./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-2.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_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/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_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/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_5f5f6a51-f79f-456f-96f6-457359cdf7ff/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 7640909f7ef47a12c6daa58dacf29a693ba9f7401fa2c48138a16311fc07e97d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:38:00,548 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:38:00,610 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 15:38:00,615 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:38:00,615 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:38:00,637 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:38:00,638 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:38:00,638 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:38:00,638 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:38:00,638 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:38:00,639 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:38:00,639 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:38:00,639 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:38:00,639 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:38:00,639 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:38:00,639 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:38:00,639 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:38:00,640 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 15:38:00,640 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:38:00,640 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 15:38:00,640 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:38:00,640 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:38:00,640 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:38:00,640 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:38:00,640 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 15:38:00,640 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:38:00,640 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:38:00,640 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:38:00,640 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:38:00,640 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:38:00,641 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:38:00,641 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:38:00,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:38:00,641 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:38:00,641 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:38:00,641 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:38:00,641 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:38:00,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:38:00,641 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:38:00,641 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:38:00,641 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:38:00,642 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:38:00,642 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:38:00,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:38:00,642 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:38:00,642 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:38:00,642 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:38:00,642 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:38:00,642 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_5f5f6a51-f79f-456f-96f6-457359cdf7ff/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 -> 7640909f7ef47a12c6daa58dacf29a693ba9f7401fa2c48138a16311fc07e97d [2024-12-02 15:38:00,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:38:00,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:38:00,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:38:00,879 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:38:00,879 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:38:00,880 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-2.c [2024-12-02 15:38:03,504 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/data/2992b50f7/4446fab953834f2998d4cfc6a3cc683e/FLAG290384367 [2024-12-02 15:38:04,016 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:38:04,016 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-2.c [2024-12-02 15:38:04,060 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/data/2992b50f7/4446fab953834f2998d4cfc6a3cc683e/FLAG290384367 [2024-12-02 15:38:04,074 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/data/2992b50f7/4446fab953834f2998d4cfc6a3cc683e [2024-12-02 15:38:04,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:38:04,078 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:38:04,080 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:38:04,080 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:38:04,085 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:38:04,086 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:38:04" (1/1) ... [2024-12-02 15:38:04,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bde9f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:04, skipping insertion in model container [2024-12-02 15:38:04,087 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:38:04" (1/1) ... [2024-12-02 15:38:04,269 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:38:05,599 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_5f5f6a51-f79f-456f-96f6-457359cdf7ff/sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-2.c[382357,382370] [2024-12-02 15:38:05,630 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_5f5f6a51-f79f-456f-96f6-457359cdf7ff/sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-2.c[383339,383352] [2024-12-02 15:38:05,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:38:05,834 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:38:06,669 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_5f5f6a51-f79f-456f-96f6-457359cdf7ff/sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-2.c[382357,382370] [2024-12-02 15:38:06,672 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_5f5f6a51-f79f-456f-96f6-457359cdf7ff/sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-2.c[383339,383352] [2024-12-02 15:38:06,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:38:06,748 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:38:06,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:06 WrapperNode [2024-12-02 15:38:06,748 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:38:06,749 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:38:06,749 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:38:06,750 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:38:06,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:06" (1/1) ... [2024-12-02 15:38:06,815 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:06" (1/1) ... [2024-12-02 15:38:07,188 INFO L138 Inliner]: procedures = 52, calls = 54, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 12751 [2024-12-02 15:38:07,188 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:38:07,189 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:38:07,189 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:38:07,189 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:38:07,199 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:06" (1/1) ... [2024-12-02 15:38:07,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:06" (1/1) ... [2024-12-02 15:38:07,249 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:06" (1/1) ... [2024-12-02 15:38:07,360 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 15:38:07,360 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:06" (1/1) ... [2024-12-02 15:38:07,361 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:06" (1/1) ... [2024-12-02 15:38:07,539 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:06" (1/1) ... [2024-12-02 15:38:07,550 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:06" (1/1) ... [2024-12-02 15:38:07,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:06" (1/1) ... [2024-12-02 15:38:07,628 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:06" (1/1) ... [2024-12-02 15:38:07,645 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:06" (1/1) ... [2024-12-02 15:38:07,687 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:38:07,689 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:38:07,689 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:38:07,689 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:38:07,690 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:06" (1/1) ... [2024-12-02 15:38:07,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:38:07,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:38:07,720 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:38:07,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:38:07,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:38:07,745 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-12-02 15:38:07,746 