./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.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_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/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_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/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_4d6cfe77-feae-4419-867b-aef561d4bdae/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 5c6d968f3bfd626cfd1fff51fa64657ab37ae457da61332877d0ea5ab7fc90f2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:45:05,436 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:45:05,499 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 15:45:05,504 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:45:05,505 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:45:05,528 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:45:05,529 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:45:05,529 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:45:05,529 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:45:05,529 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:45:05,529 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:45:05,529 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:45:05,530 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:45:05,530 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:45:05,530 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:45:05,530 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:45:05,530 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:45:05,530 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 15:45:05,530 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:45:05,530 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 15:45:05,531 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:45:05,531 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:45:05,531 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:45:05,531 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:45:05,531 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 15:45:05,531 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:45:05,531 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:45:05,531 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:45:05,531 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:45:05,531 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:45:05,531 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:45:05,532 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:45:05,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:45:05,532 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:45:05,532 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:45:05,532 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:45:05,532 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:45:05,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:45:05,532 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:45:05,532 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:45:05,532 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:45:05,532 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:45:05,532 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:45:05,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:45:05,533 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:45:05,533 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:45:05,533 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:45:05,533 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:45:05,533 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_4d6cfe77-feae-4419-867b-aef561d4bdae/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 -> 5c6d968f3bfd626cfd1fff51fa64657ab37ae457da61332877d0ea5ab7fc90f2 [2024-12-02 15:45:05,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:45:05,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:45:05,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:45:05,782 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:45:05,782 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:45:05,783 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2024-12-02 15:45:08,472 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/data/8cc76715a/2afdc90916304f3481a77dccfa285319/FLAGd3fdeb101 [2024-12-02 15:45:08,687 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:45:08,688 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2024-12-02 15:45:08,697 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/data/8cc76715a/2afdc90916304f3481a77dccfa285319/FLAGd3fdeb101 [2024-12-02 15:45:09,019 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/data/8cc76715a/2afdc90916304f3481a77dccfa285319 [2024-12-02 15:45:09,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:45:09,022 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:45:09,023 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:45:09,023 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:45:09,026 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:45:09,026 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:45:09" (1/1) ... [2024-12-02 15:45:09,027 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f790df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09, skipping insertion in model container [2024-12-02 15:45:09,027 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:45:09" (1/1) ... [2024-12-02 15:45:09,047 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:45:09,237 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_4d6cfe77-feae-4419-867b-aef561d4bdae/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c[14698,14711] [2024-12-02 15:45:09,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:45:09,248 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:45:09,302 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_4d6cfe77-feae-4419-867b-aef561d4bdae/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c[14698,14711] [2024-12-02 15:45:09,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:45:09,319 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:45:09,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09 WrapperNode [2024-12-02 15:45:09,320 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:45:09,321 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:45:09,321 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:45:09,321 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:45:09,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2024-12-02 15:45:09,340 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2024-12-02 15:45:09,371 INFO L138 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 509 [2024-12-02 15:45:09,371 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:45:09,372 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:45:09,372 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:45:09,372 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:45:09,382 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2024-12-02 15:45:09,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2024-12-02 15:45:09,386 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2024-12-02 15:45:09,402 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 15:45:09,402 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2024-12-02 15:45:09,403 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2024-12-02 15:45:09,413 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2024-12-02 15:45:09,414 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2024-12-02 15:45:09,419 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2024-12-02 15:45:09,422 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2024-12-02 15:45:09,424 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2024-12-02 15:45:09,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:45:09,428 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:45:09,428 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:45:09,428 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:45:09,429 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (1/1) ... [2024-12-02 15:45:09,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:45:09,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:09,458 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:45:09,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:45:09,484 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2024-12-02 15:45:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2024-12-02 15:45:09,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:45:09,484 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2024-12-02 15:45:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2024-12-02 15:45:09,484 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-12-02 15:45:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-12-02 15:45:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2024-12-02 15:45:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2024-12-02 15:45:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 15:45:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 15:45:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:45:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2024-12-02 15:45:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2024-12-02 15:45:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:45:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:45:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2024-12-02 15:45:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2024-12-02 15:45:09,578 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:45:09,580 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:45:10,112 INFO L? ?]: Removed 114 outVars from TransFormulas that were not future-live. [2024-12-02 15:45:10,112 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:45:10,126 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:45:10,127 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 15:45:10,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:45:10 BoogieIcfgContainer [2024-12-02 15:45:10,127 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:45:10,129 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:45:10,129 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:45:10,133 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:45:10,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:45:09" (1/3) ... [2024-12-02 15:45:10,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7986eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:45:10, skipping insertion in model container [2024-12-02 15:45:10,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:09" (2/3) ... [2024-12-02 15:45:10,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7986eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:45:10, skipping insertion in model container [2024-12-02 15:45:10,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:45:10" (3/3) ... [2024-12-02 15:45:10,135 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2024-12-02 15:45:10,146 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:45:10,149 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c that has 8 procedures, 182 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 15:45:10,200 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:45:10,211 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;@371b105, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:45:10,211 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 15:45:10,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 142 states have (on average 1.5492957746478873) internal successors, (220), 143 states have internal predecessors, (220), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-12-02 15:45:10,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-12-02 15:45:10,221 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:10,221 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] [2024-12-02 15:45:10,222 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:10,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:10,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1322673909, now seen corresponding path program 1 times [2024-12-02 15:45:10,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:10,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140048430] [2024-12-02 15:45:10,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:10,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:10,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:10,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:10,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140048430] [2024-12-02 15:45:10,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140048430] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:10,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:10,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:45:10,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009819392] [2024-12-02 15:45:10,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:10,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 15:45:10,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:10,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 15:45:10,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:45:10,467 INFO L87 Difference]: Start difference. First operand has 182 states, 142 states have (on average 1.5492957746478873) internal successors, (220), 143 states have internal predecessors, (220), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 15:45:10,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:10,506 INFO L93 Difference]: Finished difference Result 348 states and 564 transitions. [2024-12-02 15:45:10,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 15:45:10,508 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-12-02 15:45:10,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:10,515 INFO L225 Difference]: With dead ends: 348 [2024-12-02 15:45:10,516 INFO L226 Difference]: Without dead ends: 178 [2024-12-02 15:45:10,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:45:10,522 INFO L435 NwaCegarLoop]: 279 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:10,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:10,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-12-02 15:45:10,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2024-12-02 15:45:10,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 139 states have (on average 1.5323741007194245) internal successors, (213), 139 states have internal predecessors, (213), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-12-02 15:45:10,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 275 transitions. [2024-12-02 15:45:10,566 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 275 transitions. Word has length 29 [2024-12-02 15:45:10,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:10,566 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 275 transitions. [2024-12-02 15:45:10,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 15:45:10,567 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 275 transitions. [2024-12-02 15:45:10,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-12-02 15:45:10,568 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:10,568 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] [2024-12-02 15:45:10,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 15:45:10,569 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:10,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:10,570 INFO L85 PathProgramCache]: Analyzing trace with hash -482764425, now seen corresponding path program 1 times [2024-12-02 15:45:10,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:10,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355920849] [2024-12-02 15:45:10,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:10,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:10,801 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 15:45:10,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:10,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355920849] [2024-12-02 15:45:10,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355920849] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:10,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:10,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:45:10,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344422248] [2024-12-02 15:45:10,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:10,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:45:10,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:10,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:45:10,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:45:10,804 INFO L87 Difference]: Start difference. First operand 178 states and 275 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 15:45:10,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:10,920 INFO L93 Difference]: Finished difference Result 456 states and 712 transitions. [2024-12-02 15:45:10,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:45:10,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-12-02 15:45:10,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:10,924 INFO L225 Difference]: With dead ends: 456 [2024-12-02 15:45:10,924 INFO L226 Difference]: Without dead ends: 292 [2024-12-02 15:45:10,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:45:10,927 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 135 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:10,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1322 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:45:10,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-12-02 15:45:10,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 178. [2024-12-02 15:45:10,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 139 states have (on average 1.4460431654676258) internal successors, (201), 139 states have internal predecessors, (201), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-12-02 15:45:10,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 263 transitions. [2024-12-02 15:45:10,948 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 263 transitions. Word has length 29 [2024-12-02 15:45:10,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:10,948 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 263 transitions. [2024-12-02 15:45:10,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 15:45:10,948 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 263 transitions. [2024-12-02 15:45:10,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 15:45:10,949 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:10,949 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] [2024-12-02 15:45:10,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:45:10,950 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:10,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:10,950 INFO L85 PathProgramCache]: Analyzing trace with hash -757328526, now seen corresponding path program 1 times [2024-12-02 15:45:10,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:10,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058947751] [2024-12-02 15:45:10,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:10,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:11,192 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 15:45:11,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:11,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058947751] [2024-12-02 15:45:11,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058947751] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:11,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:11,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:45:11,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051487225] [2024-12-02 15:45:11,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:11,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:45:11,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:11,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:45:11,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:45:11,194 INFO L87 Difference]: Start difference. First operand 178 states and 263 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 15:45:11,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:11,272 INFO L93 Difference]: Finished difference Result 343 states and 516 transitions. [2024-12-02 15:45:11,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:45:11,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2024-12-02 15:45:11,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:11,274 INFO L225 Difference]: With dead ends: 343 [2024-12-02 15:45:11,274 INFO L226 Difference]: Without dead ends: 182 [2024-12-02 15:45:11,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:45:11,276 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 3 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:11,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 761 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:11,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-12-02 15:45:11,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-12-02 15:45:11,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 142 states have (on average 1.4366197183098592) internal successors, (204), 142 states have internal predecessors, (204), 31 states have call successors, (31), 8 states have call predecessors, (31), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-12-02 15:45:11,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 266 transitions. [2024-12-02 15:45:11,291 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 266 transitions. Word has length 40 [2024-12-02 15:45:11,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:11,291 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 266 transitions. [2024-12-02 15:45:11,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 15:45:11,292 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 266 transitions. [2024-12-02 15:45:11,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 15:45:11,293 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:11,293 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:11,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 15:45:11,293 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:11,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:11,294 INFO L85 PathProgramCache]: Analyzing trace with hash 958748420, now seen corresponding path program 1 times [2024-12-02 15:45:11,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:11,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068052520] [2024-12-02 15:45:11,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:11,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:11,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:45:11,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:11,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068052520] [2024-12-02 15:45:11,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068052520] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:11,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:11,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:45:11,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475351535] [2024-12-02 15:45:11,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:11,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:45:11,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:11,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:45:11,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:45:11,391 INFO L87 Difference]: Start difference. First operand 182 states and 266 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 15:45:11,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:11,438 INFO L93 Difference]: Finished difference Result 500 states and 741 transitions. [2024-12-02 15:45:11,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:45:11,439 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), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2024-12-02 15:45:11,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:11,442 INFO L225 Difference]: With dead ends: 500 [2024-12-02 15:45:11,442 INFO L226 Difference]: Without dead ends: 335 [2024-12-02 15:45:11,443 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 15:45:11,444 INFO L435 NwaCegarLoop]: 274 mSDtfsCounter, 214 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 528 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 15:45:11,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 528 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:11,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-12-02 15:45:11,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 328. [2024-12-02 15:45:11,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 251 states have (on average 1.4581673306772909) internal successors, (366), 252 states have internal predecessors, (366), 60 states have call successors, (60), 16 states have call predecessors, (60), 16 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 15:45:11,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 486 transitions. [2024-12-02 15:45:11,473 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 486 transitions. Word has length 56 [2024-12-02 15:45:11,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:11,474 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 486 transitions. [2024-12-02 15:45:11,474 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), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 15:45:11,474 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 486 transitions. [2024-12-02 15:45:11,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 15:45:11,476 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:11,476 INFO L218 NwaCegarLoop]: trace histogram [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 15:45:11,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 15:45:11,476 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:11,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:11,477 INFO L85 PathProgramCache]: Analyzing trace with hash -261203095, now seen corresponding path program 1 times [2024-12-02 15:45:11,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:11,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307047037] [2024-12-02 15:45:11,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:11,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:11,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:45:11,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:11,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307047037] [2024-12-02 15:45:11,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307047037] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:11,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:11,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:45:11,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924718477] [2024-12-02 15:45:11,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:11,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:45:11,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:11,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:45:11,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:45:11,569 INFO L87 Difference]: Start difference. First operand 328 states and 486 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 15:45:11,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:11,630 INFO L93 Difference]: Finished difference Result 923 states and 1379 transitions. [2024-12-02 15:45:11,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:45:11,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2024-12-02 15:45:11,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:11,638 INFO L225 Difference]: With dead ends: 923 [2024-12-02 15:45:11,638 INFO L226 Difference]: Without dead ends: 612 [2024-12-02 15:45:11,640 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 15:45:11,640 INFO L435 NwaCegarLoop]: 294 mSDtfsCounter, 216 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 550 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 15:45:11,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 550 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:11,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2024-12-02 15:45:11,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 606. [2024-12-02 15:45:11,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 457 states have (on average 1.4682713347921226) internal successors, (671), 460 states have internal predecessors, (671), 117 states have call successors, (117), 31 states have call predecessors, (117), 31 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-12-02 15:45:11,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 905 transitions. [2024-12-02 15:45:11,699 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 905 transitions. Word has length 57 [2024-12-02 15:45:11,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:11,700 INFO L471 AbstractCegarLoop]: Abstraction has 606 states and 905 transitions. [2024-12-02 15:45:11,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 15:45:11,700 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 905 transitions. [2024-12-02 15:45:11,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 15:45:11,702 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:11,702 INFO L218 NwaCegarLoop]: trace histogram [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 15:45:11,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 15:45:11,702 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:11,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:11,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1541066773, now seen corresponding path program 1 times [2024-12-02 15:45:11,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:11,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943534135] [2024-12-02 15:45:11,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:11,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:11,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:45:11,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:11,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943534135] [2024-12-02 15:45:11,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943534135] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:11,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:11,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:45:11,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550615653] [2024-12-02 15:45:11,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:11,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:45:11,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:11,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:45:11,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:45:11,891 INFO L87 Difference]: Start difference. First operand 606 states and 905 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 15:45:12,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:12,138 INFO L93 Difference]: Finished difference Result 1300 states and 1937 transitions. [2024-12-02 15:45:12,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:45:12,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2024-12-02 15:45:12,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:12,144 INFO L225 Difference]: With dead ends: 1300 [2024-12-02 15:45:12,144 INFO L226 Difference]: Without dead ends: 711 [2024-12-02 15:45:12,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:45:12,147 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 371 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:12,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 675 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:45:12,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2024-12-02 15:45:12,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 695. [2024-12-02 15:45:12,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 533 states have (on average 1.452157598499062) internal successors, (774), 536 states have internal predecessors, (774), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-12-02 15:45:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1022 transitions. [2024-12-02 15:45:12,222 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1022 transitions. Word has length 57 [2024-12-02 15:45:12,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:12,222 INFO L471 AbstractCegarLoop]: Abstraction has 695 states and 1022 transitions. [2024-12-02 15:45:12,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 15:45:12,222 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1022 transitions. [2024-12-02 15:45:12,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 15:45:12,224 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:12,224 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 15:45:12,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 15:45:12,224 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:12,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:12,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1635374083, now seen corresponding path program 1 times [2024-12-02 15:45:12,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:12,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222943098] [2024-12-02 15:45:12,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:12,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:12,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:45:12,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:12,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222943098] [2024-12-02 15:45:12,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222943098] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:12,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:12,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:45:12,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142901109] [2024-12-02 15:45:12,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:12,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:45:12,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:12,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:45:12,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:45:12,416 INFO L87 Difference]: Start difference. First operand 695 states and 1022 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 15:45:12,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:12,634 INFO L93 Difference]: Finished difference Result 1304 states and 1937 transitions. [2024-12-02 15:45:12,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:45:12,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2024-12-02 15:45:12,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:12,640 INFO L225 Difference]: With dead ends: 1304 [2024-12-02 15:45:12,640 INFO L226 Difference]: Without dead ends: 715 [2024-12-02 15:45:12,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:45:12,643 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 371 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:12,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 675 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:45:12,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2024-12-02 15:45:12,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 703. [2024-12-02 15:45:12,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 541 states have (on average 1.44547134935305) internal successors, (782), 544 states have internal predecessors, (782), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-12-02 15:45:12,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1030 transitions. [2024-12-02 15:45:12,716 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1030 transitions. Word has length 58 [2024-12-02 15:45:12,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:12,716 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 1030 transitions. [2024-12-02 15:45:12,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 15:45:12,716 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1030 transitions. [2024-12-02 15:45:12,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 15:45:12,717 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:12,718 INFO L218 NwaCegarLoop]: trace histogram [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 15:45:12,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 15:45:12,718 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:12,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:12,718 INFO L85 PathProgramCache]: Analyzing trace with hash 852896981, now seen corresponding path program 1 times [2024-12-02 15:45:12,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:12,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640865027] [2024-12-02 15:45:12,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:12,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:12,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:45:12,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:12,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640865027] [2024-12-02 15:45:12,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640865027] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:12,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:12,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:45:12,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467560381] [2024-12-02 15:45:12,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:12,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:45:12,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:12,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:45:12,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:45:12,895 INFO L87 Difference]: Start difference. First operand 703 states and 1030 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 15:45:13,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:13,058 INFO L93 Difference]: Finished difference Result 1292 states and 1917 transitions. [2024-12-02 15:45:13,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:45:13,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2024-12-02 15:45:13,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:13,062 INFO L225 Difference]: With dead ends: 1292 [2024-12-02 15:45:13,062 INFO L226 Difference]: Without dead ends: 703 [2024-12-02 15:45:13,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:45:13,064 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 61 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:13,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 669 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:45:13,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2024-12-02 15:45:13,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 703. [2024-12-02 15:45:13,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 541 states have (on average 1.4380776340110906) internal successors, (778), 544 states have internal predecessors, (778), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-12-02 15:45:13,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1026 transitions. [2024-12-02 15:45:13,110 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1026 transitions. Word has length 60 [2024-12-02 15:45:13,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:13,111 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 1026 transitions. [2024-12-02 15:45:13,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 15:45:13,111 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1026 transitions. [2024-12-02 15:45:13,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-12-02 15:45:13,112 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:13,112 INFO L218 NwaCegarLoop]: trace histogram [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 15:45:13,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 15:45:13,112 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:13,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:13,113 INFO L85 PathProgramCache]: Analyzing trace with hash 316098937, now seen corresponding path program 1 times [2024-12-02 15:45:13,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:13,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765154940] [2024-12-02 15:45:13,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:13,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:13,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:45:13,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:13,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765154940] [2024-12-02 15:45:13,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765154940] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:13,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:13,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:45:13,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151211556] [2024-12-02 15:45:13,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:13,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:45:13,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:13,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:45:13,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:45:13,259 INFO L87 Difference]: Start difference. First operand 703 states and 1026 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 15:45:13,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:13,313 INFO L93 Difference]: Finished difference Result 1312 states and 1941 transitions. [2024-12-02 15:45:13,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:45:13,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 61 [2024-12-02 15:45:13,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:13,318 INFO L225 Difference]: With dead ends: 1312 [2024-12-02 15:45:13,318 INFO L226 Difference]: Without dead ends: 723 [2024-12-02 15:45:13,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:45:13,320 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 4 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:13,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 773 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:13,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2024-12-02 15:45:13,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2024-12-02 15:45:13,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 557 states have (on average 1.4254937163375225) internal successors, (794), 560 states have internal predecessors, (794), 124 states have call successors, (124), 41 states have call predecessors, (124), 41 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-12-02 15:45:13,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1042 transitions. [2024-12-02 15:45:13,353 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1042 transitions. Word has length 61 [2024-12-02 15:45:13,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:13,354 INFO L471 AbstractCegarLoop]: Abstraction has 723 states and 1042 transitions. [2024-12-02 15:45:13,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 15:45:13,354 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1042 transitions. [2024-12-02 15:45:13,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 15:45:13,355 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:13,355 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:13,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 15:45:13,355 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:13,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:13,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1317892801, now seen corresponding path program 1 times [2024-12-02 15:45:13,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:13,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247425470] [2024-12-02 15:45:13,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:13,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:45:13,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:13,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247425470] [2024-12-02 15:45:13,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247425470] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:13,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:13,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:45:13,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190060722] [2024-12-02 15:45:13,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:13,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:45:13,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:13,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:45:13,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:45:13,477 INFO L87 Difference]: Start difference. First operand 723 states and 1042 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 15:45:13,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:13,544 INFO L93 Difference]: Finished difference Result 1352 states and 1985 transitions. [2024-12-02 15:45:13,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:45:13,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 69 [2024-12-02 15:45:13,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:13,548 INFO L225 Difference]: With dead ends: 1352 [2024-12-02 15:45:13,548 INFO L226 Difference]: Without dead ends: 743 [2024-12-02 15:45:13,549 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:45:13,550 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 4 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:13,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 759 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:13,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2024-12-02 15:45:13,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 743. [2024-12-02 15:45:13,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 573 states have (on average 1.4136125654450262) internal successors, (810), 576 states have internal predecessors, (810), 124 states have call successors, (124), 45 states have call predecessors, (124), 45 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-12-02 15:45:13,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1058 transitions. [2024-12-02 15:45:13,588 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1058 transitions. Word has length 69 [2024-12-02 15:45:13,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:13,589 INFO L471 AbstractCegarLoop]: Abstraction has 743 states and 1058 transitions. [2024-12-02 15:45:13,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 15:45:13,589 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1058 transitions. [2024-12-02 15:45:13,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 15:45:13,590 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:13,590 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:13,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 15:45:13,590 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:13,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:13,591 INFO L85 PathProgramCache]: Analyzing trace with hash -501943895, now seen corresponding path program 1 times [2024-12-02 15:45:13,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:13,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77812272] [2024-12-02 15:45:13,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:13,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:13,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:45:13,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:13,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77812272] [2024-12-02 15:45:13,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77812272] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:13,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:13,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:45:13,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688238074] [2024-12-02 15:45:13,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:13,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:45:13,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:13,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:45:13,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:45:13,716 INFO L87 Difference]: Start difference. First operand 743 states and 1058 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-12-02 15:45:13,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:13,776 INFO L93 Difference]: Finished difference Result 1388 states and 2001 transitions. [2024-12-02 15:45:13,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:45:13,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 77 [2024-12-02 15:45:13,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:13,780 INFO L225 Difference]: With dead ends: 1388 [2024-12-02 15:45:13,780 INFO L226 Difference]: Without dead ends: 759 [2024-12-02 15:45:13,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:45:13,782 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 3 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:13,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 769 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:13,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2024-12-02 15:45:13,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 759. [2024-12-02 15:45:13,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 585 states have (on average 1.405128205128205) internal successors, (822), 588 states have internal predecessors, (822), 124 states have call successors, (124), 49 states have call predecessors, (124), 49 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-12-02 15:45:13,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1070 transitions. [2024-12-02 15:45:13,817 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1070 transitions. Word has length 77 [2024-12-02 15:45:13,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:13,817 INFO L471 AbstractCegarLoop]: Abstraction has 759 states and 1070 transitions. [2024-12-02 15:45:13,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-12-02 15:45:13,817 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1070 transitions. [2024-12-02 15:45:13,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 15:45:13,818 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:13,818 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:13,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 15:45:13,819 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:13,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:13,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1894515408, now seen corresponding path program 1 times [2024-12-02 15:45:13,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:13,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332121351] [2024-12-02 15:45:13,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:13,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:13,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:45:13,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:13,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332121351] [2024-12-02 15:45:13,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332121351] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:13,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:13,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:45:13,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916972362] [2024-12-02 15:45:13,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:13,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:45:13,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:13,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:45:13,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:45:13,941 INFO L87 Difference]: Start difference. First operand 759 states and 1070 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-12-02 15:45:14,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:14,022 INFO L93 Difference]: Finished difference Result 1424 states and 2041 transitions. [2024-12-02 15:45:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:45:14,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 77 [2024-12-02 15:45:14,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:14,029 INFO L225 Difference]: With dead ends: 1424 [2024-12-02 15:45:14,029 INFO L226 Difference]: Without dead ends: 779 [2024-12-02 15:45:14,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:45:14,032 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 4 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:14,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 759 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:14,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2024-12-02 15:45:14,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 779. [2024-12-02 15:45:14,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 601 states have (on average 1.394342762063228) internal successors, (838), 604 states have internal predecessors, (838), 124 states have call successors, (124), 53 states have call predecessors, (124), 53 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-12-02 15:45:14,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1086 transitions. [2024-12-02 15:45:14,064 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1086 transitions. Word has length 77 [2024-12-02 15:45:14,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:14,064 INFO L471 AbstractCegarLoop]: Abstraction has 779 states and 1086 transitions. [2024-12-02 15:45:14,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-12-02 15:45:14,064 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1086 transitions. [2024-12-02 15:45:14,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-12-02 15:45:14,066 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:14,066 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:14,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 15:45:14,066 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:14,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:14,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1393000016, now seen corresponding path program 1 times [2024-12-02 15:45:14,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:14,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846107154] [2024-12-02 15:45:14,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:14,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:14,227 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 15:45:14,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:14,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846107154] [2024-12-02 15:45:14,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846107154] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:14,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:14,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:45:14,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698353229] [2024-12-02 15:45:14,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:14,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:45:14,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:14,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:45:14,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:45:14,229 INFO L87 Difference]: Start difference. First operand 779 states and 1086 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-12-02 15:45:14,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:14,309 INFO L93 Difference]: Finished difference Result 1468 states and 2069 transitions. [2024-12-02 15:45:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:45:14,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 85 [2024-12-02 15:45:14,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:14,314 INFO L225 Difference]: With dead ends: 1468 [2024-12-02 15:45:14,314 INFO L226 Difference]: Without dead ends: 803 [2024-12-02 15:45:14,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:45:14,317 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 5 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:14,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 771 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:14,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2024-12-02 15:45:14,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2024-12-02 15:45:14,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 621 states have (on average 1.3816425120772946) internal successors, (858), 624 states have internal predecessors, (858), 124 states have call successors, (124), 57 states have call predecessors, (124), 57 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-12-02 15:45:14,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1106 transitions. [2024-12-02 15:45:14,372 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1106 transitions. Word has length 85 [2024-12-02 15:45:14,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:14,373 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1106 transitions. [2024-12-02 15:45:14,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-12-02 15:45:14,373 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1106 transitions. [2024-12-02 15:45:14,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-12-02 15:45:14,375 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:14,375 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:14,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 15:45:14,375 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:14,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:14,376 INFO L85 PathProgramCache]: Analyzing trace with hash -557210378, now seen corresponding path program 1 times [2024-12-02 15:45:14,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:14,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771012608] [2024-12-02 15:45:14,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:14,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:14,957 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:45:14,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:14,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771012608] [2024-12-02 15:45:14,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771012608] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:14,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:14,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 15:45:14,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063604432] [2024-12-02 15:45:14,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:14,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 15:45:14,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:14,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 15:45:14,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:45:14,958 INFO L87 Difference]: Start difference. First operand 803 states and 1106 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 15:45:15,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:15,229 INFO L93 Difference]: Finished difference Result 2066 states and 2836 transitions. [2024-12-02 15:45:15,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:45:15,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 88 [2024-12-02 15:45:15,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:15,234 INFO L225 Difference]: With dead ends: 2066 [2024-12-02 15:45:15,234 INFO L226 Difference]: Without dead ends: 1377 [2024-12-02 15:45:15,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-12-02 15:45:15,236 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 212 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:15,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1455 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:45:15,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2024-12-02 15:45:15,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1087. [2024-12-02 15:45:15,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 832 states have (on average 1.3701923076923077) internal successors, (1140), 837 states have internal predecessors, (1140), 172 states have call successors, (172), 82 states have call predecessors, (172), 82 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2024-12-02 15:45:15,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1484 transitions. [2024-12-02 15:45:15,291 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1484 transitions. Word has length 88 [2024-12-02 15:45:15,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:15,292 INFO L471 AbstractCegarLoop]: Abstraction has 1087 states and 1484 transitions. [2024-12-02 15:45:15,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 15:45:15,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1484 transitions. [2024-12-02 15:45:15,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 15:45:15,293 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:15,293 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, 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 15:45:15,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 15:45:15,293 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:15,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:15,294 INFO L85 PathProgramCache]: Analyzing trace with hash 67909963, now seen corresponding path program 1 times [2024-12-02 15:45:15,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:15,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493151325] [2024-12-02 15:45:15,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:15,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:15,401 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:45:15,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:15,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493151325] [2024-12-02 15:45:15,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493151325] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:15,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:15,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:45:15,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178446502] [2024-12-02 15:45:15,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:15,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:45:15,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:15,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:45:15,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:45:15,403 INFO L87 Difference]: Start difference. First operand 1087 states and 1484 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-12-02 15:45:15,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:15,472 INFO L93 Difference]: Finished difference Result 2016 states and 2777 transitions. [2024-12-02 15:45:15,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:45:15,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 92 [2024-12-02 15:45:15,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:15,478 INFO L225 Difference]: With dead ends: 2016 [2024-12-02 15:45:15,478 INFO L226 Difference]: Without dead ends: 1111 [2024-12-02 15:45:15,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:45:15,481 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 3 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:15,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 769 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:15,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2024-12-02 15:45:15,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1111. [2024-12-02 15:45:15,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 850 states have (on average 1.3623529411764705) internal successors, (1158), 855 states have internal predecessors, (1158), 172 states have call successors, (172), 88 states have call predecessors, (172), 88 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2024-12-02 15:45:15,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1502 transitions. [2024-12-02 15:45:15,536 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1502 transitions. Word has length 92 [2024-12-02 15:45:15,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:15,536 INFO L471 AbstractCegarLoop]: Abstraction has 1111 states and 1502 transitions. [2024-12-02 15:45:15,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-12-02 15:45:15,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1502 transitions. [2024-12-02 15:45:15,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 15:45:15,537 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:15,537 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:15,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 15:45:15,537 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:15,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:15,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1748531319, now seen corresponding path program 1 times [2024-12-02 15:45:15,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:15,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032923084] [2024-12-02 15:45:15,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:15,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:15,859 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 15:45:15,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:15,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032923084] [2024-12-02 15:45:15,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032923084] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:15,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826447588] [2024-12-02 15:45:15,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:15,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:15,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:15,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:15,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 15:45:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:16,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 15:45:16,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:16,155 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 15:45:16,155 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:45:16,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826447588] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:16,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:45:16,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-12-02 15:45:16,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195060826] [2024-12-02 15:45:16,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:16,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 15:45:16,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:16,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 15:45:16,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:45:16,157 INFO L87 Difference]: Start difference. First operand 1111 states and 1502 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-12-02 15:45:16,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:16,357 INFO L93 Difference]: Finished difference Result 2384 states and 3348 transitions. [2024-12-02 15:45:16,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 15:45:16,357 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 91 [2024-12-02 15:45:16,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:16,363 INFO L225 Difference]: With dead ends: 2384 [2024-12-02 15:45:16,363 INFO L226 Difference]: Without dead ends: 1543 [2024-12-02 15:45:16,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-12-02 15:45:16,366 INFO L435 NwaCegarLoop]: 442 mSDtfsCounter, 141 mSDsluCounter, 2450 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:16,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 2892 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:45:16,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2024-12-02 15:45:16,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1119. [2024-12-02 15:45:16,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 854 states have (on average 1.3536299765807962) internal successors, (1156), 861 states have internal predecessors, (1156), 174 states have call successors, (174), 90 states have call predecessors, (174), 90 states have return successors, (174), 167 states have call predecessors, (174), 174 states have call successors, (174) [2024-12-02 15:45:16,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1504 transitions. [2024-12-02 15:45:16,427 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1504 transitions. Word has length 91 [2024-12-02 15:45:16,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:16,428 INFO L471 AbstractCegarLoop]: Abstraction has 1119 states and 1504 transitions. [2024-12-02 15:45:16,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-12-02 15:45:16,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1504 transitions. [2024-12-02 15:45:16,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 15:45:16,429 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:16,429 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:16,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 15:45:16,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 15:45:16,629 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:16,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:16,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1775559546, now seen corresponding path program 1 times [2024-12-02 15:45:16,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:16,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403939489] [2024-12-02 15:45:16,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:16,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:16,776 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 15:45:16,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:16,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403939489] [2024-12-02 15:45:16,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403939489] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:16,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:16,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 15:45:16,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866208598] [2024-12-02 15:45:16,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:16,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 15:45:16,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:16,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 15:45:16,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:45:16,778 INFO L87 Difference]: Start difference. First operand 1119 states and 1504 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 15:45:16,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:16,997 INFO L93 Difference]: Finished difference Result 2023 states and 2729 transitions. [2024-12-02 15:45:16,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:45:16,998 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 94 [2024-12-02 15:45:16,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:17,003 INFO L225 Difference]: With dead ends: 2023 [2024-12-02 15:45:17,003 INFO L226 Difference]: Without dead ends: 1168 [2024-12-02 15:45:17,004 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-12-02 15:45:17,005 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 258 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:17,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 1497 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:45:17,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2024-12-02 15:45:17,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1126. [2024-12-02 15:45:17,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 872 states have (on average 1.3451834862385321) internal successors, (1173), 884 states have internal predecessors, (1173), 162 states have call successors, (162), 91 states have call predecessors, (162), 91 states have return successors, (162), 150 states have call predecessors, (162), 162 states have call successors, (162) [2024-12-02 15:45:17,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1497 transitions. [2024-12-02 15:45:17,061 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1497 transitions. Word has length 94 [2024-12-02 15:45:17,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:17,061 INFO L471 AbstractCegarLoop]: Abstraction has 1126 states and 1497 transitions. [2024-12-02 15:45:17,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 15:45:17,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1497 transitions. [2024-12-02 15:45:17,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 15:45:17,062 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:17,063 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:17,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 15:45:17,063 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:17,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:17,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1057916828, now seen corresponding path program 1 times [2024-12-02 15:45:17,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:17,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335406204] [2024-12-02 15:45:17,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:17,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:17,442 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 15:45:17,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:17,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335406204] [2024-12-02 15:45:17,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335406204] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:17,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:17,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 15:45:17,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236883027] [2024-12-02 15:45:17,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:17,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 15:45:17,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:17,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 15:45:17,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:45:17,444 INFO L87 Difference]: Start difference. First operand 1126 states and 1497 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 15:45:17,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:17,695 INFO L93 Difference]: Finished difference Result 2006 states and 2678 transitions. [2024-12-02 15:45:17,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:45:17,696 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 96 [2024-12-02 15:45:17,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:17,702 INFO L225 Difference]: With dead ends: 2006 [2024-12-02 15:45:17,702 INFO L226 Difference]: Without dead ends: 1124 [2024-12-02 15:45:17,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-12-02 15:45:17,705 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 152 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:17,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1617 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:45:17,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2024-12-02 15:45:17,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1015. [2024-12-02 15:45:17,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 788 states have (on average 1.3477157360406091) internal successors, (1062), 798 states have internal predecessors, (1062), 145 states have call successors, (145), 81 states have call predecessors, (145), 81 states have return successors, (145), 135 states have call predecessors, (145), 145 states have call successors, (145) [2024-12-02 15:45:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1352 transitions. [2024-12-02 15:45:17,790 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1352 transitions. Word has length 96 [2024-12-02 15:45:17,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:17,791 INFO L471 AbstractCegarLoop]: Abstraction has 1015 states and 1352 transitions. [2024-12-02 15:45:17,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 15:45:17,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1352 transitions. [2024-12-02 15:45:17,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 15:45:17,792 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:17,792 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, 1, 1, 1, 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 15:45:17,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 15:45:17,792 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:17,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:17,793 INFO L85 PathProgramCache]: Analyzing trace with hash 272118471, now seen corresponding path program 1 times [2024-12-02 15:45:17,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:17,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81965803] [2024-12-02 15:45:17,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:17,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:18,306 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 15:45:18,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:18,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81965803] [2024-12-02 15:45:18,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81965803] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:18,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:18,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 15:45:18,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379061587] [2024-12-02 15:45:18,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:18,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 15:45:18,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:18,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 15:45:18,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:45:18,308 INFO L87 Difference]: Start difference. First operand 1015 states and 1352 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 15:45:18,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:18,723 INFO L93 Difference]: Finished difference Result 1939 states and 2567 transitions. [2024-12-02 15:45:18,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:45:18,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 97 [2024-12-02 15:45:18,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:18,728 INFO L225 Difference]: With dead ends: 1939 [2024-12-02 15:45:18,728 INFO L226 Difference]: Without dead ends: 1088 [2024-12-02 15:45:18,730 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-12-02 15:45:18,730 INFO L435 NwaCegarLoop]: 286 mSDtfsCounter, 413 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:18,730 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1286 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:45:18,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2024-12-02 15:45:18,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 1031. [2024-12-02 15:45:18,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 796 states have (on average 1.3253768844221105) internal successors, (1055), 807 states have internal predecessors, (1055), 148 states have call successors, (148), 86 states have call predecessors, (148), 86 states have return successors, (148), 137 states have call predecessors, (148), 148 states have call successors, (148) [2024-12-02 15:45:18,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1351 transitions. [2024-12-02 15:45:18,787 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1351 transitions. Word has length 97 [2024-12-02 15:45:18,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:18,787 INFO L471 AbstractCegarLoop]: Abstraction has 1031 states and 1351 transitions. [2024-12-02 15:45:18,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 15:45:18,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1351 transitions. [2024-12-02 15:45:18,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-12-02 15:45:18,788 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:18,788 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, 1, 1, 1, 1, 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 15:45:18,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 15:45:18,788 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:18,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:18,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1488358529, now seen corresponding path program 1 times [2024-12-02 15:45:18,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:18,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213782541] [2024-12-02 15:45:18,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:18,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:18,855 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 15:45:18,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:18,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213782541] [2024-12-02 15:45:18,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213782541] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:18,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:18,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:45:18,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598323610] [2024-12-02 15:45:18,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:18,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:45:18,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:18,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:45:18,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:45:18,857 