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-12-02 15:38:07,746 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-12-02 15:38:07,746 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-12-02 15:38:07,746 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-12-02 15:38:07,746 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-12-02 15:38:07,746 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-12-02 15:38:07,746 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-12-02 15:38:07,746 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-12-02 15:38:07,746 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-12-02 15:38:07,746 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-12-02 15:38:07,746 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-12-02 15:38:07,747 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-12-02 15:38:07,747 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-12-02 15:38:07,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:38:07,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:38:07,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:38:07,846 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:38:07,847 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:38:15,555 INFO L? ?]: Removed 1711 outVars from TransFormulas that were not future-live. [2024-12-02 15:38:15,556 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:38:15,639 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:38:15,639 INFO L312 CfgBuilder]: Removed 16 assume(true) statements. [2024-12-02 15:38:15,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:38:15 BoogieIcfgContainer [2024-12-02 15:38:15,640 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:38:15,642 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:38:15,642 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:38:15,647 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:38:15,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:38:04" (1/3) ... [2024-12-02 15:38:15,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4893d2b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:38:15, skipping insertion in model container [2024-12-02 15:38:15,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:06" (2/3) ... [2024-12-02 15:38:15,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4893d2b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:38:15, skipping insertion in model container [2024-12-02 15:38:15,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:38:15" (3/3) ... [2024-12-02 15:38:15,652 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.04.cil-2.c [2024-12-02 15:38:15,669 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:38:15,672 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label46+token_ring.04.cil-2.c that has 8 procedures, 2371 locations, 1 initial locations, 8 loop locations, and 2 error locations. [2024-12-02 15:38:15,790 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:38:15,803 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;@3b1c6454, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:38:15,803 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 15:38:15,816 INFO L276 IsEmpty]: Start isEmpty. Operand has 2371 states, 2342 states have (on average 1.854397950469684) internal successors, (4343), 2346 states have internal predecessors, (4343), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 15:38:15,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 15:38:15,825 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:38:15,826 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:38:15,826 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:38:15,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:38:15,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1793460334, now seen corresponding path program 1 times [2024-12-02 15:38:15,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:38:15,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154139042] [2024-12-02 15:38:15,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:15,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:38:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:16,091 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 15:38:16,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:38:16,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154139042] [2024-12-02 15:38:16,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154139042] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:38:16,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:38:16,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:38:16,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885275796] [2024-12-02 15:38:16,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:38:16,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:38:16,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:38:16,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:38:16,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:38:16,122 INFO L87 Difference]: Start difference. First operand has 2371 states, 2342 states have (on average 1.854397950469684) internal successors, (4343), 2346 states have internal predecessors, (4343), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 15:38:16,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:38:16,298 INFO L93 Difference]: Finished difference Result 4735 states and 8755 transitions. [2024-12-02 15:38:16,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:38:16,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2024-12-02 15:38:16,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:38:16,322 INFO L225 Difference]: With dead ends: 4735 [2024-12-02 15:38:16,322 INFO L226 Difference]: Without dead ends: 2303 [2024-12-02 15:38:16,329 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 15:38:16,332 INFO L435 NwaCegarLoop]: 4302 mSDtfsCounter, 275 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 8324 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:38:16,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 8324 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:38:16,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2024-12-02 15:38:16,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 2303. [2024-12-02 15:38:16,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 2275 states have (on average 1.8443956043956045) internal successors, (4196), 2278 states have internal predecessors, (4196), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-12-02 15:38:16,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 4234 transitions. [2024-12-02 15:38:16,447 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 4234 transitions. Word has length 89 [2024-12-02 15:38:16,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:38:16,448 INFO L471 AbstractCegarLoop]: Abstraction has 2303 states and 4234 transitions. [2024-12-02 15:38:16,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 15:38:16,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 4234 transitions. [2024-12-02 15:38:16,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 15:38:16,452 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:38:16,452 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:38:16,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 15:38:16,452 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:38:16,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:38:16,453 INFO L85 PathProgramCache]: Analyzing trace with hash -650957868, now seen corresponding path program 1 times [2024-12-02 15:38:16,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:38:16,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956216131] [2024-12-02 15:38:16,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:16,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:38:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:16,656 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 15:38:16,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:38:16,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956216131] [2024-12-02 15:38:16,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956216131] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:38:16,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:38:16,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:38:16,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53616949] [2024-12-02 15:38:16,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:38:16,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:38:16,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:38:16,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:38:16,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:38:16,659 INFO L87 Difference]: Start difference. First operand 2303 states and 4234 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 15:38:17,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:38:17,157 INFO L93 Difference]: Finished difference Result 2659 states and 4784 transitions. [2024-12-02 15:38:17,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:38:17,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2024-12-02 