INFO L87 Difference]: Start difference. First operand 1031 states and 1351 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 15:45:19,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:19,014 INFO L93 Difference]: Finished difference Result 2712 states and 3577 transitions. [2024-12-02 15:45:19,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:45:19,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 98 [2024-12-02 15:45:19,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:19,022 INFO L225 Difference]: With dead ends: 2712 [2024-12-02 15:45:19,022 INFO L226 Difference]: Without dead ends: 1896 [2024-12-02 15:45:19,024 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:45:19,024 INFO L435 NwaCegarLoop]: 472 mSDtfsCounter, 203 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:19,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 1177 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:19,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2024-12-02 15:45:19,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1777. [2024-12-02 15:45:19,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1352 states have (on average 1.3187869822485208) internal successors, (1783), 1371 states have internal predecessors, (1783), 272 states have call successors, (272), 152 states have call predecessors, (272), 152 states have return successors, (272), 253 states have call predecessors, (272), 272 states have call successors, (272) [2024-12-02 15:45:19,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2327 transitions. [2024-12-02 15:45:19,182 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2327 transitions. Word has length 98 [2024-12-02 15:45:19,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:19,182 INFO L471 AbstractCegarLoop]: Abstraction has 1777 states and 2327 transitions. [2024-12-02 15:45:19,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 15:45:19,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2327 transitions. [2024-12-02 15:45:19,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-02 15:45:19,184 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:19,184 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, 1, 1, 1, 1, 1, 1, 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 15:45:19,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 15:45:19,184 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:19,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:19,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1415758364, now seen corresponding path program 1 times [2024-12-02 15:45:19,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:19,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110137110] [2024-12-02 15:45:19,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:19,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:19,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 15:45:19,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:19,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110137110] [2024-12-02 15:45:19,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110137110] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:19,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:19,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:45:19,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273392245] [2024-12-02 15:45:19,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:19,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:45:19,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:19,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:45:19,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:45:19,278 INFO L87 Difference]: Start difference. First operand 1777 states and 2327 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 15:45:19,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:19,464 INFO L93 Difference]: Finished difference Result 4116 states and 5418 transitions. [2024-12-02 15:45:19,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:45:19,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 100 [2024-12-02 15:45:19,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:19,474 INFO L225 Difference]: With dead ends: 4116 [2024-12-02 15:45:19,474 INFO L226 Difference]: Without dead ends: 2641 [2024-12-02 15:45:19,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:45:19,477 INFO L435 NwaCegarLoop]: 490 mSDtfsCounter, 204 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:19,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 1211 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:19,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2024-12-02 15:45:19,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 2520. [2024-12-02 15:45:19,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2520 states, 1905 states have (on average 1.3133858267716536) internal successors, (2502), 1932 states have internal predecessors, (2502), 396 states have call successors, (396), 218 states have call predecessors, (396), 218 states have return successors, (396), 369 states have call predecessors, (396), 396 states have call successors, (396) [2024-12-02 15:45:19,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2520 states to 2520 states and 3294 transitions. [2024-12-02 15:45:19,655 INFO L78 Accepts]: Start accepts. Automaton has 2520 states and 3294 transitions. Word has length 100 [2024-12-02 15:45:19,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:19,655 INFO L471 AbstractCegarLoop]: Abstraction has 2520 states and 3294 transitions. [2024-12-02 15:45:19,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 15:45:19,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2520 states and 3294 transitions. [2024-12-02 15:45:19,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-02 15:45:19,657 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:19,657 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, 1, 1, 1, 1, 1, 1, 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 15:45:19,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 15:45:19,657 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:19,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:19,658 INFO L85 PathProgramCache]: Analyzing trace with hash 534410324, now seen corresponding path program 1 times [2024-12-02 15:45:19,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:19,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700124739] [2024-12-02 15:45:19,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:19,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:20,041 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 15:45:20,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:20,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700124739] [2024-12-02 15:45:20,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700124739] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:20,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:20,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 15:45:20,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505767702] [2024-12-02 15:45:20,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:20,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 15:45:20,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:20,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 15:45:20,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:45:20,042 INFO L87 Difference]: Start difference. First operand 2520 states and 3294 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 15:45:20,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:20,676 INFO L93 Difference]: Finished difference Result 4901 states and 6409 transitions. [2024-12-02 15:45:20,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:45:20,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 100 [2024-12-02 15:45:20,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:20,691 INFO L225 Difference]: With dead ends: 4901 [2024-12-02 15:45:20,691 INFO L226 Difference]: Without dead ends: 2778 [2024-12-02 15:45:20,697 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-12-02 15:45:20,698 INFO L435 NwaCegarLoop]: 326 mSDtfsCounter, 423 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:20,699 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 1496 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:45:20,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2024-12-02 15:45:20,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 2527. [2024-12-02 15:45:20,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2527 states, 1901 states have (on average 1.3119410836401895) internal successors, (2494), 1929 states have internal predecessors, (2494), 403 states have call successors, (403), 222 states have call predecessors, (403), 222 states have return successors, (403), 375 states have call predecessors, (403), 403 states have call successors, (403) [2024-12-02 15:45:20,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2527 states to 2527 states and 3300 transitions. [2024-12-02 15:45:20,992 INFO L78 Accepts]: Start accepts. Automaton has 2527 states and 3300 transitions. Word has length 100 [2024-12-02 15:45:20,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:20,992 INFO L471 AbstractCegarLoop]: Abstraction has 2527 states and 3300 transitions. [2024-12-02 15:45:20,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 15:45:20,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2527 states and 3300 transitions. [2024-12-02 15:45:20,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 15:45:20,994 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:20,994 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:20,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 15:45:20,995 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:20,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:20,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1472031769, now seen corresponding path program 1 times [2024-12-02 15:45:20,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:20,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509496528] [2024-12-02 15:45:20,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:20,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:21,092 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 15:45:21,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:21,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509496528] [2024-12-02 15:45:21,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509496528] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:21,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:21,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:45:21,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694406775] [2024-12-02 15:45:21,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:21,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:45:21,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:21,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:45:21,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:45:21,094 INFO L87 Difference]: Start difference. First operand 2527 states and 3300 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 15:45:21,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:21,559 INFO L93 Difference]: Finished difference Result 6470 states and 8489 transitions. [2024-12-02 15:45:21,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:45:21,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2024-12-02 15:45:21,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:21,581 INFO L225 Difference]: With dead ends: 6470 [2024-12-02 15:45:21,582 INFO L226 Difference]: Without dead ends: 4385 [2024-12-02 15:45:21,587 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:45:21,588 INFO L435 NwaCegarLoop]: 479 mSDtfsCounter, 208 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:21,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 1197 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:45:21,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4385 states. [2024-12-02 15:45:22,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4385 to 4041. [2024-12-02 15:45:22,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4041 states, 3004 states have (on average 1.3005992010652463) internal successors, (3907), 3048 states have internal predecessors, (3907), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2024-12-02 15:45:22,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4041 states to 4041 states and 5251 transitions. [2024-12-02 15:45:22,213 INFO L78 Accepts]: Start accepts. Automaton has 4041 states and 5251 transitions. Word has length 102 [2024-12-02 15:45:22,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:22,214 INFO L471 AbstractCegarLoop]: Abstraction has 4041 states and 5251 transitions. [2024-12-02 15:45:22,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 15:45:22,214 INFO L276 IsEmpty]: Start isEmpty. Operand 4041 states and 5251 transitions. [2024-12-02 15:45:22,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 15:45:22,216 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:22,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:22,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 15:45:22,217 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:22,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:22,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1614875897, now seen corresponding path program 1 times [2024-12-02 15:45:22,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:22,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422281960] [2024-12-02 15:45:22,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:22,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:22,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 15:45:22,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:22,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422281960] [2024-12-02 15:45:22,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422281960] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:22,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:22,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:45:22,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649502131] [2024-12-02 15:45:22,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:22,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:45:22,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:22,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:45:22,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:45:22,278 INFO L87 Difference]: Start difference. First operand 4041 states and 5251 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 15:45:22,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:22,710 INFO L93 Difference]: Finished difference Result 7760 states and 10132 transitions. [2024-12-02 15:45:22,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:45:22,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 103 [2024-12-02 15:45:22,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:22,731 INFO L225 Difference]: With dead ends: 7760 [2024-12-02 15:45:22,731 INFO L226 Difference]: Without dead ends: 4074 [2024-12-02 15:45:22,738 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 15:45:22,739 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 6 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:22,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 491 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:22,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4074 states. [2024-12-02 15:45:23,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4074 to 4047. [2024-12-02 15:45:23,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4047 states, 3010 states have (on average 1.3) internal successors, (3913), 3054 states have internal predecessors, (3913), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2024-12-02 15:45:23,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4047 states to 4047 states and 5257 transitions. [2024-12-02 15:45:23,177 INFO L78 Accepts]: Start accepts. Automaton has 4047 states and 5257 transitions. Word has length 103 [2024-12-02 15:45:23,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:23,177 INFO L471 AbstractCegarLoop]: Abstraction has 4047 states and 5257 transitions. [2024-12-02 15:45:23,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 15:45:23,177 INFO L276 IsEmpty]: Start isEmpty. Operand 4047 states and 5257 transitions. [2024-12-02 15:45:23,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 15:45:23,180 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:23,180 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:23,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 15:45:23,180 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:23,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:23,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1907577092, now seen corresponding path program 1 times [2024-12-02 15:45:23,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:23,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097408889] [2024-12-02 15:45:23,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:23,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:23,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 15:45:23,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:23,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097408889] [2024-12-02 15:45:23,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097408889] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:23,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:23,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:45:23,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534641434] [2024-12-02 15:45:23,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:23,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:45:23,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:23,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:45:23,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:45:23,359 INFO L87 Difference]: Start difference. First operand 4047 states and 5257 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 15:45:23,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:23,721 INFO L93 Difference]: Finished difference Result 7725 states and 10059 transitions. [2024-12-02 15:45:23,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:45:23,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2024-12-02 15:45:23,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:23,744 INFO L225 Difference]: With dead ends: 7725 [2024-12-02 15:45:23,744 INFO L226 Difference]: Without dead ends: 3755 [2024-12-02 15:45:23,753 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:45:23,754 INFO L435 NwaCegarLoop]: 268 mSDtfsCounter, 83 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:23,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 752 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:23,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3755 states. [2024-12-02 15:45:24,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3755 to 3692. [2024-12-02 15:45:24,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3692 states, 2738 states have (on average 1.3093498904309715) internal successors, (3585), 2772 states have internal predecessors, (3585), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2024-12-02 15:45:24,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3692 states to 3692 states and 4825 transitions. [2024-12-02 15:45:24,135 INFO L78 Accepts]: Start accepts. Automaton has 3692 states and 4825 transitions. Word has length 104 [2024-12-02 15:45:24,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:24,136 INFO L471 AbstractCegarLoop]: Abstraction has 3692 states and 4825 transitions. [2024-12-02 15:45:24,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 15:45:24,136 INFO L276 IsEmpty]: Start isEmpty. Operand 3692 states and 4825 transitions. [2024-12-02 15:45:24,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 15:45:24,137 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:24,138 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:24,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 15:45:24,138 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:24,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:24,138 INFO L85 PathProgramCache]: Analyzing trace with hash 540150455, now seen corresponding path program 1 times [2024-12-02 15:45:24,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:24,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761772992] [2024-12-02 15:45:24,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:24,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:24,191 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 15:45:24,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:24,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761772992] [2024-12-02 15:45:24,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761772992] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:24,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:24,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:45:24,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633628591] [2024-12-02 15:45:24,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:24,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:45:24,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:24,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:45:24,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:45:24,193 INFO L87 Difference]: Start difference. First operand 3692 states and 4825 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 15:45:24,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:24,558 INFO L93 Difference]: Finished difference Result 7253 states and 9519 transitions. [2024-12-02 15:45:24,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:45:24,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 105 [2024-12-02 15:45:24,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:24,579 INFO L225 Difference]: With dead ends: 7253 [2024-12-02 15:45:24,579 INFO L226 Difference]: Without dead ends: 3743 [2024-12-02 15:45:24,587 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 15:45:24,587 INFO L435 NwaCegarLoop]: 265 mSDtfsCounter, 6 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:24,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 491 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:24,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3743 states. [2024-12-02 15:45:24,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3743 to 3702. [2024-12-02 15:45:24,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3702 states, 2748 states have (on average 1.3082241630276565) internal successors, (3595), 2782 states have internal predecessors, (3595), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2024-12-02 15:45:24,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3702 states to 3702 states and 4835 transitions. [2024-12-02 15:45:24,980 INFO L78 Accepts]: Start accepts. Automaton has 3702 states and 4835 transitions. Word has length 105 [2024-12-02 15:45:24,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:24,981 INFO L471 AbstractCegarLoop]: Abstraction has 3702 states and 4835 transitions. [2024-12-02 15:45:24,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 15:45:24,981 INFO L276 IsEmpty]: Start isEmpty. Operand 3702 states and 4835 transitions. [2024-12-02 15:45:24,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 15:45:24,983 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:24,983 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:24,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 15:45:24,983 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:24,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:24,984 INFO L85 PathProgramCache]: Analyzing trace with hash 594512028, now seen corresponding path program 1 times [2024-12-02 15:45:24,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:24,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7264371] [2024-12-02 15:45:24,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:24,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:25,098 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 15:45:25,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:25,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7264371] [2024-12-02 15:45:25,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7264371] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:25,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:25,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:45:25,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106910336] [2024-12-02 15:45:25,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:25,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:45:25,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:25,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:45:25,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:45:25,100 INFO L87 Difference]: Start difference. First operand 3702 states and 4835 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 15:45:25,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:25,312 INFO L93 Difference]: Finished difference Result 7204 states and 9430 transitions. [2024-12-02 15:45:25,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:45:25,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 105 [2024-12-02 15:45:25,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:25,328 INFO L225 Difference]: With dead ends: 7204 [2024-12-02 15:45:25,328 INFO L226 Difference]: Without dead ends: 3622 [2024-12-02 15:45:25,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:45:25,335 INFO L435 NwaCegarLoop]: 273 mSDtfsCounter, 64 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:25,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 762 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:25,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2024-12-02 15:45:25,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 2788. [2024-12-02 15:45:25,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 2068 states have (on average 1.303191489361702) internal successors, (2695), 2087 states have internal predecessors, (2695), 469 states have call successors, (469), 250 states have call predecessors, (469), 250 states have return successors, (469), 450 states have call predecessors, (469), 469 states have call successors, (469) [2024-12-02 15:45:25,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 3633 transitions. [2024-12-02 15:45:25,538 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 3633 transitions. Word has length 105 [2024-12-02 15:45:25,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:25,538 INFO L471 AbstractCegarLoop]: Abstraction has 2788 states and 3633 transitions. [2024-12-02 15:45:25,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 15:45:25,538 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 3633 transitions. [2024-12-02 15:45:25,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 15:45:25,542 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:25,542 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:45:25,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 15:45:25,542 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:25,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:25,542 INFO L85 PathProgramCache]: Analyzing trace with hash 2045136114, now seen corresponding path program 1 times [2024-12-02 15:45:25,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:25,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896039275] [2024-12-02 15:45:25,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:25,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:25,802 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 15:45:25,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:25,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896039275] [2024-12-02 15:45:25,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896039275] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:25,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822022282] [2024-12-02 15:45:25,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:25,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:25,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:25,804 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:25,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 15:45:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:26,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 15:45:26,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:26,071 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 15:45:26,071 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:45:26,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822022282] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:26,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:45:26,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-12-02 15:45:26,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939312381] [2024-12-02 15:45:26,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:26,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:45:26,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:26,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:45:26,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 15:45:26,073 INFO L87 Difference]: Start difference. First operand 2788 states and 3633 transitions. Second operand has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 15:45:26,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:26,253 INFO L93 Difference]: Finished difference Result 5245 states and 6876 transitions. [2024-12-02 15:45:26,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:45:26,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 156 [2024-12-02 15:45:26,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:26,265 INFO L225 Difference]: With dead ends: 5245 [2024-12-02 15:45:26,265 INFO L226 Difference]: Without dead ends: 2617 [2024-12-02 15:45:26,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 15:45:26,270 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 0 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:26,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1028 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:26,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2617 states. [2024-12-02 15:45:26,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2617 to 2600. [2024-12-02 15:45:26,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2600 states, 1925 states have (on average 1.2997402597402596) internal successors, (2502), 1942 states have internal predecessors, (2502), 440 states have call successors, (440), 234 states have call predecessors, (440), 234 states have return successors, (440), 423 states have call predecessors, (440), 440 states have call successors, (440) [2024-12-02 15:45:26,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 3382 transitions. [2024-12-02 15:45:26,558 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 3382 transitions. Word has length 156 [2024-12-02 15:45:26,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:26,558 INFO L471 AbstractCegarLoop]: Abstraction has 2600 states and 3382 transitions. [2024-12-02 15:45:26,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 15:45:26,559 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 3382 transitions. [2024-12-02 15:45:26,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-12-02 15:45:26,563 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:26,563 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:26,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 15:45:26,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:26,764 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:26,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:26,765 INFO L85 PathProgramCache]: Analyzing trace with hash -364480390, now seen corresponding path program 1 times [2024-12-02 15:45:26,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:26,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690763168] [2024-12-02 15:45:26,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:26,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:27,329 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 15:45:27,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:27,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690763168] [2024-12-02 15:45:27,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690763168] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:27,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076865482] [2024-12-02 15:45:27,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:27,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:27,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:27,331 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:27,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 15:45:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:27,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 15:45:27,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:27,923 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 33 proven. 44 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 15:45:27,924 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:45:28,273 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 15:45:28,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076865482] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:45:28,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:45:28,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 24 [2024-12-02 15:45:28,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474786422] [2024-12-02 15:45:28,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:45:28,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 15:45:28,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:28,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 15:45:28,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-12-02 15:45:28,277 INFO L87 Difference]: Start difference. First operand 2600 states and 3382 transitions. Second operand has 24 states, 24 states have (on average 11.166666666666666) internal successors, (268), 22 states have internal predecessors, (268), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) [2024-12-02 15:45:32,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:32,960 INFO L93 Difference]: Finished difference Result 7598 states and 9916 transitions. [2024-12-02 15:45:32,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-12-02 15:45:32,960 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 11.166666666666666) internal successors, (268), 22 states have internal predecessors, (268), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) Word has length 158 [2024-12-02 15:45:32,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:32,976 INFO L225 Difference]: With dead ends: 7598 [2024-12-02 15:45:32,976 INFO L226 Difference]: Without dead ends: 5241 [2024-12-02 15:45:32,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1798 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1040, Invalid=6100, Unknown=0, NotChecked=0, Total=7140 [2024-12-02 15:45:32,981 INFO L435 NwaCegarLoop]: 657 mSDtfsCounter, 2431 mSDsluCounter, 7041 mSDsCounter, 0 mSdLazyCounter, 3835 mSolverCounterSat, 921 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2431 SdHoareTripleChecker+Valid, 7698 SdHoareTripleChecker+Invalid, 4756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 921 IncrementalHoareTripleChecker+Valid, 3835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:32,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2431 Valid, 7698 Invalid, 4756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [921 Valid, 3835 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 15:45:32,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5241 states. [2024-12-02 15:45:33,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5241 to 4547. [2024-12-02 15:45:33,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4547 states, 3367 states have (on average 1.3035343035343034) internal successors, (4389), 3396 states have internal predecessors, (4389), 765 states have call successors, (765), 414 states have call predecessors, (765), 414 states have return successors, (765), 736 states have call predecessors, (765), 765 states have call successors, (765) [2024-12-02 15:45:33,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4547 states to 4547 states and 5919 transitions. [2024-12-02 15:45:33,385 INFO L78 Accepts]: Start accepts. Automaton has 4547 states and 5919 transitions. Word has length 158 [2024-12-02 15:45:33,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:33,386 INFO L471 AbstractCegarLoop]: Abstraction has 4547 states and 5919 transitions. [2024-12-02 15:45:33,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 11.166666666666666) internal successors, (268), 22 states have internal predecessors, (268), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) [2024-12-02 15:45:33,386 INFO L276 IsEmpty]: Start isEmpty. Operand 4547 states and 5919 transitions. [2024-12-02 15:45:33,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-12-02 15:45:33,390 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:33,390 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:33,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 15:45:33,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:33,591 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:33,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:33,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1983812197, now seen corresponding path program 1 times [2024-12-02 15:45:33,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:33,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085136709] [2024-12-02 15:45:33,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:33,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 15:45:34,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:34,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085136709] [2024-12-02 15:45:34,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085136709] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:34,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724295038] [2024-12-02 15:45:34,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:34,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:34,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:34,479 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:34,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 15:45:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:34,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-12-02 15:45:34,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:35,299 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 61 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 15:45:35,299 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:45:35,883 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 15:45:35,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724295038] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:45:35,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:45:35,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 26 [2024-12-02 15:45:35,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464143353] [2024-12-02 15:45:35,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:45:35,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 15:45:35,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:35,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 15:45:35,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2024-12-02 15:45:35,886 INFO L87 Difference]: Start difference. First operand 4547 states and 5919 transitions. Second operand has 26 states, 26 states have (on average 9.807692307692308) internal successors, (255), 26 states have internal predecessors, (255), 10 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (37), 10 states have call predecessors, (37), 10 states have call successors, (37) [2024-12-02 15:45:38,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:38,780 INFO L93 Difference]: Finished difference Result 10450 states and 13599 transitions. [2024-12-02 15:45:38,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-12-02 15:45:38,780 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.807692307692308) internal successors, (255), 26 states have internal predecessors, (255), 10 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (37), 10 states have call predecessors, (37), 10 states have call successors, (37) Word has length 159 [2024-12-02 15:45:38,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:38,799 INFO L225 Difference]: With dead ends: 10450 [2024-12-02 15:45:38,800 INFO L226 Difference]: Without dead ends: 6157 [2024-12-02 15:45:38,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1117 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=874, Invalid=3158, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 15:45:38,808 INFO L435 NwaCegarLoop]: 318 mSDtfsCounter, 1763 mSDsluCounter, 3279 mSDsCounter, 0 mSdLazyCounter, 1857 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1763 SdHoareTripleChecker+Valid, 3597 SdHoareTripleChecker+Invalid, 2325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 1857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:38,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1763 Valid, 3597 Invalid, 2325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 1857 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 15:45:38,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6157 states. [2024-12-02 15:45:39,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6157 to 5943. [2024-12-02 15:45:39,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5943 states, 4392 states have (on average 1.2962204007285973) internal successors, (5693), 4431 states have internal predecessors, (5693), 999 states have call successors, (999), 551 states have call predecessors, (999), 551 states have return successors, (999), 960 states have call predecessors, (999), 999 states have call successors, (999) [2024-12-02 15:45:39,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5943 states to 5943 states and 7691 transitions. [2024-12-02 15:45:39,441 INFO L78 Accepts]: Start accepts. Automaton has 5943 states and 7691 transitions. Word has length 159 [2024-12-02 15:45:39,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:39,441 INFO L471 AbstractCegarLoop]: Abstraction has 5943 states and 7691 transitions. [2024-12-02 15:45:39,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.807692307692308) internal successors, (255), 26 states have internal predecessors, (255), 10 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (37), 10 states have call predecessors, (37), 10 states have call successors, (37) [2024-12-02 15:45:39,442 INFO L276 IsEmpty]: Start isEmpty. Operand 5943 states and 7691 transitions. [2024-12-02 15:45:39,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 15:45:39,446 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:39,446 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:39,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 15:45:39,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:39,646 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:39,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:39,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1810657676, now seen corresponding path program 1 times [2024-12-02 15:45:39,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:39,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849273805] [2024-12-02 15:45:39,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:39,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:39,861 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-12-02 15:45:39,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:39,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849273805] [2024-12-02 15:45:39,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849273805] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:39,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:39,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 15:45:39,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930063319] [2024-12-02 15:45:39,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:39,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 15:45:39,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:39,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 15:45:39,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:45:39,862 INFO L87 Difference]: Start difference. First operand 5943 states and 7691 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 15:45:41,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:41,290 INFO L93 Difference]: Finished difference Result 17413 states and 22597 transitions. [2024-12-02 15:45:41,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:45:41,291 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 161 [2024-12-02 15:45:41,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:41,327 INFO L225 Difference]: With dead ends: 17413 [2024-12-02 15:45:41,327 INFO L226 Difference]: Without dead ends: 11776 [2024-12-02 15:45:41,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-12-02 15:45:41,337 INFO L435 NwaCegarLoop]: 489 mSDtfsCounter, 225 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:41,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 2595 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:45:41,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11776 states. [2024-12-02 15:45:42,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11776 to 8427. [2024-12-02 15:45:42,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8427 states, 6180 states have (on average 1.2944983818770226) internal successors, (8000), 6237 states have internal predecessors, (8000), 1463 states have call successors, (1463), 783 states have call predecessors, (1463), 783 states have return successors, (1463), 1406 states have call predecessors, (1463), 1463 states have call successors, (1463) [2024-12-02 15:45:42,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8427 states to 8427 states and 10926 transitions. [2024-12-02 15:45:42,815 INFO L78 Accepts]: Start accepts. Automaton has 8427 states and 10926 transitions. Word has length 161 [2024-12-02 15:45:42,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:42,815 INFO L471 AbstractCegarLoop]: Abstraction has 8427 states and 10926 transitions. [2024-12-02 15:45:42,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 15:45:42,816 INFO L276 IsEmpty]: Start isEmpty. Operand 8427 states and 10926 transitions. [2024-12-02 15:45:42,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 15:45:42,821 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:42,821 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:42,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 15:45:42,822 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:42,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:42,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1459390940, now seen corresponding path program 1 times [2024-12-02 15:45:42,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:42,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143828564] [2024-12-02 15:45:42,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:42,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:43,795 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 15:45:43,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:43,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143828564] [2024-12-02 15:45:43,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143828564] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:43,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754366549] [2024-12-02 15:45:43,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:43,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:43,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:43,798 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:43,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 15:45:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:44,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-12-02 15:45:44,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:44,495 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 59 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 15:45:44,495 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:45:45,472 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 15:45:45,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754366549] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:45:45,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:45:45,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 10] total 27 [2024-12-02 15:45:45,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611395877] [2024-12-02 15:45:45,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:45:45,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-12-02 15:45:45,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:45,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-12-02 15:45:45,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2024-12-02 15:45:45,474 INFO L87 Difference]: Start difference. First operand 8427 states and 10926 transitions. Second operand has 27 states, 27 states have (on average 8.962962962962964) internal successors, (242), 27 states have internal predecessors, (242), 8 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2024-12-02 15:45:48,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:48,197 INFO L93 Difference]: Finished difference Result 17316 states and 22515 transitions. [2024-12-02 15:45:48,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 15:45:48,198 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.962962962962964) internal successors, (242), 27 states have internal predecessors, (242), 8 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) Word has length 161 [2024-12-02 15:45:48,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:48,217 INFO L225 Difference]: With dead ends: 17316 [2024-12-02 15:45:48,217 INFO L226 Difference]: Without dead ends: 9195 [2024-12-02 15:45:48,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=315, Invalid=1491, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 15:45:48,226 INFO L435 NwaCegarLoop]: 467 mSDtfsCounter, 1231 mSDsluCounter, 3572 mSDsCounter, 0 mSdLazyCounter, 2025 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 4039 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 2025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:48,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 4039 Invalid, 2376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 2025 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 15:45:48,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9195 states. [2024-12-02 15:45:49,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9195 to 8831. [2024-12-02 15:45:49,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8831 states, 6487 states have (on average 1.2933559426545398) internal successors, (8390), 6547 states have internal predecessors, (8390), 1526 states have call successors, (1526), 817 states have call predecessors, (1526), 817 states have return successors, (1526), 1466 states have call predecessors, (1526), 1526 states have call successors, (1526) [2024-12-02 15:45:49,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8831 states to 8831 states and 11442 transitions. [2024-12-02 15:45:49,404 INFO L78 Accepts]: Start accepts. Automaton has 8831 states and 11442 transitions. Word has length 161 [2024-12-02 15:45:49,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:49,405 INFO L471 AbstractCegarLoop]: Abstraction has 8831 states and 11442 transitions. [2024-12-02 15:45:49,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.962962962962964) internal successors, (242), 27 states have internal predecessors, (242), 8 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2024-12-02 15:45:49,405 INFO L276 IsEmpty]: Start isEmpty. Operand 8831 states and 11442 transitions. [2024-12-02 15:45:49,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-12-02 15:45:49,421 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:49,421 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:49,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 15:45:49,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:49,622 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:49,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:49,623 INFO L85 PathProgramCache]: Analyzing trace with hash -958161478, now seen corresponding path program 1 times [2024-12-02 15:45:49,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:49,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694127364] [2024-12-02 15:45:49,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:49,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:50,355 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-12-02 15:45:50,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:50,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694127364] [2024-12-02 15:45:50,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694127364] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:50,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579947018] [2024-12-02 15:45:50,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:50,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:50,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:50,357 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:50,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 15:45:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:50,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 15:45:50,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:50,942 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 66 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 15:45:50,942 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:45:51,450 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 15:45:51,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579947018] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:45:51,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:45:51,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 23 [2024-12-02 15:45:51,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089250493] [2024-12-02 15:45:51,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:45:51,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 15:45:51,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:51,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 15:45:51,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2024-12-02 15:45:51,453 INFO L87 Difference]: Start difference. First operand 8831 states and 11442 transitions. Second operand has 23 states, 22 states have (on average 12.227272727272727) internal successors, (269), 21 states have internal predecessors, (269), 9 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 10 states have call predecessors, (36), 9 states have call successors, (36) [2024-12-02 15:45:57,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:57,145 INFO L93 Difference]: Finished difference Result 31780 states and 41053 transitions. [2024-12-02 15:45:57,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-12-02 15:45:57,146 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 12.227272727272727) internal successors, (269), 21 states have internal predecessors, (269), 9 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 10 states have call predecessors, (36), 9 states have call successors, (36) Word has length 162 [2024-12-02 15:45:57,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:57,193 INFO L225 Difference]: With dead ends: 31780 [2024-12-02 15:45:57,193 INFO L226 Difference]: Without dead ends: 23228 [2024-12-02 15:45:57,208 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=710, Invalid=4260, Unknown=0, NotChecked=0, Total=4970 [2024-12-02 15:45:57,208 INFO L435 NwaCegarLoop]: 453 mSDtfsCounter, 3850 mSDsluCounter, 3758 mSDsCounter, 0 mSdLazyCounter, 2100 mSolverCounterSat, 1381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3858 SdHoareTripleChecker+Valid, 4211 SdHoareTripleChecker+Invalid, 3481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1381 IncrementalHoareTripleChecker+Valid, 2100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:57,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3858 Valid, 4211 Invalid, 3481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1381 Valid, 2100 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 15:45:57,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23228 states. [2024-12-02 15:45:59,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23228 to 14627. [2024-12-02 15:45:59,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14627 states, 10695 states have (on average 1.2964936886395513) internal successors, (13866), 10807 states have internal predecessors, (13866), 2546 states have call successors, (2546), 1385 states have call predecessors, (2546), 1385 states have return successors, (2546), 2434 states have call predecessors, (2546), 2546 states have call successors, (2546) [2024-12-02 15:45:59,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14627 states to 14627 states and 18958 transitions. [2024-12-02 15:45:59,327 INFO L78 Accepts]: Start accepts. Automaton has 14627 states and 18958 transitions. Word has length 162 [2024-12-02 15:45:59,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:59,327 INFO L471 AbstractCegarLoop]: Abstraction has 14627 states and 18958 transitions. [2024-12-02 15:45:59,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 12.227272727272727) internal successors, (269), 21 states have internal predecessors, (269), 9 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 10 states have call predecessors, (36), 9 states have call successors, (36) [2024-12-02 15:45:59,328 INFO L276 IsEmpty]: Start isEmpty. Operand 14627 states and 18958 transitions. [2024-12-02 15:45:59,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-12-02 15:45:59,336 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:59,336 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:59,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 15:45:59,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:59,536 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:59,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:59,537 INFO L85 PathProgramCache]: Analyzing trace with hash 334524777, now seen corresponding path program 1 times [2024-12-02 15:45:59,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:59,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089106911] [2024-12-02 15:45:59,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:59,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:59,740 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-12-02 15:45:59,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:59,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089106911] [2024-12-02 15:45:59,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089106911] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:59,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366058706] [2024-12-02 15:45:59,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:59,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:59,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:59,742 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:59,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 15:45:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:59,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-12-02 15:45:59,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:46:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 60 proven. 25 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 15:46:00,320 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:46:00,778 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-12-02 15:46:00,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366058706] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:46:00,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:46:00,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 23 [2024-12-02 15:46:00,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197831992] [2024-12-02 15:46:00,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:46:00,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 15:46:00,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:00,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 15:46:00,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-12-02 15:46:00,779 INFO L87 Difference]: Start difference. First operand 14627 states and 18958 transitions. Second operand has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 22 states have internal predecessors, (283), 9 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (41), 10 states have call predecessors, (41), 9 states have call successors, (41) [2024-12-02 15:46:08,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:46:08,516 INFO L93 Difference]: Finished difference Result 37066 states and 48251 transitions. [2024-12-02 15:46:08,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-12-02 15:46:08,517 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 22 states have internal predecessors, (283), 9 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (41), 10 states have call predecessors, (41), 9 states have call successors, (41) Word has length 171 [2024-12-02 15:46:08,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:46:08,564 INFO L225 Difference]: With dead ends: 37066 [2024-12-02 15:46:08,564 INFO L226 Difference]: Without dead ends: 22759 [2024-12-02 15:46:08,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7972 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2714, Invalid=18456, Unknown=0, NotChecked=0, Total=21170 [2024-12-02 15:46:08,590 INFO L435 NwaCegarLoop]: 390 mSDtfsCounter, 3114 mSDsluCounter, 3970 mSDsCounter, 0 mSdLazyCounter, 2268 mSolverCounterSat, 917 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3114 SdHoareTripleChecker+Valid, 4360 SdHoareTripleChecker+Invalid, 3185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 917 IncrementalHoareTripleChecker+Valid, 2268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:46:08,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3114 Valid, 4360 Invalid, 3185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [917 Valid, 2268 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 15:46:08,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22759 states. [2024-12-02 15:46:11,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22759 to 21454. [2024-12-02 15:46:11,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21454 states, 15765 states have (on average 1.3000951474785918) internal successors, (20496), 15924 states have internal predecessors, (20496), 3670 states have call successors, (3670), 2018 states have call predecessors, (3670), 2018 states have return successors, (3670), 3511 states have call predecessors, (3670), 3670 states have call successors, (3670) [2024-12-02 15:46:11,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21454 states to 21454 states and 27836 transitions. [2024-12-02 15:46:11,952 INFO L78 Accepts]: Start accepts. Automaton has 21454 states and 27836 transitions. Word has length 171 [2024-12-02 15:46:11,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:46:11,952 INFO L471 AbstractCegarLoop]: Abstraction has 21454 states and 27836 transitions. [2024-12-02 15:46:11,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 22 states have internal predecessors, (283), 9 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (41), 10 states have call predecessors, (41), 9 states have call successors, (41) [2024-12-02 15:46:11,952 INFO L276 IsEmpty]: Start isEmpty. Operand 21454 states and 27836 transitions. [2024-12-02 15:46:11,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-12-02 15:46:11,961 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:46:11,962 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:11,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 15:46:12,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:12,162 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:46:12,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:12,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1352529230, now seen corresponding path program 1 times [2024-12-02 15:46:12,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:12,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97791953] [2024-12-02 15:46:12,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:12,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:12,863 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-12-02 15:46:12,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:12,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97791953] [2024-12-02 15:46:12,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97791953] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:46:12,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259105338] [2024-12-02 15:46:12,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:12,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:12,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:46:12,865 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:46:12,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 15:46:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:13,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 15:46:13,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:46:13,159 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 52 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-12-02 15:46:13,159 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:46:13,249 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-12-02 15:46:13,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259105338] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:46:13,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:46:13,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2024-12-02 15:46:13,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970360363] [2024-12-02 15:46:13,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:46:13,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 15:46:13,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:13,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 15:46:13,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:46:13,251 INFO L87 Difference]: Start difference. First operand 21454 states and 27836 transitions. Second operand has 15 states, 15 states have (on average 13.866666666666667) internal successors, (208), 14 states have internal predecessors, (208), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2024-12-02 15:46:17,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:46:17,829 INFO L93 Difference]: Finished difference Result 43959 states and 56976 transitions. [2024-12-02 15:46:17,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-12-02 15:46:17,829 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 13.866666666666667) internal successors, (208), 14 states have internal predecessors, (208), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 171 [2024-12-02 15:46:17,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:46:17,883 INFO L225 Difference]: With dead ends: 43959 [2024-12-02 15:46:17,883 INFO L226 Difference]: Without dead ends: 22720 [2024-12-02 15:46:17,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=249, Invalid=1311, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 15:46:17,910 INFO L435 NwaCegarLoop]: 366 mSDtfsCounter, 1003 mSDsluCounter, 2881 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 3247 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:46:17,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 3247 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 15:46:17,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22720 states. [2024-12-02 15:46:21,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22720 to 22157. [2024-12-02 15:46:21,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22157 states, 16292 states have (on average 1.2993493739258533) internal successors, (21169), 16456 states have internal predecessors, (21169), 3781 states have call successors, (3781), 2083 states have call predecessors, (3781), 2083 states have return successors, (3781), 3617 states have call predecessors, (3781), 3781 states have call successors, (3781) [2024-12-02 15:46:21,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22157 states to 22157 states and 28731 transitions. [2024-12-02 15:46:21,878 INFO L78 Accepts]: Start accepts. Automaton has 22157 states and 28731 transitions. Word has length 171 [2024-12-02 15:46:21,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:46:21,879 INFO L471 AbstractCegarLoop]: Abstraction has 22157 states and 28731 transitions. [2024-12-02 15:46:21,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.866666666666667) internal successors, (208), 14 states have internal predecessors, (208), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2024-12-02 15:46:21,879 INFO L276 IsEmpty]: Start isEmpty. Operand 22157 states and 28731 transitions. [2024-12-02 15:46:21,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-12-02 15:46:21,884 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:46:21,884 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:21,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 15:46:22,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:22,085 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:46:22,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:22,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1832071165, now seen corresponding path program 1 times [2024-12-02 15:46:22,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:22,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889744639] [2024-12-02 15:46:22,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:22,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:22,442 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-12-02 15:46:22,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:22,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889744639] [2024-12-02 15:46:22,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889744639] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:46:22,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599562525] [2024-12-02 15:46:22,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:22,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:22,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:46:22,444 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:46:22,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 15:46:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:22,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-12-02 15:46:22,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:46:22,922 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 76 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 15:46:22,922 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:46:23,387 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-12-02 15:46:23,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599562525] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:46:23,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:46:23,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 22 [2024-12-02 15:46:23,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048277606] [2024-12-02 15:46:23,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:46:23,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 15:46:23,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:23,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 15:46:23,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2024-12-02 15:46:23,389 INFO L87 Difference]: Start difference. First operand 22157 states and 28731 transitions. Second operand has 22 states, 22 states have (on average 11.590909090909092) internal successors, (255), 21 states have internal predecessors, (255), 8 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (34), 9 states have call predecessors, (34), 8 states have call successors, (34) [2024-12-02 15:46:28,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:46:28,243 INFO L93 Difference]: Finished difference Result 44017 states and 57148 transitions. [2024-12-02 15:46:28,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-12-02 15:46:28,244 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.590909090909092) internal successors, (255), 21 states have internal predecessors, (255), 8 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (34), 9 states have call predecessors, (34), 8 states have call successors, (34) Word has length 179 [2024-12-02 15:46:28,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:46:28,306 INFO L225 Difference]: With dead ends: 44017 [2024-12-02 15:46:28,306 INFO L226 Difference]: Without dead ends: 22180 [2024-12-02 15:46:28,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=402, Invalid=1490, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 15:46:28,335 INFO L435 NwaCegarLoop]: 366 mSDtfsCounter, 1831 mSDsluCounter, 3416 mSDsCounter, 0 mSdLazyCounter, 2028 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 3782 SdHoareTripleChecker+Invalid, 2560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 2028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:46:28,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1831 Valid, 3782 Invalid, 2560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 2028 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 15:46:28,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22180 states. [2024-12-02 15:46:32,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22180 to 22088. [2024-12-02 15:46:32,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22088 states, 16233 states have (on average 1.2988357050452781) internal successors, (21084), 16397 states have internal predecessors, (21084), 3776 states have call successors, (3776), 2078 states have call predecessors, (3776), 2078 states have return successors, (3776), 3612 states have call predecessors, (3776), 3776 states have call successors, (3776) [2024-12-02 15:46:32,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22088 states to 22088 states and 28636 transitions. [2024-12-02 15:46:32,193 INFO L78 Accepts]: Start accepts. Automaton has 22088 states and 28636 transitions. Word has length 179 [2024-12-02 15:46:32,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:46:32,193 INFO L471 AbstractCegarLoop]: Abstraction has 22088 states and 28636 transitions. [2024-12-02 15:46:32,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.590909090909092) internal successors, (255), 21 states have internal predecessors, (255), 8 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (34), 9 states have call predecessors, (34), 8 states have call successors, (34) [2024-12-02 15:46:32,193 INFO L276 IsEmpty]: Start isEmpty. Operand 22088 states and 28636 transitions. [2024-12-02 15:46:32,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-12-02 15:46:32,199 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:46:32,199 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:32,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 15:46:32,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-12-02 15:46:32,400 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:46:32,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:32,400 INFO L85 PathProgramCache]: Analyzing trace with hash 648932033, now seen corresponding path program 1 times [2024-12-02 15:46:32,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:32,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266248010] [2024-12-02 15:46:32,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:32,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:32,951 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-12-02 15:46:32,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:32,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266248010] [2024-12-02 15:46:32,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266248010] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:46:32,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959363315] [2024-12-02 15:46:32,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:32,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:32,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:46:32,953 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:46:32,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 15:46:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:33,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 15:46:33,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:46:33,359 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 63 proven. 27 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 15:46:33,359 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:46:33,542 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-12-02 15:46:33,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959363315] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:46:33,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:46:33,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 20 [2024-12-02 15:46:33,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506333467] [2024-12-02 15:46:33,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:46:33,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 15:46:33,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:33,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 15:46:33,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-12-02 15:46:33,543 INFO L87 Difference]: Start difference. First operand 22088 states and 28636 transitions. Second operand has 20 states, 20 states have (on average 12.65) internal successors, (253), 20 states have internal predecessors, (253), 8 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (43), 8 states have call predecessors, (43), 8 states have call successors, (43) [2024-12-02 15:46:39,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:46:39,509 INFO L93 Difference]: Finished difference Result 46423 states and 60179 transitions. [2024-12-02 15:46:39,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-12-02 15:46:39,510 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 12.65) internal successors, (253), 20 states have internal predecessors, (253), 8 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (43), 8 states have call predecessors, (43), 8 states have call successors, (43) Word has length 179 [2024-12-02 15:46:39,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:46:39,581 INFO L225 Difference]: With dead ends: 46423 [2024-12-02 15:46:39,581 INFO L226 Difference]: Without dead ends: 24655 [2024-12-02 15:46:39,613 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=388, Invalid=1964, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 15:46:39,613 INFO L435 NwaCegarLoop]: 547 mSDtfsCounter, 1401 mSDsluCounter, 4704 mSDsCounter, 0 mSdLazyCounter, 2971 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 5251 SdHoareTripleChecker+Invalid, 3440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 2971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:46:39,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1401 Valid, 5251 Invalid, 3440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 2971 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 15:46:39,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24655 states. [2024-12-02 15:46:43,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24655 to 23565. [2024-12-02 15:46:43,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23565 states, 17342 states have (on average 1.2965632568331218) internal successors, (22485), 17516 states have internal predecessors, (22485), 4000 states have call successors, (4000), 2222 states have call predecessors, (4000), 2222 states have return successors, (4000), 3826 states have call predecessors, (4000), 4000 states have call successors, (4000) [2024-12-02 15:46:43,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23565 states to 23565 states and 30485 transitions. [2024-12-02 15:46:43,797 INFO L78 Accepts]: Start accepts. Automaton has 23565 states and 30485 transitions. Word has length 179 [2024-12-02 15:46:43,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:46:43,797 INFO L471 AbstractCegarLoop]: Abstraction has 23565 states and 30485 transitions. [2024-12-02 15:46:43,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.65) internal successors, (253), 20 states have internal predecessors, (253), 8 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (43), 8 states have call predecessors, (43), 8 states have call successors, (43) [2024-12-02 15:46:43,797 INFO L276 IsEmpty]: Start isEmpty. Operand 23565 states and 30485 transitions. [2024-12-02 15:46:43,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-12-02 15:46:43,805 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:46:43,805 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:43,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 15:46:44,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-12-02 15:46:44,006 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:46:44,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:44,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1840403702, now seen corresponding path program 1 times [2024-12-02 15:46:44,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:44,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342243113] [2024-12-02 15:46:44,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:44,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:44,964 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 29 proven. 8 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-12-02 15:46:44,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:44,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342243113] [2024-12-02 15:46:44,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342243113] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:46:44,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752310473] [2024-12-02 15:46:44,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:44,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:44,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:46:44,966 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:46:44,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 15:46:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:45,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 15:46:45,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:46:45,798 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 64 proven. 28 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 15:46:45,798 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:46:46,436 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-12-02 15:46:46,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752310473] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:46:46,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:46:46,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 10] total 23 [2024-12-02 15:46:46,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780168461] [2024-12-02 15:46:46,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:46:46,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 15:46:46,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:46,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 15:46:46,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2024-12-02 15:46:46,438 INFO L87 Difference]: Start difference. First operand 23565 states and 30485 transitions. Second operand has 23 states, 22 states have (on average 13.409090909090908) internal successors, (295), 21 states have internal predecessors, (295), 10 states have call successors, (43), 6 states have call predecessors, (43), 7 states have return successors, (42), 11 states have call predecessors, (42), 10 states have call successors, (42) [2024-12-02 15:46:55,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:46:55,322 INFO L93 Difference]: Finished difference Result 59830 states and 77383 transitions. [2024-12-02 15:46:55,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-12-02 15:46:55,322 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 13.409090909090908) internal successors, (295), 21 states have internal predecessors, (295), 10 states have call successors, (43), 6 states have call predecessors, (43), 7 states have return successors, (42), 11 states have call predecessors, (42), 10 states have call successors, (42) Word has length 180 [2024-12-02 15:46:55,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:46:55,418 INFO L225 Difference]: With dead ends: 59830 [2024-12-02 15:46:55,419 INFO L226 Difference]: Without dead ends: 36480 [2024-12-02 15:46:55,452 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=685, Invalid=2621, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 15:46:55,453 INFO L435 NwaCegarLoop]: 463 mSDtfsCounter, 1634 mSDsluCounter, 3756 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1634 SdHoareTripleChecker+Valid, 4219 SdHoareTripleChecker+Invalid, 2549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:46:55,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1634 Valid, 4219 Invalid, 2549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 1982 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 15:46:55,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36480 states. [2024-12-02 15:47:01,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36480 to 30023. [2024-12-02 15:47:01,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30023 states, 22001 states have (on average 1.297622835325667) internal successors, (28549), 22232 states have internal predecessors, (28549), 5175 states have call successors, (5175), 2846 states have call predecessors, (5175), 2846 states have return successors, (5175), 4944 states have call predecessors, (5175), 5175 states have call successors, (5175) [2024-12-02 15:47:01,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30023 states to 30023 states and 38899 transitions. [2024-12-02 15:47:01,375 INFO L78 Accepts]: Start accepts. Automaton has 30023 states and 38899 transitions. Word has length 180 [2024-12-02 15:47:01,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:47:01,375 INFO L471 AbstractCegarLoop]: Abstraction has 30023 states and 38899 transitions. [2024-12-02 15:47:01,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 13.409090909090908) internal successors, (295), 21 states have internal predecessors, (295), 10 states have call successors, (43), 6 states have call predecessors, (43), 7 states have return successors, (42), 11 states have call predecessors, (42), 10 states have call successors, (42) [2024-12-02 15:47:01,375 INFO L276 IsEmpty]: Start isEmpty. Operand 30023 states and 38899 transitions. [2024-12-02 15:47:01,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-12-02 15:47:01,381 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:47:01,381 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:47:01,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 15:47:01,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-12-02 15:47:01,581 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:47:01,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:47:01,582 INFO L85 PathProgramCache]: Analyzing trace with hash 933389200, now seen corresponding path program 1 times [2024-12-02 15:47:01,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:47:01,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841053225] [2024-12-02 15:47:01,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:47:01,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:47:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:47:02,251 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 16 proven. 22 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-12-02 15:47:02,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:47:02,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841053225] [2024-12-02 15:47:02,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841053225] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:47:02,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556328382] [2024-12-02 15:47:02,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:47:02,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:47:02,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:47:02,253 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:47:02,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 15:47:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:47:02,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 15:47:02,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:47:02,739 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 77 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 15:47:02,739 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:47:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 27 proven. 6 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-12-02 15:47:02,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556328382] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:47:02,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:47:02,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 7] total 22 [2024-12-02 15:47:02,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788909653] [2024-12-02 15:47:02,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:47:02,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 15:47:02,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:47:02,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 15:47:02,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2024-12-02 15:47:02,942 INFO L87 Difference]: Start difference. First operand 30023 states and 38899 transitions. Second operand has 22 states, 22 states have (on average 12.136363636363637) internal successors, (267), 19 states have internal predecessors, (267), 7 states have call successors, (46), 4 states have call predecessors, (46), 8 states have return successors, (46), 10 states have call predecessors, (46), 7 states have call successors, (46) [2024-12-02 15:47:10,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:47:10,066 INFO L93 Difference]: Finished difference Result 52795 states and 67533 transitions. [2024-12-02 15:47:10,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-02 15:47:10,067 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 12.136363636363637) internal successors, (267), 19 states have internal predecessors, (267), 7 states have call successors, (46), 4 states have call predecessors, (46), 8 states have return successors, (46), 10 states have call predecessors, (46), 7 states have call successors, (46) Word has length 187 [2024-12-02 15:47:10,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:47:10,138 INFO L225 Difference]: With dead ends: 52795 [2024-12-02 15:47:10,138 INFO L226 Difference]: Without dead ends: 22540 [2024-12-02 15:47:10,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=455, Invalid=1801, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 15:47:10,178 INFO L435 NwaCegarLoop]: 491 mSDtfsCounter, 1674 mSDsluCounter, 4009 mSDsCounter, 0 mSdLazyCounter, 1744 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1674 SdHoareTripleChecker+Valid, 4500 SdHoareTripleChecker+Invalid, 2358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 1744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:47:10,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1674 Valid, 4500 Invalid, 2358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [614 Valid, 1744 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 15:47:10,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22540 states. [2024-12-02 15:47:13,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22540 to 16362. [2024-12-02 15:47:13,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16362 states, 12144 states have (on average 1.2769268774703557) internal successors, (15507), 12268 states have internal predecessors, (15507), 2661 states have call successors, (2661), 1556 states have call predecessors, (2661), 1556 states have return successors, (2661), 2537 states have call predecessors, (2661), 2661 states have call successors, (2661) [2024-12-02 15:47:13,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16362 states to 16362 states and 20829 transitions. [2024-12-02 15:47:13,947 INFO L78 Accepts]: Start accepts. Automaton has 16362 states and 20829 transitions. Word has length 187 [2024-12-02 15:47:13,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:47:13,947 INFO L471 AbstractCegarLoop]: Abstraction has 16362 states and 20829 transitions. [2024-12-02 15:47:13,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 12.136363636363637) internal successors, (267), 19 states have internal predecessors, (267), 7 states have call successors, (46), 4 states have call predecessors, (46), 8 states have return successors, (46), 10 states have call predecessors, (46), 7 states have call successors, (46) [2024-12-02 15:47:13,948 INFO L276 IsEmpty]: Start isEmpty. Operand 16362 states and 20829 transitions. [2024-12-02 15:47:13,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-12-02 15:47:13,951 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:47:13,952 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:47:13,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 15:47:14,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-12-02 15:47:14,152 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:47:14,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:47:14,153 INFO L85 PathProgramCache]: Analyzing trace with hash -283356298, now seen corresponding path program 1 times [2024-12-02 15:47:14,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:47:14,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850226610] [2024-12-02 15:47:14,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:47:14,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:47:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:47:14,822 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 43 proven. 13 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 15:47:14,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:47:14,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850226610] [2024-12-02 15:47:14,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850226610] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:47:14,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397663851] [2024-12-02 15:47:14,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:47:14,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:47:14,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:47:14,824 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:47:14,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 15:47:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:47:15,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 15:47:15,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:47:15,334 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 63 proven. 60 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 15:47:15,335 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:47:15,609 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 22 proven. 26 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-12-02 15:47:15,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397663851] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:47:15,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:47:15,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 8] total 24 [2024-12-02 15:47:15,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259232976] [2024-12-02 15:47:15,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:47:15,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 15:47:15,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:47:15,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 15:47:15,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2024-12-02 15:47:15,612 INFO L87 Difference]: Start difference. First operand 16362 states and 20829 transitions. Second operand has 24 states, 24 states have (on average 12.125) internal successors, (291), 20 states have internal predecessors, (291), 7 states have call successors, (45), 4 states have call predecessors, (45), 9 states have return successors, (44), 11 states have call predecessors, (44), 7 states have call successors, (44) [2024-12-02 15:47:21,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:47:21,350 INFO L93 Difference]: Finished difference Result 33540 states and 42590 transitions. [2024-12-02 15:47:21,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 15:47:21,351 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 12.125) internal successors, (291), 20 states have internal predecessors, (291), 7 states have call successors, (45), 4 states have call predecessors, (45), 9 states have return successors, (44), 11 states have call predecessors, (44), 7 states have call successors, (44) Word has length 196 [2024-12-02 15:47:21,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:47:21,404 INFO L225 Difference]: With dead ends: 33540 [2024-12-02 15:47:21,405 INFO L226 Difference]: Without dead ends: 17468 [2024-12-02 15:47:21,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=435, Invalid=2321, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 15:47:21,423 INFO L435 NwaCegarLoop]: 577 mSDtfsCounter, 1170 mSDsluCounter, 6195 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 6772 SdHoareTripleChecker+Invalid, 2390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:47:21,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 6772 Invalid, 2390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 15:47:21,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17468 states. [2024-12-02 15:47:25,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17468 to 16362. [2024-12-02 15:47:25,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16362 states, 12144 states have (on average 1.2733036890645586) internal successors, (15463), 12268 states have internal predecessors, (15463), 2661 states have call successors, (2661), 1556 states have call predecessors, (2661), 1556 states have return successors, (2661), 2537 states have call predecessors, (2661), 2661 states have call successors, (2661) [2024-12-02 15:47:25,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16362 states to 16362 states and 20785 transitions. [2024-12-02 15:47:25,218 INFO L78 Accepts]: Start accepts. Automaton has 16362 states and 20785 transitions. Word has length 196 [2024-12-02 15:47:25,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:47:25,218 INFO L471 AbstractCegarLoop]: Abstraction has 16362 states and 20785 transitions. [2024-12-02 15:47:25,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 12.125) internal successors, (291), 20 states have internal predecessors, (291), 7 states have call successors, (45), 4 states have call predecessors, (45), 9 states have return successors, (44), 11 states have call predecessors, (44), 7 states have call successors, (44) [2024-12-02 15:47:25,219 INFO L276 IsEmpty]: Start isEmpty. Operand 16362 states and 20785 transitions. [2024-12-02 15:47:25,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-12-02 15:47:25,222 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:47:25,222 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:47:25,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 15:47:25,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-12-02 15:47:25,422 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:47:25,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:47:25,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1611689432, now seen corresponding path program 1 times [2024-12-02 15:47:25,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:47:25,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234724000] [2024-12-02 15:47:25,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:47:25,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:47:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:47:25,899 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-12-02 15:47:25,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:47:25,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234724000] [2024-12-02 15:47:25,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234724000] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:47:25,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:47:25,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 15:47:25,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802535443] [2024-12-02 15:47:25,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:47:25,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 15:47:25,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:47:25,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 15:47:25,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:47:25,900 INFO L87 Difference]: Start difference. First operand 16362 states and 20785 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 15:47:29,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:47:29,690 INFO L93 Difference]: Finished difference Result 32704 states and 41543 transitions. [2024-12-02 15:47:29,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:47:29,691 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 196 [2024-12-02 15:47:29,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:47:29,747 INFO L225 Difference]: With dead ends: 32704 [2024-12-02 15:47:29,747 INFO L226 Difference]: Without dead ends: 16632 [2024-12-02 15:47:29,766 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-12-02 15:47:29,767 INFO L435 NwaCegarLoop]: 414 mSDtfsCounter, 451 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:47:29,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 1743 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:47:29,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16632 states. [2024-12-02 15:47:33,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16632 to 16350. [2024-12-02 15:47:33,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16350 states, 12132 states have (on average 1.2715957797560171) internal successors, (15427), 12256 states have internal predecessors, (15427), 2661 states have call successors, (2661), 1556 states have call predecessors, (2661), 1556 states have return successors, (2661), 2537 states have call predecessors, (2661), 2661 states have call successors, (2661) [2024-12-02 15:47:33,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16350 states to 16350 states and 20749 transitions. [2024-12-02 15:47:33,323 INFO L78 Accepts]: Start accepts. Automaton has 16350 states and 20749 transitions. Word has length 196 [2024-12-02 15:47:33,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:47:33,324 INFO L471 AbstractCegarLoop]: Abstraction has 16350 states and 20749 transitions. [2024-12-02 15:47:33,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 15:47:33,324 INFO L276 IsEmpty]: Start isEmpty. Operand 16350 states and 20749 transitions. [2024-12-02 15:47:33,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-12-02 15:47:33,327 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:47:33,327 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:47:33,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-12-02 15:47:33,327 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:47:33,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:47:33,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1216790633, now seen corresponding path program 1 times [2024-12-02 15:47:33,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:47:33,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395778353] [2024-12-02 15:47:33,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:47:33,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:47:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:47:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 15:47:33,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:47:33,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395778353] [2024-12-02 15:47:33,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395778353] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:47:33,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822867487] [2024-12-02 15:47:33,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:47:33,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:47:33,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:47:33,715 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:47:33,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 15:47:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:47:33,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 850 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-12-02 15:47:33,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:47:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 86 proven. 14 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 15:47:34,377 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:47:35,041 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 15:47:35,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822867487] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:47:35,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:47:35,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 30 [2024-12-02 15:47:35,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642718945] [2024-12-02 15:47:35,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:47:35,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 15:47:35,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:47:35,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 15:47:35,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2024-12-02 15:47:35,043 INFO L87 Difference]: Start difference. First operand 16350 states and 20749 transitions. Second operand has 30 states, 30 states have (on average 10.5) internal successors, (315), 29 states have internal predecessors, (315), 11 states have call successors, (49), 5 states have call predecessors, (49), 6 states have return successors, (49), 12 states have call predecessors, (49), 11 states have call successors, (49) [2024-12-02 15:47:42,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:47:42,031 INFO L93 Difference]: Finished difference Result 40515 states and 51534 transitions. [2024-12-02 15:47:42,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-12-02 15:47:42,031 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 10.5) internal successors, (315), 29 states have internal predecessors, (315), 11 states have call successors, (49), 5 states have call predecessors, (49), 6 states have return successors, (49), 12 states have call predecessors, (49), 11 states have call successors, (49) Word has length 197 [2024-12-02 15:47:42,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:47:42,104 INFO L225 Difference]: With dead ends: 40515 [2024-12-02 15:47:42,104 INFO L226 Difference]: Without dead ends: 24455 [2024-12-02 15:47:42,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=535, Invalid=3125, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 15:47:42,126 INFO L435 NwaCegarLoop]: 369 mSDtfsCounter, 1458 mSDsluCounter, 4265 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 4634 SdHoareTripleChecker+Invalid, 3010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:47:42,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 4634 Invalid, 3010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 15:47:42,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24455 states. [2024-12-02 15:47:47,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24455 to 23818. [2024-12-02 15:47:47,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23818 states, 17650 states have (on average 1.271784702549575) internal successors, (22447), 17839 states have internal predecessors, (22447), 3898 states have call successors, (3898), 2269 states have call predecessors, (3898), 2269 states have return successors, (3898), 3709 states have call predecessors, (3898), 3898 states have call successors, (3898) [2024-12-02 15:47:47,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23818 states to 23818 states and 30243 transitions. [2024-12-02 15:47:47,369 INFO L78 Accepts]: Start accepts. Automaton has 23818 states and 30243 transitions. Word has length 197 [2024-12-02 15:47:47,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:47:47,370 INFO L471 AbstractCegarLoop]: Abstraction has 23818 states and 30243 transitions. [2024-12-02 15:47:47,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 10.5) internal successors, (315), 29 states have internal predecessors, (315), 11 states have call successors, (49), 5 states have call predecessors, (49), 6 states have return successors, (49), 12 states have call predecessors, (49), 11 states have call successors, (49) [2024-12-02 15:47:47,370 INFO L276 IsEmpty]: Start isEmpty. Operand 23818 states and 30243 transitions. [2024-12-02 15:47:47,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-12-02 15:47:47,373 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:47:47,373 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:47:47,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 15:47:47,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:47:47,574 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:47:47,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:47:47,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1892086507, now seen corresponding path program 1 times [2024-12-02 15:47:47,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:47:47,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14554145] [2024-12-02 15:47:47,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:47:47,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:47:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:47:47,733 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-12-02 15:47:47,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:47:47,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14554145] [2024-12-02 15:47:47,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14554145] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:47:47,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:47:47,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 15:47:47,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547485585] [2024-12-02 15:47:47,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:47:47,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 15:47:47,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:47:47,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 15:47:47,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:47:47,735 INFO L87 Difference]: Start difference. First operand 23818 states and 30243 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 15:47:56,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:47:56,342 INFO L93 Difference]: Finished difference Result 57946 states and 73174 transitions. [2024-12-02 15:47:56,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:47:56,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 198 [2024-12-02 15:47:56,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:47:56,452 INFO L225 Difference]: With dead ends: 57946 [2024-12-02 15:47:56,452 INFO L226 Difference]: Without dead ends: 34418 [2024-12-02 15:47:56,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-12-02 15:47:56,488 INFO L435 NwaCegarLoop]: 409 mSDtfsCounter, 203 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:47:56,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 2205 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:47:56,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34418 states. [2024-12-02 15:48:03,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34418 to 29990. [2024-12-02 15:48:03,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29990 states, 22152 states have (on average 1.2628205128205128) internal successors, (27974), 22392 states have internal predecessors, (27974), 4912 states have call successors, (4912), 2925 states have call predecessors, (4912), 2925 states have return successors, (4912), 4672 states have call predecessors, (4912), 4912 states have call successors, (4912) [2024-12-02 15:48:03,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29990 states to 29990 states and 37798 transitions. [2024-12-02 15:48:03,743 INFO L78 Accepts]: Start accepts. Automaton has 29990 states and 37798 transitions. Word has length 198 [2024-12-02 15:48:03,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:48:03,744 INFO L471 AbstractCegarLoop]: Abstraction has 29990 states and 37798 transitions. [2024-12-02 15:48:03,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 15:48:03,744 INFO L276 IsEmpty]: Start isEmpty. Operand 29990 states and 37798 transitions. [2024-12-02 15:48:03,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-12-02 15:48:03,749 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:48:03,749 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:48:03,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-12-02 15:48:03,749 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:48:03,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:48:03,750 INFO L85 PathProgramCache]: Analyzing trace with hash -985204431, now seen corresponding path program 1 times [2024-12-02 15:48:03,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:48:03,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176419183] [2024-12-02 15:48:03,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:48:03,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:48:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:48:03,844 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-12-02 15:48:03,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:48:03,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176419183] [2024-12-02 15:48:03,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176419183] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:48:03,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:48:03,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:48:03,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075156296] [2024-12-02 15:48:03,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:48:03,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:48:03,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:48:03,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:48:03,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:48:03,845 INFO L87 Difference]: Start difference. First operand 29990 states and 37798 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 15:48:11,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:48:11,395 INFO L93 Difference]: Finished difference Result 63065 states and 79702 transitions. [2024-12-02 15:48:11,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:48:11,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 198 [2024-12-02 15:48:11,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:48:11,513 INFO L225 Difference]: With dead ends: 63065 [2024-12-02 15:48:11,513 INFO L226 Difference]: Without dead ends: 33365 [2024-12-02 15:48:11,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:48:11,556 INFO L435 NwaCegarLoop]: 427 mSDtfsCounter, 210 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:48:11,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 1089 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:48:11,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33365 states. [2024-12-02 15:48:18,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33365 to 29817. [2024-12-02 15:48:18,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29817 states, 22019 states have (on average 1.2614560152595486) internal successors, (27776), 22257 states have internal predecessors, (27776), 4886 states have call successors, (4886), 2911 states have call predecessors, (4886), 2911 states have return successors, (4886), 4648 states have call predecessors, (4886), 4886 states have call successors, (4886) [2024-12-02 15:48:18,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29817 states to 29817 states and 37548 transitions. [2024-12-02 15:48:18,921 INFO L78 Accepts]: Start accepts. Automaton has 29817 states and 37548 transitions. Word has length 198 [2024-12-02 15:48:18,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:48:18,921 INFO L471 AbstractCegarLoop]: Abstraction has 29817 states and 37548 transitions. [2024-12-02 15:48:18,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 15:48:18,921 INFO L276 IsEmpty]: Start isEmpty. Operand 29817 states and 37548 transitions. [2024-12-02 15:48:18,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-12-02 15:48:18,924 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:48:18,925 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:48:18,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-12-02 15:48:18,925 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:48:18,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:48:18,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1910880445, now seen corresponding path program 1 times [2024-12-02 15:48:18,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:48:18,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24007516] [2024-12-02 15:48:18,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:48:18,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:48:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:48:19,382 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 15:48:19,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:48:19,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24007516] [2024-12-02 15:48:19,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24007516] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:48:19,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051125605] [2024-12-02 15:48:19,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:48:19,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:48:19,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:48:19,384 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:48:19,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 15:48:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:48:19,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 15:48:19,625 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:48:20,185 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 86 proven. 14 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 15:48:20,185 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:48:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 15:48:20,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051125605] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:48:20,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:48:20,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 8] total 17 [2024-12-02 15:48:20,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856075991] [2024-12-02 15:48:20,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:48:20,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 15:48:20,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:48:20,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 15:48:20,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-12-02 15:48:20,602 INFO L87 Difference]: Start difference. First operand 29817 states and 37548 transitions. Second operand has 17 states, 17 states have (on average 17.88235294117647) internal successors, (304), 17 states have internal predecessors, (304), 10 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (48), 10 states have call predecessors, (48), 10 states have call successors, (48) [2024-12-02 15:48:28,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:48:28,767 INFO L93 Difference]: Finished difference Result 56478 states and 71031 transitions. [2024-12-02 15:48:28,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 15:48:28,767 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 17.88235294117647) internal successors, (304), 17 states have internal predecessors, (304), 10 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (48), 10 states have call predecessors, (48), 10 states have call successors, (48) Word has length 199 [2024-12-02 15:48:28,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:48:28,870 INFO L225 Difference]: With dead ends: 56478 [2024-12-02 15:48:28,870 INFO L226 Difference]: Without dead ends: 26940 [2024-12-02 15:48:28,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=348, Invalid=984, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 15:48:28,911 INFO L435 NwaCegarLoop]: 326 mSDtfsCounter, 2115 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 790 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2115 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 790 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:48:28,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2115 Valid, 1826 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [790 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:48:28,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26940 states. [2024-12-02 15:48:35,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26940 to 26696. [2024-12-02 15:48:35,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26696 states, 19776 states have (on average 1.2567253236245954) internal successors, (24853), 19986 states have internal predecessors, (24853), 4299 states have call successors, (4299), 2620 states have call predecessors, (4299), 2620 states have return successors, (4299), 4089 states have call predecessors, (4299), 4299 states have call successors, (4299) [2024-12-02 15:48:35,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26696 states to 26696 states and 33451 transitions. [2024-12-02 15:48:35,947 INFO L78 Accepts]: Start accepts. Automaton has 26696 states and 33451 transitions. Word has length 199 [2024-12-02 15:48:35,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:48:35,948 INFO L471 AbstractCegarLoop]: Abstraction has 26696 states and 33451 transitions. [2024-12-02 15:48:35,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.88235294117647) internal successors, (304), 17 states have internal predecessors, (304), 10 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (48), 10 states have call predecessors, (48), 10 states have call successors, (48) [2024-12-02 15:48:35,948 INFO L276 IsEmpty]: Start isEmpty. Operand 26696 states and 33451 transitions. [2024-12-02 15:48:35,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-12-02 15:48:35,951 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:48:35,951 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:48:35,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 15:48:36,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-12-02 15:48:36,152 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:48:36,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:48:36,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1998024560, now seen corresponding path program 1 times [2024-12-02 15:48:36,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:48:36,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916321811] [2024-12-02 15:48:36,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:48:36,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:48:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:48:36,444 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 14 proven. 34 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 15:48:36,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:48:36,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916321811] [2024-12-02 15:48:36,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916321811] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:48:36,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586687595] [2024-12-02 15:48:36,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:48:36,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:48:36,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:48:36,446 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:48:36,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 15:48:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:48:36,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 15:48:36,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:48:36,867 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 8 proven. 116 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 15:48:36,868 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:48:37,062 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 14 proven. 34 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 15:48:37,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586687595] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:48:37,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:48:37,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2024-12-02 15:48:37,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097581363] [2024-12-02 15:48:37,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:48:37,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 15:48:37,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:48:37,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 15:48:37,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 15:48:37,064 INFO L87 Difference]: Start difference. First operand 26696 states and 33451 transitions. Second operand has 10 states, 10 states have (on average 17.7) internal successors, (177), 9 states have internal predecessors, (177), 4 states have call successors, (38), 5 states have call predecessors, (38), 7 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) [2024-12-02 15:48:46,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:48:46,025 INFO L93 Difference]: Finished difference Result 60120 states and 74666 transitions. [2024-12-02 15:48:46,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 15:48:46,025 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.7) internal successors, (177), 9 states have internal predecessors, (177), 4 states have call successors, (38), 5 states have call predecessors, (38), 7 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) Word has length 202 [2024-12-02 15:48:46,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:48:46,132 INFO L225 Difference]: With dead ends: 60120 [2024-12-02 15:48:46,132 INFO L226 Difference]: Without dead ends: 33714 [2024-12-02 15:48:46,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 400 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-12-02 15:48:46,168 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 314 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:48:46,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 1952 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:48:46,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33714 states. [2024-12-02 15:48:54,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33714 to 29599. [2024-12-02 15:48:54,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29599 states, 21981 states have (on average 1.241526773122242) internal successors, (27290), 22203 states have internal predecessors, (27290), 4671 states have call successors, (4671), 2946 states have call predecessors, (4671), 2946 states have return successors, (4671), 4449 states have call predecessors, (4671), 4671 states have call successors, (4671) [2024-12-02 15:48:54,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29599 states to 29599 states and 36632 transitions. [2024-12-02 15:48:54,168 INFO L78 Accepts]: Start accepts. Automaton has 29599 states and 36632 transitions. Word has length 202 [2024-12-02 15:48:54,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:48:54,168 INFO L471 AbstractCegarLoop]: Abstraction has 29599 states and 36632 transitions. [2024-12-02 15:48:54,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.7) internal successors, (177), 9 states have internal predecessors, (177), 4 states have call successors, (38), 5 states have call predecessors, (38), 7 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) [2024-12-02 15:48:54,169 INFO L276 IsEmpty]: Start isEmpty. Operand 29599 states and 36632 transitions. [2024-12-02 15:48:54,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-12-02 15:48:54,171 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:48:54,171 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:48:54,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 15:48:54,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-12-02 15:48:54,372 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:48:54,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:48:54,372 INFO L85 PathProgramCache]: Analyzing trace with hash 2017403174, now seen corresponding path program 1 times [2024-12-02 15:48:54,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:48:54,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602593513] [2024-12-02 15:48:54,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:48:54,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:48:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:48:54,996 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-12-02 15:48:54,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:48:54,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602593513] [2024-12-02 15:48:54,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602593513] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:48:54,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157433707] [2024-12-02 15:48:54,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:48:54,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:48:54,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:48:54,998 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:48:54,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 15:48:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:48:55,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 15:48:55,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:48:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 43 proven. 87 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 15:48:55,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:48:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-12-02 15:48:55,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157433707] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:48:55,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:48:55,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 8] total 23 [2024-12-02 15:48:55,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536815168] [2024-12-02 15:48:55,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:48:55,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 15:48:55,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:48:55,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 15:48:55,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2024-12-02 15:48:55,855 INFO L87 Difference]: Start difference. First operand 29599 states and 36632 transitions. Second operand has 23 states, 23 states have (on average 12.826086956521738) internal successors, (295), 20 states have internal predecessors, (295), 8 states have call successors, (47), 4 states have call predecessors, (47), 8 states have return successors, (47), 11 states have call predecessors, (47), 8 states have call successors, (47) [2024-12-02 15:49:05,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:49:05,103 INFO L93 Difference]: Finished difference Result 55658 states and 68914 transitions. [2024-12-02 15:49:05,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 15:49:05,104 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 12.826086956521738) internal successors, (295), 20 states have internal predecessors, (295), 8 states have call successors, (47), 4 states have call predecessors, (47), 8 states have return successors, (47), 11 states have call predecessors, (47), 8 states have call successors, (47) Word has length 204 [2024-12-02 15:49:05,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:49:05,208 INFO L225 Difference]: With dead ends: 55658 [2024-12-02 15:49:05,208 INFO L226 Difference]: Without dead ends: 29078 [2024-12-02 15:49:05,242 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=360, Invalid=1532, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 15:49:05,242 INFO L435 NwaCegarLoop]: 541 mSDtfsCounter, 1059 mSDsluCounter, 4836 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 5377 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 15:49:05,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1064 Valid, 5377 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 15:49:05,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29078 states. [2024-12-02 15:49:12,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29078 to 27901. [2024-12-02 15:49:12,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27901 states, 20774 states have (on average 1.2310099162414556) internal successors, (25573), 20988 states have internal predecessors, (25573), 4294 states have call successors, (4294), 2832 states have call predecessors, (4294), 2832 states have return successors, (4294), 4080 states have call predecessors, (4294), 4294 states have call successors, (4294) [2024-12-02 15:49:12,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27901 states to 27901 states and 34161 transitions. [2024-12-02 15:49:12,938 INFO L78 Accepts]: Start accepts. Automaton has 27901 states and 34161 transitions. Word has length 204 [2024-12-02 15:49:12,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:49:12,938 INFO L471 AbstractCegarLoop]: Abstraction has 27901 states and 34161 transitions. [2024-12-02 15:49:12,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.826086956521738) internal successors, (295), 20 states have internal predecessors, (295), 8 states have call successors, (47), 4 states have call predecessors, (47), 8 states have return successors, (47), 11 states have call predecessors, (47), 8 states have call successors, (47) [2024-12-02 15:49:12,939 INFO L276 IsEmpty]: Start isEmpty. Operand 27901 states and 34161 transitions. [2024-12-02 15:49:12,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-12-02 15:49:12,942 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:49:12,942 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:49:12,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 15:49:13,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-12-02 15:49:13,142 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:49:13,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:49:13,143 INFO L85 PathProgramCache]: Analyzing trace with hash 783216701, now seen corresponding path program 1 times [2024-12-02 15:49:13,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:49:13,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800691835] [2024-12-02 15:49:13,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:49:13,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:49:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:49:13,662 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 34 proven. 8 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-12-02 15:49:13,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:49:13,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800691835] [2024-12-02 15:49:13,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800691835] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:49:13,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908659970] [2024-12-02 15:49:13,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:49:13,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:49:13,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:49:13,664 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:49:13,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 15:49:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:49:13,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 15:49:13,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:49:14,151 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 33 proven. 85 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 15:49:14,151 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:49:14,415 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 17 proven. 25 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-12-02 15:49:14,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908659970] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:49:14,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:49:14,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 22 [2024-12-02 15:49:14,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625839304] [2024-12-02 15:49:14,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:49:14,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 15:49:14,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:49:14,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 15:49:14,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-12-02 15:49:14,416 INFO L87 Difference]: Start difference. First operand 27901 states and 34161 transitions. Second operand has 22 states, 22 states have (on average 13.772727272727273) internal successors, (303), 18 states have internal predecessors, (303), 6 states have call successors, (55), 4 states have call predecessors, (55), 8 states have return successors, (54), 10 states have call predecessors, (54), 6 states have call successors, (54) [2024-12-02 15:49:30,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:49:30,723 INFO L93 Difference]: Finished difference Result 76080 states and 93335 transitions. [2024-12-02 15:49:30,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-12-02 15:49:30,723 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 13.772727272727273) internal successors, (303), 18 states have internal predecessors, (303), 6 states have call successors, (55), 4 states have call predecessors, (55), 8 states have return successors, (54), 10 states have call predecessors, (54), 6 states have call successors, (54) Word has length 204 [2024-12-02 15:49:30,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:49:30,913 INFO L225 Difference]: With dead ends: 76080 [2024-12-02 15:49:30,913 INFO L226 Difference]: Without dead ends: 48786 [2024-12-02 15:49:30,962 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=575, Invalid=3085, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 15:49:30,963 INFO L435 NwaCegarLoop]: 634 mSDtfsCounter, 1074 mSDsluCounter, 7286 mSDsCounter, 0 mSdLazyCounter, 1725 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 7920 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:49:30,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1079 Valid, 7920 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1725 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 15:49:30,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48786 states. [2024-12-02 15:49:42,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48786 to 37047. [2024-12-02 15:49:42,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37047 states, 27507 states have (on average 1.2265968662522266) internal successors, (33740), 27824 states have internal predecessors, (33740), 5731 states have call successors, (5731), 3808 states have call predecessors, (5731), 3808 states have return successors, (5731), 5414 states have call predecessors, (5731), 5731 states have call successors, (5731) [2024-12-02 15:49:42,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37047 states to 37047 states and 45202 transitions. [2024-12-02 15:49:42,390 INFO L78 Accepts]: Start accepts. Automaton has 37047 states and 45202 transitions. Word has length 204 [2024-12-02 15:49:42,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:49:42,391 INFO L471 AbstractCegarLoop]: Abstraction has 37047 states and 45202 transitions. [2024-12-02 15:49:42,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 13.772727272727273) internal successors, (303), 18 states have internal predecessors, (303), 6 states have call successors, (55), 4 states have call predecessors, (55), 8 states have return successors, (54), 10 states have call predecessors, (54), 6 states have call successors, (54) [2024-12-02 15:49:42,391 INFO L276 IsEmpty]: Start isEmpty. Operand 37047 states and 45202 transitions. [2024-12-02 15:49:42,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-12-02 15:49:42,394 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:49:42,394 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:49:42,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 15:49:42,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-12-02 15:49:42,594 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:49:42,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:49:42,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1561851597, now seen corresponding path program 1 times [2024-12-02 15:49:42,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:49:42,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633440365] [2024-12-02 15:49:42,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:49:42,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:49:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:49:43,252 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-12-02 15:49:43,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:49:43,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633440365] [2024-12-02 15:49:43,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633440365] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:49:43,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852923438] [2024-12-02 15:49:43,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:49:43,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:49:43,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:49:43,254 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:49:43,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 15:49:43,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:49:43,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 15:49:43,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:49:43,747 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 127 proven. 4 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-12-02 15:49:43,747 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:49:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-12-02 15:49:44,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852923438] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 15:49:44,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 15:49:44,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 10] total 24 [2024-12-02 15:49:44,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000086391] [2024-12-02 15:49:44,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:49:44,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 15:49:44,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:49:44,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 15:49:44,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2024-12-02 15:49:44,045 INFO L87 Difference]: Start difference. First operand 37047 states and 45202 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 states have internal predecessors, (120), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 15:49:56,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:49:56,313 INFO L93 Difference]: Finished difference Result 70890 states and 86856 transitions. [2024-12-02 15:49:56,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:49:56,314 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 states have internal predecessors, (120), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 213 [2024-12-02 15:49:56,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:49:56,457 INFO L225 Difference]: With dead ends: 70890 [2024-12-02 15:49:56,457 INFO L226 Difference]: Without dead ends: 37076 [2024-12-02 15:49:56,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2024-12-02 15:49:56,503 INFO L435 NwaCegarLoop]: 351 mSDtfsCounter, 476 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:49:56,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 1478 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:49:56,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37076 states. [2024-12-02 15:50:07,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37076 to 36606. [2024-12-02 15:50:07,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36606 states, 27184 states have (on average 1.2243967039434962) internal successors, (33284), 27492 states have internal predecessors, (33284), 5662 states have call successors, (5662), 3759 states have call predecessors, (5662), 3759 states have return successors, (5662), 5354 states have call predecessors, (5662), 5662 states have call successors, (5662) [2024-12-02 15:50:08,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36606 states to 36606 states and 44608 transitions. [2024-12-02 15:50:08,097 INFO L78 Accepts]: Start accepts. Automaton has 36606 states and 44608 transitions. Word has length 213 [2024-12-02 15:50:08,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:50:08,097 INFO L471 AbstractCegarLoop]: Abstraction has 36606 states and 44608 transitions. [2024-12-02 15:50:08,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 states have internal predecessors, (120), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 15:50:08,097 INFO L276 IsEmpty]: Start isEmpty. Operand 36606 states and 44608 transitions. [2024-12-02 15:50:08,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-12-02 15:50:08,101 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:50:08,101 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:50:08,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 15:50:08,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-12-02 15:50:08,302 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:50:08,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:50:08,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1277192533, now seen corresponding path program 1 times [2024-12-02 15:50:08,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:50:08,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476803489] [2024-12-02 15:50:08,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:50:08,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:50:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:50:09,085 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-12-02 15:50:09,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:50:09,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476803489] [2024-12-02 15:50:09,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476803489] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:50:09,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126879411] [2024-12-02 15:50:09,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:50:09,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:50:09,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:50:09,087 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:50:09,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 15:50:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:50:09,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 15:50:09,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:50:09,631 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 4 proven. 137 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-12-02 15:50:09,631 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:50:09,912 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-12-02 15:50:09,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126879411] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:50:09,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:50:09,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 23 [2024-12-02 15:50:09,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778798583] [2024-12-02 15:50:09,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:50:09,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 15:50:09,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:50:09,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 15:50:09,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2024-12-02 15:50:09,914 INFO L87 Difference]: Start difference. First operand 36606 states and 44608 transitions. Second operand has 23 states, 23 states have (on average 11.956521739130435) internal successors, (275), 23 states have internal predecessors, (275), 10 states have call successors, (57), 6 states have call predecessors, (57), 6 states have return successors, (56), 9 states have call predecessors, (56), 9 states have call successors, (56) [2024-12-02 15:50:23,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:50:23,914 INFO L93 Difference]: Finished difference Result 72211 states and 88408 transitions. [2024-12-02 15:50:23,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-12-02 15:50:23,914 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 11.956521739130435) internal successors, (275), 23 states have internal predecessors, (275), 10 states have call successors, (57), 6 states have call predecessors, (57), 6 states have return successors, (56), 9 states have call predecessors, (56), 9 states have call successors, (56) Word has length 216 [2024-12-02 15:50:23,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:50:24,053 INFO L225 Difference]: With dead ends: 72211 [2024-12-02 15:50:24,054 INFO L226 Difference]: Without dead ends: 38764 [2024-12-02 15:50:24,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1860 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1224, Invalid=4938, Unknown=0, NotChecked=0, Total=6162 [2024-12-02 15:50:24,100 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 2849 mSDsluCounter, 3173 mSDsCounter, 0 mSdLazyCounter, 2376 mSolverCounterSat, 1016 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2849 SdHoareTripleChecker+Valid, 3635 SdHoareTripleChecker+Invalid, 3392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1016 IncrementalHoareTripleChecker+Valid, 2376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:50:24,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2849 Valid, 3635 Invalid, 3392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1016 Valid, 2376 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 15:50:24,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38764 states. [2024-12-02 15:50:34,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38764 to 36791. [2024-12-02 15:50:34,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36791 states, 27345 states have (on average 1.2210641799232036) internal successors, (33390), 27659 states have internal predecessors, (33390), 5661 states have call successors, (5661), 3784 states have call predecessors, (5661), 3784 states have return successors, (5661), 5347 states have call predecessors, (5661), 5661 states have call successors, (5661) [2024-12-02 15:50:34,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36791 states to 36791 states and 44712 transitions. [2024-12-02 15:50:35,042 INFO L78 Accepts]: Start accepts. Automaton has 36791 states and 44712 transitions. Word has length 216 [2024-12-02 15:50:35,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:50:35,043 INFO L471 AbstractCegarLoop]: Abstraction has 36791 states and 44712 transitions. [2024-12-02 15:50:35,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.956521739130435) internal successors, (275), 23 states have internal predecessors, (275), 10 states have call successors, (57), 6 states have call predecessors, (57), 6 states have return successors, (56), 9 states have call predecessors, (56), 9 states have call successors, (56) [2024-12-02 15:50:35,043 INFO L276 IsEmpty]: Start isEmpty. Operand 36791 states and 44712 transitions. [2024-12-02 15:50:35,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-12-02 15:50:35,046 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:50:35,047 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:50:35,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 15:50:35,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-12-02 15:50:35,247 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:50:35,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:50:35,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1068575861, now seen corresponding path program 1 times [2024-12-02 15:50:35,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:50:35,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61437200] [2024-12-02 15:50:35,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:50:35,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:50:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:50:35,982 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 47 proven. 8 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-12-02 15:50:35,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:50:35,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61437200] [2024-12-02 15:50:35,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61437200] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:50:35,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115994235] [2024-12-02 15:50:35,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:50:35,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:50:35,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:50:35,984 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:50:35,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 15:50:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:50:36,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-12-02 15:50:36,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:50:36,614 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 121 proven. 43 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 15:50:36,614 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:50:36,942 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 47 proven. 8 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-12-02 15:50:36,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115994235] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:50:36,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:50:36,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 11] total 28 [2024-12-02 15:50:36,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876641029] [2024-12-02 15:50:36,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:50:36,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 15:50:36,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:50:36,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 15:50:36,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2024-12-02 15:50:36,943 INFO L87 Difference]: Start difference. First operand 36791 states and 44712 transitions. Second operand has 28 states, 28 states have (on average 9.142857142857142) internal successors, (256), 23 states have internal predecessors, (256), 7 states have call successors, (40), 5 states have call predecessors, (40), 11 states have return successors, (41), 12 states have call predecessors, (41), 7 states have call successors, (41) [2024-12-02 15:51:01,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:51:01,338 INFO L93 Difference]: Finished difference Result 107154 states and 130297 transitions. [2024-12-02 15:51:01,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-12-02 15:51:01,338 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.142857142857142) internal successors, (256), 23 states have internal predecessors, (256), 7 states have call successors, (40), 5 states have call predecessors, (40), 11 states have return successors, (41), 12 states have call predecessors, (41), 7 states have call successors, (41) Word has length 219 [2024-12-02 15:51:01,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:51:01,571 INFO L225 Difference]: With dead ends: 107154 [2024-12-02 15:51:01,571 INFO L226 Difference]: Without dead ends: 72946 [2024-12-02 15:51:01,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=483, Invalid=3677, Unknown=0, NotChecked=0, Total=4160 [2024-12-02 15:51:01,623 INFO L435 NwaCegarLoop]: 484 mSDtfsCounter, 1794 mSDsluCounter, 5892 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 6376 SdHoareTripleChecker+Invalid, 2819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:51:01,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1803 Valid, 6376 Invalid, 2819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 2175 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 15:51:01,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72946 states. [2024-12-02 15:51:16,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72946 to 49729. [2024-12-02 15:51:16,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49729 states, 37024 states have (on average 1.2220451598962836) internal successors, (45245), 37485 states have internal predecessors, (45245), 7583 states have call successors, (7583), 5121 states have call predecessors, (7583), 5121 states have return successors, (7583), 7122 states have call predecessors, (7583), 7583 states have call successors, (7583) [2024-12-02 15:51:16,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49729 states to 49729 states and 60411 transitions. [2024-12-02 15:51:16,584 INFO L78 Accepts]: Start accepts. Automaton has 49729 states and 60411 transitions. Word has length 219 [2024-12-02 15:51:16,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:51:16,584 INFO L471 AbstractCegarLoop]: Abstraction has 49729 states and 60411 transitions. [2024-12-02 15:51:16,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.142857142857142) internal successors, (256), 23 states have internal predecessors, (256), 7 states have call successors, (40), 5 states have call predecessors, (40), 11 states have return successors, (41), 12 states have call predecessors, (41), 7 states have call successors, (41) [2024-12-02 15:51:16,584 INFO L276 IsEmpty]: Start isEmpty. Operand 49729 states and 60411 transitions. [2024-12-02 15:51:16,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-12-02 15:51:16,589 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:51:16,589 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:51:16,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 15:51:16,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:51:16,789 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:51:16,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:51:16,790 INFO L85 PathProgramCache]: Analyzing trace with hash -511725613, now seen corresponding path program 1 times [2024-12-02 15:51:16,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:51:16,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028493798] [2024-12-02 15:51:16,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:51:16,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:51:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:51:17,164 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-12-02 15:51:17,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:51:17,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028493798] [2024-12-02 15:51:17,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028493798] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:51:17,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543963044] [2024-12-02 15:51:17,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:51:17,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:51:17,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:51:17,166 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:51:17,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 15:51:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:51:17,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 15:51:17,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:51:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 130 proven. 11 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-12-02 15:51:17,782 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:51:18,111 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-12-02 15:51:18,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543963044] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:51:18,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:51:18,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2024-12-02 15:51:18,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107284916] [2024-12-02 15:51:18,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:51:18,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 15:51:18,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:51:18,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 15:51:18,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-12-02 15:51:18,112 INFO L87 Difference]: Start difference. First operand 49729 states and 60411 transitions. Second operand has 12 states, 12 states have (on average 21.666666666666668) internal successors, (260), 12 states have internal predecessors, (260), 7 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (45), 7 states have call predecessors, (45), 7 states have call successors, (45) [2024-12-02 15:51:33,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:51:33,063 INFO L93 Difference]: Finished difference Result 94533 states and 115497 transitions. [2024-12-02 15:51:33,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:51:33,063 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 21.666666666666668) internal successors, (260), 12 states have internal predecessors, (260), 7 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (45), 7 states have call predecessors, (45), 7 states have call successors, (45) Word has length 223 [2024-12-02 15:51:33,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:51:33,244 INFO L225 Difference]: With dead ends: 94533 [2024-12-02 15:51:33,244 INFO L226 Difference]: Without dead ends: 47782 [2024-12-02 15:51:33,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:51:33,313 INFO L435 NwaCegarLoop]: 273 mSDtfsCounter, 1023 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:51:33,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 1235 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:51:33,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47782 states. [2024-12-02 15:51:48,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47782 to 47753. [2024-12-02 15:51:48,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47753 states, 35510 states have (on average 1.225682906223599) internal successors, (43524), 35947 states have internal predecessors, (43524), 7338 states have call successors, (7338), 4904 states have call predecessors, (7338), 4904 states have return successors, (7338), 6901 states have call predecessors, (7338), 7338 states have call successors, (7338) [2024-12-02 15:51:48,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47753 states to 47753 states and 58200 transitions. [2024-12-02 15:51:48,453 INFO L78 Accepts]: Start accepts. Automaton has 47753 states and 58200 transitions. Word has length 223 [2024-12-02 15:51:48,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:51:48,454 INFO L471 AbstractCegarLoop]: Abstraction has 47753 states and 58200 transitions. [2024-12-02 15:51:48,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.666666666666668) internal successors, (260), 12 states have internal predecessors, (260), 7 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (45), 7 states have call predecessors, (45), 7 states have call successors, (45) [2024-12-02 15:51:48,454 INFO L276 IsEmpty]: Start isEmpty. Operand 47753 states and 58200 transitions. [2024-12-02 15:51:48,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-12-02 15:51:48,458 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:51:48,458 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:51:48,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-02 15:51:48,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:51:48,659 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:51:48,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:51:48,659 INFO L85 PathProgramCache]: Analyzing trace with hash -2074366888, now seen corresponding path program 1 times [2024-12-02 15:51:48,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:51:48,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350400585] [2024-12-02 15:51:48,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:51:48,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:51:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:51:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 4 proven. 41 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-12-02 15:51:49,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:51:49,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350400585] [2024-12-02 15:51:49,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350400585] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:51:49,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21104183] [2024-12-02 15:51:49,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:51:49,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:51:49,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:51:49,107 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:51:49,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 15:51:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:51:49,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 929 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-12-02 15:51:49,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:51:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 8 proven. 127 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 15:51:50,198 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:51:52,574 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 4 proven. 41 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-12-02 15:51:52,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21104183] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:51:52,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:51:52,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16, 13] total 30 [2024-12-02 15:51:52,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385720379] [2024-12-02 15:51:52,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:51:52,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 15:51:52,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:51:52,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 15:51:52,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=718, Unknown=0, NotChecked=0, Total=870 [2024-12-02 15:51:52,576 INFO L87 Difference]: Start difference. First operand 47753 states and 58200 transitions. Second operand has 30 states, 30 states have (on average 11.733333333333333) internal successors, (352), 30 states have internal predecessors, (352), 11 states have call successors, (54), 6 states have call predecessors, (54), 6 states have return successors, (53), 10 states have call predecessors, (53), 10 states have call successors, (53) [2024-12-02 15:52:16,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:52:16,563 INFO L93 Difference]: Finished difference Result 110649 states and 135622 transitions. [2024-12-02 15:52:16,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-12-02 15:52:16,564 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 11.733333333333333) internal successors, (352), 30 states have internal predecessors, (352), 11 states have call successors, (54), 6 states have call predecessors, (54), 6 states have return successors, (53), 10 states have call predecessors, (53), 10 states have call successors, (53) Word has length 223 [2024-12-02 15:52:16,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:52:16,789 INFO L225 Difference]: With dead ends: 110649 [2024-12-02 15:52:16,789 INFO L226 Difference]: Without dead ends: 65990 [2024-12-02 15:52:16,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4214 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2183, Invalid=10473, Unknown=0, NotChecked=0, Total=12656 [2024-12-02 15:52:16,852 INFO L435 NwaCegarLoop]: 586 mSDtfsCounter, 4126 mSDsluCounter, 4483 mSDsCounter, 0 mSdLazyCounter, 3162 mSolverCounterSat, 1318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4126 SdHoareTripleChecker+Valid, 5069 SdHoareTripleChecker+Invalid, 4480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1318 IncrementalHoareTripleChecker+Valid, 3162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:52:16,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4126 Valid, 5069 Invalid, 4480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1318 Valid, 3162 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-02 15:52:16,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65990 states. [2024-12-02 15:52:34,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65990 to 56864. [2024-12-02 15:52:34,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56864 states, 42229 states have (on average 1.2274740107509057) internal successors, (51835), 42757 states have internal predecessors, (51835), 8793 states have call successors, (8793), 5841 states have call predecessors, (8793), 5841 states have return successors, (8793), 8265 states have call predecessors, (8793), 8793 states have call successors, (8793) [2024-12-02 15:52:34,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56864 states to 56864 states and 69421 transitions. [2024-12-02 15:52:34,323 INFO L78 Accepts]: Start accepts. Automaton has 56864 states and 69421 transitions. Word has length 223 [2024-12-02 15:52:34,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:52:34,323 INFO L471 AbstractCegarLoop]: Abstraction has 56864 states and 69421 transitions. [2024-12-02 15:52:34,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 11.733333333333333) internal successors, (352), 30 states have internal predecessors, (352), 11 states have call successors, (54), 6 states have call predecessors, (54), 6 states have return successors, (53), 10 states have call predecessors, (53), 10 states have call successors, (53) [2024-12-02 15:52:34,323 INFO L276 IsEmpty]: Start isEmpty. Operand 56864 states and 69421 transitions. [2024-12-02 15:52:34,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-12-02 15:52:34,329 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:52:34,329 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:52:34,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-12-02 15:52:34,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:52:34,530 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:52:34,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:52:34,530 INFO L85 PathProgramCache]: Analyzing trace with hash -336887570, now seen corresponding path program 1 times [2024-12-02 15:52:34,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:52:34,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302711014] [2024-12-02 15:52:34,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:52:34,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:52:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:52:35,261 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2024-12-02 15:52:35,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:52:35,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302711014] [2024-12-02 15:52:35,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302711014] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:52:35,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521541372] [2024-12-02 15:52:35,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:52:35,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:52:35,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:52:35,262 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:52:35,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-02 15:52:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:52:35,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 15:52:35,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:52:35,836 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 49 proven. 100 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-12-02 15:52:35,836 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:52:36,143 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 19 proven. 23 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-12-02 15:52:36,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521541372] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:52:36,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:52:36,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 9] total 24 [2024-12-02 15:52:36,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064098489] [2024-12-02 15:52:36,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:52:36,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 15:52:36,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:52:36,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 15:52:36,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2024-12-02 15:52:36,145 INFO L87 Difference]: Start difference. First operand 56864 states and 69421 transitions. Second operand has 24 states, 24 states have (on average 14.083333333333334) internal successors, (338), 21 states have internal predecessors, (338), 8 states have call successors, (61), 5 states have call predecessors, (61), 9 states have return successors, (60), 11 states have call predecessors, (60), 8 states have call successors, (60) [2024-12-02 15:52:50,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:52:50,171 INFO L93 Difference]: Finished difference Result 94276 states and 114894 transitions. [2024-12-02 15:52:50,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-12-02 15:52:50,172 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 14.083333333333334) internal successors, (338), 21 states have internal predecessors, (338), 8 states have call successors, (61), 5 states have call predecessors, (61), 9 states have return successors, (60), 11 states have call predecessors, (60), 8 states have call successors, (60) Word has length 225 [2024-12-02 15:52:50,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:52:50,341 INFO L225 Difference]: With dead ends: 94276 [2024-12-02 15:52:50,341 INFO L226 Difference]: Without dead ends: 37861 [2024-12-02 15:52:50,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=483, Invalid=2067, Unknown=0, NotChecked=0, Total=2550 [2024-12-02 15:52:50,407 INFO L435 NwaCegarLoop]: 463 mSDtfsCounter, 1172 mSDsluCounter, 4862 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 5325 SdHoareTripleChecker+Invalid, 2699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:52:50,408 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 5325 Invalid, 2699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 15:52:50,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37861 states. [2024-12-02 15:52:59,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37861 to 29821. [2024-12-02 15:52:59,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29821 states, 22281 states have (on average 1.2213096360127462) internal successors, (27212), 22517 states have internal predecessors, (27212), 4545 states have call successors, (4545), 2994 states have call predecessors, (4545), 2994 states have return successors, (4545), 4309 states have call predecessors, (4545), 4545 states have call successors, (4545) [2024-12-02 15:52:59,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29821 states to 29821 states and 36302 transitions. [2024-12-02 15:52:59,603 INFO L78 Accepts]: Start accepts. Automaton has 29821 states and 36302 transitions. Word has length 225 [2024-12-02 15:52:59,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:52:59,604 INFO L471 AbstractCegarLoop]: Abstraction has 29821 states and 36302 transitions. [2024-12-02 15:52:59,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 14.083333333333334) internal successors, (338), 21 states have internal predecessors, (338), 8 states have call successors, (61), 5 states have call predecessors, (61), 9 states have return successors, (60), 11 states have call predecessors, (60), 8 states have call successors, (60) [2024-12-02 15:52:59,604 INFO L276 IsEmpty]: Start isEmpty. Operand 29821 states and 36302 transitions. [2024-12-02 15:52:59,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-12-02 15:52:59,608 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:52:59,608 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:52:59,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-12-02 15:52:59,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:52:59,808 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:52:59,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:52:59,809 INFO L85 PathProgramCache]: Analyzing trace with hash -855848715, now seen corresponding path program 1 times [2024-12-02 15:52:59,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:52:59,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092144697] [2024-12-02 15:52:59,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:52:59,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:52:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:00,287 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-12-02 15:53:00,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:00,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092144697] [2024-12-02 15:53:00,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092144697] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:53:00,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24713601] [2024-12-02 15:53:00,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:00,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:00,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:53:00,288 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:53:00,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-12-02 15:53:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:00,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-02 15:53:00,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:53:00,808 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 109 proven. 18 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-12-02 15:53:00,808 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:53:01,067 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 15:53:01,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24713601] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 15:53:01,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 15:53:01,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14, 12] total 30 [2024-12-02 15:53:01,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890046078] [2024-12-02 15:53:01,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:01,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 15:53:01,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:01,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 15:53:01,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=791, Unknown=0, NotChecked=0, Total=870 [2024-12-02 15:53:01,069 INFO L87 Difference]: Start difference. First operand 29821 states and 36302 transitions. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 8 states have internal predecessors, (134), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 15:53:13,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:13,016 INFO L93 Difference]: Finished difference Result 66165 states and 81140 transitions. [2024-12-02 15:53:13,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 15:53:13,017 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 8 states have internal predecessors, (134), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 228 [2024-12-02 15:53:13,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:13,192 INFO L225 Difference]: With dead ends: 66165 [2024-12-02 15:53:13,192 INFO L226 Difference]: Without dead ends: 38710 [2024-12-02 15:53:13,232 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=1279, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 15:53:13,232 INFO L435 NwaCegarLoop]: 470 mSDtfsCounter, 350 mSDsluCounter, 2488 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 2958 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:13,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 2958 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:53:13,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38710 states. [2024-12-02 15:53:23,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38710 to 33323. [2024-12-02 15:53:23,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33323 states, 24862 states have (on average 1.2217440270292013) internal successors, (30375), 25131 states have internal predecessors, (30375), 5110 states have call successors, (5110), 3350 states have call predecessors, (5110), 3350 states have return successors, (5110), 4841 states have call predecessors, (5110), 5110 states have call successors, (5110) [2024-12-02 15:53:23,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33323 states to 33323 states and 40595 transitions. [2024-12-02 15:53:23,947 INFO L78 Accepts]: Start accepts. Automaton has 33323 states and 40595 transitions. Word has length 228 [2024-12-02 15:53:23,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:23,948 INFO L471 AbstractCegarLoop]: Abstraction has 33323 states and 40595 transitions. [2024-12-02 15:53:23,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 8 states have internal predecessors, (134), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 15:53:23,948 INFO L276 IsEmpty]: Start isEmpty. Operand 33323 states and 40595 transitions. [2024-12-02 15:53:23,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-12-02 15:53:23,952 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:23,952 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:23,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-12-02 15:53:24,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-12-02 15:53:24,153 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:24,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:24,153 INFO L85 PathProgramCache]: Analyzing trace with hash -115992240, now seen corresponding path program 1 times [2024-12-02 15:53:24,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:24,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537534131] [2024-12-02 15:53:24,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:24,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:24,619 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 20 proven. 25 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-12-02 15:53:24,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:24,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537534131] [2024-12-02 15:53:24,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537534131] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:53:24,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353988603] [2024-12-02 15:53:24,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:24,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:24,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:53:24,621 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:53:24,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-12-02 15:53:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:24,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 15:53:24,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:53:26,392 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 113 proven. 20 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 15:53:26,392 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:53:27,140 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 20 proven. 25 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-12-02 15:53:27,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353988603] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:53:27,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:53:27,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 14] total 33 [2024-12-02 15:53:27,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554374421] [2024-12-02 15:53:27,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:53:27,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-12-02 15:53:27,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:27,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-12-02 15:53:27,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 15:53:27,142 INFO L87 Difference]: Start difference. First operand 33323 states and 40595 transitions. Second operand has 33 states, 33 states have (on average 11.909090909090908) internal successors, (393), 31 states have internal predecessors, (393), 14 states have call successors, (60), 6 states have call predecessors, (60), 8 states have return successors, (59), 16 states have call predecessors, (59), 14 states have call successors, (59) [2024-12-02 15:53:40,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:40,533 INFO L93 Difference]: Finished difference Result 64177 states and 78645 transitions. [2024-12-02 15:53:40,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 15:53:40,533 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 11.909090909090908) internal successors, (393), 31 states have internal predecessors, (393), 14 states have call successors, (60), 6 states have call predecessors, (60), 8 states have return successors, (59), 16 states have call predecessors, (59), 14 states have call successors, (59) Word has length 230 [2024-12-02 15:53:40,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:40,690 INFO L225 Difference]: With dead ends: 64177 [2024-12-02 15:53:40,690 INFO L226 Difference]: Without dead ends: 32992 [2024-12-02 15:53:40,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=476, Invalid=2494, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 15:53:40,728 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 1192 mSDsluCounter, 4391 mSDsCounter, 0 mSdLazyCounter, 2174 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 4819 SdHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 2174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:40,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 4819 Invalid, 2518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 2174 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 15:53:40,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32992 states. [2024-12-02 15:53:51,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32992 to 31036. [2024-12-02 15:53:51,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31036 states, 23191 states have (on average 1.221853305161485) internal successors, (28336), 23438 states have internal predecessors, (28336), 4727 states have call successors, (4727), 3117 states have call predecessors, (4727), 3117 states have return successors, (4727), 4480 states have call predecessors, (4727), 4727 states have call successors, (4727) [2024-12-02 15:53:51,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31036 states to 31036 states and 37790 transitions. [2024-12-02 15:53:51,370 INFO L78 Accepts]: Start accepts. Automaton has 31036 states and 37790 transitions. Word has length 230 [2024-12-02 15:53:51,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:51,371 INFO L471 AbstractCegarLoop]: Abstraction has 31036 states and 37790 transitions. [2024-12-02 15:53:51,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 11.909090909090908) internal successors, (393), 31 states have internal predecessors, (393), 14 states have call successors, (60), 6 states have call predecessors, (60), 8 states have return successors, (59), 16 states have call predecessors, (59), 14 states have call successors, (59) [2024-12-02 15:53:51,371 INFO L276 IsEmpty]: Start isEmpty. Operand 31036 states and 37790 transitions. [2024-12-02 15:53:51,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-12-02 15:53:51,375 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:51,375 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:51,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-12-02 15:53:51,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:51,575 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:51,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:51,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2061570943, now seen corresponding path program 1 times [2024-12-02 15:53:51,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:51,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239553800] [2024-12-02 15:53:51,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:51,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:51,941 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 33 proven. 12 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-12-02 15:53:51,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:51,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239553800] [2024-12-02 15:53:51,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239553800] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:53:51,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713136949] [2024-12-02 15:53:51,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:51,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:51,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:53:51,942 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:53:51,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-12-02 15:53:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:52,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-12-02 15:53:52,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:53:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 115 proven. 20 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 15:53:52,455 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:53:52,717 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 31 proven. 14 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-12-02 15:53:52,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713136949] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:53:52,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:53:52,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 11] total 24 [2024-12-02 15:53:52,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743117062] [2024-12-02 15:53:52,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:53:52,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 15:53:52,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:52,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 15:53:52,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2024-12-02 15:53:52,719 INFO L87 Difference]: Start difference. First operand 31036 states and 37790 transitions. Second operand has 24 states, 24 states have (on average 12.958333333333334) internal successors, (311), 23 states have internal predecessors, (311), 10 states have call successors, (44), 5 states have call predecessors, (44), 7 states have return successors, (44), 9 states have call predecessors, (44), 10 states have call successors, (44) [2024-12-02 15:54:04,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:54:04,927 INFO L93 Difference]: Finished difference Result 62096 states and 75826 transitions. [2024-12-02 15:54:04,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-12-02 15:54:04,927 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 12.958333333333334) internal successors, (311), 23 states have internal predecessors, (311), 10 states have call successors, (44), 5 states have call predecessors, (44), 7 states have return successors, (44), 9 states have call predecessors, (44), 10 states have call successors, (44) Word has length 230 [2024-12-02 15:54:04,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:54:05,105 INFO L225 Difference]: With dead ends: 62096 [2024-12-02 15:54:05,105 INFO L226 Difference]: Without dead ends: 32762 [2024-12-02 15:54:05,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=374, Invalid=1788, Unknown=0, NotChecked=0, Total=2162 [2024-12-02 15:54:05,143 INFO L435 NwaCegarLoop]: 399 mSDtfsCounter, 729 mSDsluCounter, 3386 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 3785 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:54:05,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 3785 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:54:05,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32762 states. [2024-12-02 15:54:16,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32762 to 32048. [2024-12-02 15:54:16,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32048 states, 23968 states have (on average 1.2197513351134845) internal successors, (29235), 24259 states have internal predecessors, (29235), 4859 states have call successors, (4859), 3203 states have call predecessors, (4859), 3220 states have return successors, (4876), 4585 states have call predecessors, (4876), 4859 states have call successors, (4876) [2024-12-02 15:54:16,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32048 states to 32048 states and 38970 transitions. [2024-12-02 15:54:16,239 INFO L78 Accepts]: Start accepts. Automaton has 32048 states and 38970 transitions. Word has length 230 [2024-12-02 15:54:16,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:54:16,239 INFO L471 AbstractCegarLoop]: Abstraction has 32048 states and 38970 transitions. [2024-12-02 15:54:16,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 12.958333333333334) internal successors, (311), 23 states have internal predecessors, (311), 10 states have call successors, (44), 5 states have call predecessors, (44), 7 states have return successors, (44), 9 states have call predecessors, (44), 10 states have call successors, (44) [2024-12-02 15:54:16,240 INFO L276 IsEmpty]: Start isEmpty. Operand 32048 states and 38970 transitions. [2024-12-02 15:54:16,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-12-02 15:54:16,244 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:54:16,244 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:54:16,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-12-02 15:54:16,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:54:16,445 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:54:16,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:54:16,445 INFO L85 PathProgramCache]: Analyzing trace with hash -153113153, now seen corresponding path program 1 times [2024-12-02 15:54:16,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:54:16,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083130122] [2024-12-02 15:54:16,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:54:16,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:54:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:54:16,930 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 22 proven. 25 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-12-02 15:54:16,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:54:16,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083130122] [2024-12-02 15:54:16,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083130122] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:54:16,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648295948] [2024-12-02 15:54:16,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:54:16,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:54:16,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:54:16,932 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:54:16,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-12-02 15:54:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:54:17,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 15:54:17,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:54:18,645 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 119 proven. 16 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 15:54:18,645 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:54:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 33 proven. 12 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-12-02 15:54:19,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648295948] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:54:19,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:54:19,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 25 [2024-12-02 15:54:19,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239076646] [2024-12-02 15:54:19,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:54:19,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 15:54:19,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:54:19,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 15:54:19,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2024-12-02 15:54:19,158 INFO L87 Difference]: Start difference. First operand 32048 states and 38970 transitions. Second operand has 25 states, 25 states have (on average 14.48) internal successors, (362), 24 states have internal predecessors, (362), 10 states have call successors, (59), 4 states have call predecessors, (59), 5 states have return successors, (58), 11 states have call predecessors, (58), 10 states have call successors, (58) [2024-12-02 15:54:32,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:54:32,877 INFO L93 Difference]: Finished difference Result 62479 states and 76298 transitions. [2024-12-02 15:54:32,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 15:54:32,878 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 14.48) internal successors, (362), 24 states have internal predecessors, (362), 10 states have call successors, (59), 4 states have call predecessors, (59), 5 states have return successors, (58), 11 states have call predecessors, (58), 10 states have call successors, (58) Word has length 230 [2024-12-02 15:54:32,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:54:33,084 INFO L225 Difference]: With dead ends: 62479 [2024-12-02 15:54:33,085 INFO L226 Difference]: Without dead ends: 32383 [2024-12-02 15:54:33,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=336, Invalid=1734, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 15:54:33,135 INFO L435 NwaCegarLoop]: 432 mSDtfsCounter, 1093 mSDsluCounter, 4537 mSDsCounter, 0 mSdLazyCounter, 2323 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 4969 SdHoareTripleChecker+Invalid, 2683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 2323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:54:33,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 4969 Invalid, 2683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 2323 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 15:54:33,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32383 states. [2024-12-02 15:54:44,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32383 to 30009. [2024-12-02 15:54:44,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30009 states, 22506 states have (on average 1.2162090109304187) internal successors, (27372), 22775 states have internal predecessors, (27372), 4491 states have call successors, (4491), 2998 states have call predecessors, (4491), 3011 states have return successors, (4504), 4235 states have call predecessors, (4504), 4491 states have call successors, (4504) [2024-12-02 15:54:44,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30009 states to 30009 states and 36367 transitions. [2024-12-02 15:54:44,240 INFO L78 Accepts]: Start accepts. Automaton has 30009 states and 36367 transitions. Word has length 230 [2024-12-02 15:54:44,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:54:44,240 INFO L471 AbstractCegarLoop]: Abstraction has 30009 states and 36367 transitions. [2024-12-02 15:54:44,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 14.48) internal successors, (362), 24 states have internal predecessors, (362), 10 states have call successors, (59), 4 states have call predecessors, (59), 5 states have return successors, (58), 11 states have call predecessors, (58), 10 states have call successors, (58) [2024-12-02 15:54:44,240 INFO L276 IsEmpty]: Start isEmpty. Operand 30009 states and 36367 transitions. [2024-12-02 15:54:44,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-12-02 15:54:44,252 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:54:44,252 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:54:44,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-12-02 15:54:44,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:54:44,453 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:54:44,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:54:44,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1856903987, now seen corresponding path program 1 times [2024-12-02 15:54:44,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:54:44,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344350011] [2024-12-02 15:54:44,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:54:44,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:54:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:54:45,137 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 61 proven. 47 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2024-12-02 15:54:45,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:54:45,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344350011] [2024-12-02 15:54:45,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344350011] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:54:45,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001070296] [2024-12-02 15:54:45,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:54:45,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:54:45,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:54:45,139 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:54:45,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-12-02 15:54:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:54:45,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 15:54:45,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:54:45,835 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 139 proven. 152 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 15:54:45,835 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:54:46,098 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 75 proven. 33 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2024-12-02 15:54:46,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001070296] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:54:46,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:54:46,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 7] total 21 [2024-12-02 15:54:46,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614120460] [2024-12-02 15:54:46,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:54:46,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 15:54:46,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:54:46,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 15:54:46,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2024-12-02 15:54:46,100 INFO L87 Difference]: Start difference. First operand 30009 states and 36367 transitions. Second operand has 21 states, 21 states have (on average 19.476190476190474) internal successors, (409), 21 states have internal predecessors, (409), 11 states have call successors, (71), 6 states have call predecessors, (71), 7 states have return successors, (70), 11 states have call predecessors, (70), 11 states have call successors, (70) [2024-12-02 15:54:59,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:54:59,128 INFO L93 Difference]: Finished difference Result 58495 states and 71127 transitions. [2024-12-02 15:54:59,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-12-02 15:54:59,128 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 19.476190476190474) internal successors, (409), 21 states have internal predecessors, (409), 11 states have call successors, (71), 6 states have call predecessors, (71), 7 states have return successors, (70), 11 states have call predecessors, (70), 11 states have call successors, (70) Word has length 271 [2024-12-02 15:54:59,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:54:59,293 INFO L225 Difference]: With dead ends: 58495 [2024-12-02 15:54:59,293 INFO L226 Difference]: Without dead ends: 30600 [2024-12-02 15:54:59,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=649, Invalid=3383, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 15:54:59,331 INFO L435 NwaCegarLoop]: 494 mSDtfsCounter, 917 mSDsluCounter, 4643 mSDsCounter, 0 mSdLazyCounter, 2532 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 5137 SdHoareTripleChecker+Invalid, 2823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 2532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:54:59,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 5137 Invalid, 2823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 2532 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 15:54:59,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30600 states. [2024-12-02 15:55:10,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30600 to 29978. [2024-12-02 15:55:10,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29978 states, 22471 states have (on average 1.2134751457434025) internal successors, (27268), 22750 states have internal predecessors, (27268), 4493 states have call successors, (4493), 2998 states have call predecessors, (4493), 3013 states have return successors, (4508), 4229 states have call predecessors, (4508), 4493 states have call successors, (4508) [2024-12-02 15:55:10,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29978 states to 29978 states and 36269 transitions. [2024-12-02 15:55:10,359 INFO L78 Accepts]: Start accepts. Automaton has 29978 states and 36269 transitions. Word has length 271 [2024-12-02 15:55:10,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:55:10,359 INFO L471 AbstractCegarLoop]: Abstraction has 29978 states and 36269 transitions. [2024-12-02 15:55:10,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 19.476190476190474) internal successors, (409), 21 states have internal predecessors, (409), 11 states have call successors, (71), 6 states have call predecessors, (71), 7 states have return successors, (70), 11 states have call predecessors, (70), 11 states have call successors, (70) [2024-12-02 15:55:10,360 INFO L276 IsEmpty]: Start isEmpty. Operand 29978 states and 36269 transitions. [2024-12-02 15:55:10,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-12-02 15:55:10,370 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:55:10,370 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:55:10,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-12-02 15:55:10,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-12-02 15:55:10,571 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:55:10,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:55:10,571 INFO L85 PathProgramCache]: Analyzing trace with hash 310794492, now seen corresponding path program 1 times [2024-12-02 15:55:10,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:55:10,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999602340] [2024-12-02 15:55:10,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:55:10,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:55:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:55:10,925 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 39 proven. 68 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-12-02 15:55:10,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:55:10,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999602340] [2024-12-02 15:55:10,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999602340] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:55:10,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491543188] [2024-12-02 15:55:10,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:55:10,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:55:10,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:55:10,927 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:55:10,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-12-02 15:55:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:55:11,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 15:55:11,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:55:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 153 proven. 162 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-12-02 15:55:11,865 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:55:12,252 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 39 proven. 68 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-12-02 15:55:12,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491543188] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:55:12,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:55:12,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 11] total 20 [2024-12-02 15:55:12,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824772411] [2024-12-02 15:55:12,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:55:12,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 15:55:12,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:55:12,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 15:55:12,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-12-02 15:55:12,254 INFO L87 Difference]: Start difference. First operand 29978 states and 36269 transitions. Second operand has 20 states, 20 states have (on average 19.6) internal successors, (392), 20 states have internal predecessors, (392), 12 states have call successors, (65), 6 states have call predecessors, (65), 6 states have return successors, (64), 12 states have call predecessors, (64), 12 states have call successors, (64) [2024-12-02 15:55:24,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:55:24,020 INFO L93 Difference]: Finished difference Result 57738 states and 70141 transitions. [2024-12-02 15:55:24,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 15:55:24,021 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 19.6) internal successors, (392), 20 states have internal predecessors, (392), 12 states have call successors, (65), 6 states have call predecessors, (65), 6 states have return successors, (64), 12 states have call predecessors, (64), 12 states have call successors, (64) Word has length 274 [2024-12-02 15:55:24,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:55:24,194 INFO L225 Difference]: With dead ends: 57738 [2024-12-02 15:55:24,194 INFO L226 Difference]: Without dead ends: 29874 [2024-12-02 15:55:24,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=593, Invalid=1663, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 15:55:24,232 INFO L435 NwaCegarLoop]: 417 mSDtfsCounter, 2944 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 961 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2944 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 961 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:55:24,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2944 Valid, 1948 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [961 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 15:55:24,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29874 states. [2024-12-02 15:55:34,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29874 to 29536. [2024-12-02 15:55:34,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29536 states, 22144 states have (on average 1.2102149566473988) internal successors, (26799), 22417 states have internal predecessors, (26799), 4424 states have call successors, (4424), 2953 states have call predecessors, (4424), 2967 states have return successors, (4438), 4165 states have call predecessors, (4438), 4424 states have call successors, (4438) [2024-12-02 15:55:35,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29536 states to 29536 states and 35661 transitions. [2024-12-02 15:55:35,141 INFO L78 Accepts]: Start accepts. Automaton has 29536 states and 35661 transitions. Word has length 274 [2024-12-02 15:55:35,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:55:35,141 INFO L471 AbstractCegarLoop]: Abstraction has 29536 states and 35661 transitions. [2024-12-02 15:55:35,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.6) internal successors, (392), 20 states have internal predecessors, (392), 12 states have call successors, (65), 6 states have call predecessors, (65), 6 states have return successors, (64), 12 states have call predecessors, (64), 12 states have call successors, (64) [2024-12-02 15:55:35,141 INFO L276 IsEmpty]: Start isEmpty. Operand 29536 states and 35661 transitions. [2024-12-02 15:55:35,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-12-02 15:55:35,152 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:55:35,152 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:55:35,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-12-02 15:55:35,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-12-02 15:55:35,353 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:55:35,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:55:35,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1782866802, now seen corresponding path program 1 times [2024-12-02 15:55:35,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:55:35,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471395015] [2024-12-02 15:55:35,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:55:35,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:55:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:55:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 69 proven. 42 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-12-02 15:55:36,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:55:36,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471395015] [2024-12-02 15:55:36,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471395015] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:55:36,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142819712] [2024-12-02 15:55:36,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:55:36,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:55:36,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:55:36,146 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:55:36,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-12-02 15:55:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:55:36,465 INFO L256 TraceCheckSpWp]: Trace formula consists of 1141 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-12-02 15:55:36,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:55:37,477 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 186 proven. 137 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 15:55:37,477 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:55:38,497 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 60 proven. 51 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-12-02 15:55:38,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142819712] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:55:38,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:55:38,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 14] total 31 [2024-12-02 15:55:38,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166805259] [2024-12-02 15:55:38,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:55:38,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-12-02 15:55:38,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:55:38,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-12-02 15:55:38,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2024-12-02 15:55:38,499 INFO L87 Difference]: Start difference. First operand 29536 states and 35661 transitions. Second operand has 31 states, 31 states have (on average 12.451612903225806) internal successors, (386), 31 states have internal predecessors, (386), 13 states have call successors, (65), 7 states have call predecessors, (65), 8 states have return successors, (64), 13 states have call predecessors, (64), 13 states have call successors, (64) [2024-12-02 15:55:51,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:55:51,972 INFO L93 Difference]: Finished difference Result 57661 states and 69899 transitions. [2024-12-02 15:55:51,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-12-02 15:55:51,972 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 12.451612903225806) internal successors, (386), 31 states have internal predecessors, (386), 13 states have call successors, (65), 7 states have call predecessors, (65), 8 states have return successors, (64), 13 states have call predecessors, (64), 13 states have call successors, (64) Word has length 276 [2024-12-02 15:55:51,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:55:52,135 INFO L225 Difference]: With dead ends: 57661 [2024-12-02 15:55:52,135 INFO L226 Difference]: Without dead ends: 30239 [2024-12-02 15:55:52,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=648, Invalid=3134, Unknown=0, NotChecked=0, Total=3782 [2024-12-02 15:55:52,169 INFO L435 NwaCegarLoop]: 650 mSDtfsCounter, 1600 mSDsluCounter, 5752 mSDsCounter, 0 mSdLazyCounter, 3558 mSolverCounterSat, 519 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 6402 SdHoareTripleChecker+Invalid, 4077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 519 IncrementalHoareTripleChecker+Valid, 3558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 15:55:52,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1600 Valid, 6402 Invalid, 4077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [519 Valid, 3558 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 15:55:52,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30239 states. [2024-12-02 15:56:02,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30239 to 29715. [2024-12-02 15:56:02,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29715 states, 22278 states have (on average 1.2099380554807433) internal successors, (26955), 22553 states have internal predecessors, (26955), 4450 states have call successors, (4450), 2972 states have call predecessors, (4450), 2986 states have return successors, (4464), 4189 states have call predecessors, (4464), 4450 states have call successors, (4464) [2024-12-02 15:56:02,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29715 states to 29715 states and 35869 transitions. [2024-12-02 15:56:03,055 INFO L78 Accepts]: Start accepts. Automaton has 29715 states and 35869 transitions. Word has length 276 [2024-12-02 15:56:03,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:56:03,056 INFO L471 AbstractCegarLoop]: Abstraction has 29715 states and 35869 transitions. [2024-12-02 15:56:03,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 12.451612903225806) internal successors, (386), 31 states have internal predecessors, (386), 13 states have call successors, (65), 7 states have call predecessors, (65), 8 states have return successors, (64), 13 states have call predecessors, (64), 13 states have call successors, (64) [2024-12-02 15:56:03,056 INFO L276 IsEmpty]: Start isEmpty. Operand 29715 states and 35869 transitions. [2024-12-02 15:56:03,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-12-02 15:56:03,067 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:56:03,067 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:56:03,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-12-02 15:56:03,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:56:03,268 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:56:03,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:56:03,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1505537253, now seen corresponding path program 1 times [2024-12-02 15:56:03,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:56:03,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420010430] [2024-12-02 15:56:03,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:56:03,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:56:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:56:03,896 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 61 proven. 51 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-12-02 15:56:03,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:56:03,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420010430] [2024-12-02 15:56:03,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420010430] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:56:03,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784517631] [2024-12-02 15:56:03,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:56:03,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:56:03,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:56:03,898 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:56:03,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-12-02 15:56:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:56:04,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-12-02 15:56:04,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:56:05,250 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 177 proven. 147 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 15:56:05,250 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:56:06,224 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 55 proven. 57 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-12-02 15:56:06,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784517631] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:56:06,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:56:06,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16, 14] total 33 [2024-12-02 15:56:06,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603945371] [2024-12-02 15:56:06,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:56:06,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-12-02 15:56:06,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:56:06,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-12-02 15:56:06,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=884, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 15:56:06,226 INFO L87 Difference]: Start difference. First operand 29715 states and 35869 transitions. Second operand has 33 states, 33 states have (on average 12.303030303030303) internal successors, (406), 33 states have internal predecessors, (406), 14 states have call successors, (65), 7 states have call predecessors, (65), 8 states have return successors, (64), 14 states have call predecessors, (64), 14 states have call successors, (64) [2024-12-02 15:56:21,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:56:21,325 INFO L93 Difference]: Finished difference Result 58081 states and 70368 transitions. [2024-12-02 15:56:21,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-12-02 15:56:21,325 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 12.303030303030303) internal successors, (406), 33 states have internal predecessors, (406), 14 states have call successors, (65), 7 states have call predecessors, (65), 8 states have return successors, (64), 14 states have call predecessors, (64), 14 states have call successors, (64) Word has length 277 [2024-12-02 15:56:21,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:56:21,491 INFO L225 Difference]: With dead ends: 58081 [2024-12-02 15:56:21,492 INFO L226 Difference]: Without dead ends: 30313 [2024-12-02 15:56:21,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2643 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1181, Invalid=7191, Unknown=0, NotChecked=0, Total=8372 [2024-12-02 15:56:21,527 INFO L435 NwaCegarLoop]: 681 mSDtfsCounter, 1769 mSDsluCounter, 8217 mSDsCounter, 0 mSdLazyCounter, 4947 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 8898 SdHoareTripleChecker+Invalid, 5554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 4947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:56:21,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1769 Valid, 8898 Invalid, 5554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 4947 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 15:56:21,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30313 states. [2024-12-02 15:56:32,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30313 to 30017. [2024-12-02 15:56:32,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30017 states, 22505 states have (on average 1.2091979560097756) internal successors, (27213), 22780 states have internal predecessors, (27213), 4495 states have call successors, (4495), 3003 states have call predecessors, (4495), 3016 states have return successors, (4508), 4233 states have call predecessors, (4508), 4495 states have call successors, (4508) [2024-12-02 15:56:32,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30017 states to 30017 states and 36216 transitions. [2024-12-02 15:56:32,558 INFO L78 Accepts]: Start accepts. Automaton has 30017 states and 36216 transitions. Word has length 277 [2024-12-02 15:56:32,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:56:32,559 INFO L471 AbstractCegarLoop]: Abstraction has 30017 states and 36216 transitions. [2024-12-02 15:56:32,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 12.303030303030303) internal successors, (406), 33 states have internal predecessors, (406), 14 states have call successors, (65), 7 states have call predecessors, (65), 8 states have return successors, (64), 14 states have call predecessors, (64), 14 states have call successors, (64) [2024-12-02 15:56:32,559 INFO L276 IsEmpty]: Start isEmpty. Operand 30017 states and 36216 transitions. [2024-12-02 15:56:32,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-12-02 15:56:32,571 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:56:32,571 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:56:32,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-12-02 15:56:32,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2024-12-02 15:56:32,771 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:56:32,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:56:32,772 INFO L85 PathProgramCache]: Analyzing trace with hash 2066746602, now seen corresponding path program 1 times [2024-12-02 15:56:32,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:56:32,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684566039] [2024-12-02 15:56:32,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:56:32,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:56:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:56:33,877 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 88 proven. 23 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-12-02 15:56:33,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:56:33,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684566039] [2024-12-02 15:56:33,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684566039] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:56:33,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010350419] [2024-12-02 15:56:33,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:56:33,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:56:33,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:56:33,879 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:56:33,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-12-02 15:56:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:56:34,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 15:56:34,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:56:34,855 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 197 proven. 127 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 15:56:34,855 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:56:35,996 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 78 proven. 34 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-12-02 15:56:35,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010350419] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:56:35,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:56:35,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 10] total 26 [2024-12-02 15:56:35,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982813801] [2024-12-02 15:56:35,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:56:35,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 15:56:35,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:56:35,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 15:56:35,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2024-12-02 15:56:35,998 INFO L87 Difference]: Start difference. First operand 30017 states and 36216 transitions. Second operand has 26 states, 26 states have (on average 16.615384615384617) internal successors, (432), 25 states have internal predecessors, (432), 12 states have call successors, (71), 7 states have call predecessors, (71), 9 states have return successors, (70), 13 states have call predecessors, (70), 12 states have call successors, (70) [2024-12-02 15:56:57,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:56:57,571 INFO L93 Difference]: Finished difference Result 60439 states and 73111 transitions. [2024-12-02 15:56:57,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2024-12-02 15:56:57,571 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 16.615384615384617) internal successors, (432), 25 states have internal predecessors, (432), 12 states have call successors, (71), 7 states have call predecessors, (71), 9 states have return successors, (70), 13 states have call predecessors, (70), 12 states have call successors, (70) Word has length 279 [2024-12-02 15:56:57,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:56:57,746 INFO L225 Difference]: With dead ends: 60439 [2024-12-02 15:56:57,746 INFO L226 Difference]: Without dead ends: 32476 [2024-12-02 15:56:57,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 803 GetRequests, 614 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14237 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=4540, Invalid=31750, Unknown=0, NotChecked=0, Total=36290 [2024-12-02 15:56:57,785 INFO L435 NwaCegarLoop]: 856 mSDtfsCounter, 3400 mSDsluCounter, 7632 mSDsCounter, 0 mSdLazyCounter, 5773 mSolverCounterSat, 1093 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3400 SdHoareTripleChecker+Valid, 8488 SdHoareTripleChecker+Invalid, 6866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1093 IncrementalHoareTripleChecker+Valid, 5773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:56:57,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3400 Valid, 8488 Invalid, 6866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1093 Valid, 5773 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-12-02 15:56:57,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32476 states. [2024-12-02 15:57:09,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32476 to 31056. [2024-12-02 15:57:09,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31056 states, 23370 states have (on average 1.203808301240907) internal successors, (28133), 23657 states have internal predecessors, (28133), 4582 states have call successors, (4582), 3087 states have call predecessors, (4582), 3103 states have return successors, (4598), 4311 states have call predecessors, (4598), 4582 states have call successors, (4598) [2024-12-02 15:57:09,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31056 states to 31056 states and 37313 transitions. [2024-12-02 15:57:09,659 INFO L78 Accepts]: Start accepts. Automaton has 31056 states and 37313 transitions. Word has length 279 [2024-12-02 15:57:09,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:57:09,659 INFO L471 AbstractCegarLoop]: Abstraction has 31056 states and 37313 transitions. [2024-12-02 15:57:09,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 16.615384615384617) internal successors, (432), 25 states have internal predecessors, (432), 12 states have call successors, (71), 7 states have call predecessors, (71), 9 states have return successors, (70), 13 states have call predecessors, (70), 12 states have call successors, (70) [2024-12-02 15:57:09,659 INFO L276 IsEmpty]: Start isEmpty. Operand 31056 states and 37313 transitions. [2024-12-02 15:57:09,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-12-02 15:57:09,673 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:57:09,673 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:57:09,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-12-02 15:57:09,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2024-12-02 15:57:09,873 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:57:09,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:57:09,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1041949675, now seen corresponding path program 1 times [2024-12-02 15:57:09,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:57:09,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366403245] [2024-12-02 15:57:09,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:57:09,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:57:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:57:11,082 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 44 proven. 57 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-12-02 15:57:11,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:57:11,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366403245] [2024-12-02 15:57:11,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366403245] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:57:11,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315250987] [2024-12-02 15:57:11,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:57:11,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:57:11,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:57:11,084 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:57:11,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-12-02 15:57:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:57:11,459 INFO L256 TraceCheckSpWp]: Trace formula consists of 1184 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-12-02 15:57:11,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:57:13,114 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 159 proven. 143 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-12-02 15:57:13,114 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:57:15,650 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 53 proven. 48 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-12-02 15:57:15,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315250987] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:57:15,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:57:15,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 14] total 39 [2024-12-02 15:57:15,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658418244] [2024-12-02 15:57:15,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:57:15,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-12-02 15:57:15,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:57:15,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-12-02 15:57:15,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1327, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 15:57:15,652 INFO L87 Difference]: Start difference. First operand 31056 states and 37313 transitions. Second operand has 39 states, 39 states have (on average 11.564102564102564) internal successors, (451), 39 states have internal predecessors, (451), 17 states have call successors, (77), 7 states have call predecessors, (77), 8 states have return successors, (76), 17 states have call predecessors, (76), 17 states have call successors, (76) [2024-12-02 15:57:40,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:57:40,096 INFO L93 Difference]: Finished difference Result 63396 states and 76399 transitions. [2024-12-02 15:57:40,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-12-02 15:57:40,097 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 11.564102564102564) internal successors, (451), 39 states have internal predecessors, (451), 17 states have call successors, (77), 7 states have call predecessors, (77), 8 states have return successors, (76), 17 states have call predecessors, (76), 17 states have call successors, (76) Word has length 288 [2024-12-02 15:57:40,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:57:40,284 INFO L225 Difference]: With dead ends: 63396 [2024-12-02 15:57:40,284 INFO L226 Difference]: Without dead ends: 34435 [2024-12-02 15:57:40,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3592 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1451, Invalid=10759, Unknown=0, NotChecked=0, Total=12210 [2024-12-02 15:57:40,322 INFO L435 NwaCegarLoop]: 806 mSDtfsCounter, 1946 mSDsluCounter, 12047 mSDsCounter, 0 mSdLazyCounter, 9098 mSolverCounterSat, 657 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 12853 SdHoareTripleChecker+Invalid, 9755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 657 IncrementalHoareTripleChecker+Valid, 9098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:57:40,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1946 Valid, 12853 Invalid, 9755 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [657 Valid, 9098 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-12-02 15:57:40,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34435 states. [2024-12-02 15:57:53,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34435 to 32282. [2024-12-02 15:57:53,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32282 states, 24309 states have (on average 1.2024353120243532) internal successors, (29230), 24612 states have internal predecessors, (29230), 4747 states have call successors, (4747), 3209 states have call predecessors, (4747), 3225 states have return successors, (4763), 4460 states have call predecessors, (4763), 4747 states have call successors, (4763) [2024-12-02 15:57:53,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32282 states to 32282 states and 38740 transitions. [2024-12-02 15:57:53,389 INFO L78 Accepts]: Start accepts. Automaton has 32282 states and 38740 transitions. Word has length 288 [2024-12-02 15:57:53,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:57:53,389 INFO L471 AbstractCegarLoop]: Abstraction has 32282 states and 38740 transitions. [2024-12-02 15:57:53,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 11.564102564102564) internal successors, (451), 39 states have internal predecessors, (451), 17 states have call successors, (77), 7 states have call predecessors, (77), 8 states have return successors, (76), 17 states have call predecessors, (76), 17 states have call successors, (76) [2024-12-02 15:57:53,389 INFO L276 IsEmpty]: Start isEmpty. Operand 32282 states and 38740 transitions. [2024-12-02 15:57:53,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-12-02 15:57:53,403 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:57:53,403 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:57:53,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-12-02 15:57:53,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2024-12-02 15:57:53,604 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:57:53,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:57:53,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1769509264, now seen corresponding path program 1 times [2024-12-02 15:57:53,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:57:53,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623836950] [2024-12-02 15:57:53,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:57:53,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:57:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:57:54,826 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 43 proven. 61 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-12-02 15:57:54,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:57:54,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623836950] [2024-12-02 15:57:54,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623836950] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:57:54,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780039352] [2024-12-02 15:57:54,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:57:54,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:57:54,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:57:54,828 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:57:54,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d6cfe77-feae-4419-867b-aef561d4bdae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-12-02 15:57:55,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:57:55,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 1185 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-12-02 15:57:55,220 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:57:56,859 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 171 proven. 134 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-12-02 15:57:56,859 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:58:00,435 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 32 proven. 72 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-12-02 15:58:00,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780039352] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:58:00,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:58:00,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 41 [2024-12-02 15:58:00,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018154789] [2024-12-02 15:58:00,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:58:00,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 15:58:00,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:58:00,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 15:58:00,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1442, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 15:58:00,437 INFO L87 Difference]: Start difference. First operand 32282 states and 38740 transitions. Second operand has 41 states, 41 states have (on average 11.024390243902438) internal successors, (452), 41 states have internal predecessors, (452), 17 states have call successors, (77), 7 states have call predecessors, (77), 8 states have return successors, (76), 17 states have call predecessors, (76), 17 states have call successors, (76)