15:38:17,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:38:17,172 INFO L225 Difference]: With dead ends: 2659 [2024-12-02 15:38:17,173 INFO L226 Difference]: Without dead ends: 2489 [2024-12-02 15:38:17,175 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:38:17,176 INFO L435 NwaCegarLoop]: 4172 mSDtfsCounter, 4440 mSDsluCounter, 8445 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4452 SdHoareTripleChecker+Valid, 12617 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:38:17,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4452 Valid, 12617 Invalid, 353 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:38:17,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2024-12-02 15:38:17,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 2474. [2024-12-02 15:38:17,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2426 states have (on average 1.8268755152514426) internal successors, (4432), 2430 states have internal predecessors, (4432), 33 states have call successors, (33), 13 states have call predecessors, (33), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2024-12-02 15:38:17,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 4497 transitions. [2024-12-02 15:38:17,273 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 4497 transitions. Word has length 89 [2024-12-02 15:38:17,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:38:17,274 INFO L471 AbstractCegarLoop]: Abstraction has 2474 states and 4497 transitions. [2024-12-02 15:38:17,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 15:38:17,274 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 4497 transitions. [2024-12-02 15:38:17,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 15:38:17,276 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:38:17,276 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:38:17,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:38:17,276 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:38:17,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:38:17,277 INFO L85 PathProgramCache]: Analyzing trace with hash -273208112, now seen corresponding path program 1 times [2024-12-02 15:38:17,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:38:17,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817545215] [2024-12-02 15:38:17,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:17,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:38:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:17,482 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 15:38:17,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:38:17,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817545215] [2024-12-02 15:38:17,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817545215] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:38:17,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:38:17,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:38:17,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577321596] [2024-12-02 15:38:17,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:38:17,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:38:17,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:38:17,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:38:17,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:38:17,484 INFO L87 Difference]: Start difference. First operand 2474 states and 4497 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 15:38:18,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:38:18,102 INFO L93 Difference]: Finished difference Result 3030 states and 5359 transitions. [2024-12-02 15:38:18,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:38:18,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2024-12-02 15:38:18,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:38:18,116 INFO L225 Difference]: With dead ends: 3030 [2024-12-02 15:38:18,116 INFO L226 Difference]: Without dead ends: 2689 [2024-12-02 15:38:18,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:38:18,119 INFO L435 NwaCegarLoop]: 4314 mSDtfsCounter, 4433 mSDsluCounter, 12923 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4445 SdHoareTripleChecker+Valid, 17237 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:38:18,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4445 Valid, 17237 Invalid, 595 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:38:18,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2024-12-02 15:38:18,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2634. [2024-12-02 15:38:18,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2634 states, 2566 states have (on average 1.8106001558846454) internal successors, (4646), 2571 states have internal predecessors, (4646), 46 states have call successors, (46), 19 states have call predecessors, (46), 20 states have return successors, (48), 45 states have call predecessors, (48), 44 states have call successors, (48) [2024-12-02 15:38:18,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2634 states to 2634 states and 4740 transitions. [2024-12-02 15:38:18,218 INFO L78 Accepts]: Start accepts. Automaton has 2634 states and 4740 transitions. Word has length 89 [2024-12-02 15:38:18,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:38:18,219 INFO L471 AbstractCegarLoop]: Abstraction has 2634 states and 4740 transitions. [2024-12-02 15:38:18,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 15:38:18,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2634 states and 4740 transitions. [2024-12-02 15:38:18,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 15:38:18,221 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:38:18,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:38:18,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 15:38:18,221 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:38:18,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:38:18,222 INFO L85 PathProgramCache]: Analyzing trace with hash 2110716626, now seen corresponding path program 1 times [2024-12-02 15:38:18,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:38:18,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430701056] [2024-12-02 15:38:18,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:18,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:38:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:18,386 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 15:38:18,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:38:18,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430701056] [2024-12-02 15:38:18,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430701056] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:38:18,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:38:18,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:38:18,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53950063] [2024-12-02 15:38:18,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:38:18,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:38:18,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:38:18,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:38:18,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:38:18,389 INFO L87 Difference]: Start difference. First operand 2634 states and 4740 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 15:38:18,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:38:18,918 INFO L93 Difference]: Finished difference Result 3532 states and 6131 transitions. [2024-12-02 15:38:18,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:38:18,919 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2024-12-02 15:38:18,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:38:18,933 INFO L225 Difference]: With dead ends: 3532 [2024-12-02 15:38:18,933 INFO L226 Difference]: Without dead ends: 3031 [2024-12-02 15:38:18,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:38:18,937 INFO L435 NwaCegarLoop]: 4182 mSDtfsCounter, 4445 mSDsluCounter, 12618 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4457 SdHoareTripleChecker+Valid, 16800 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:38:18,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4457 Valid, 16800 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:38:18,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2024-12-02 15:38:19,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 2971. [2024-12-02 15:38:19,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 2861 states have (on average 1.7829430269136666) internal successors, (5101), 2870 states have internal predecessors, (5101), 72 states have call successors, (72), 31 states have call predecessors, (72), 36 states have return successors, (86), 73 states have call predecessors, (86), 70 states have call successors, (86) [2024-12-02 15:38:19,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 5259 transitions. [2024-12-02 15:38:19,044 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 5259 transitions. Word has length 89 [2024-12-02 15:38:19,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:38:19,044 INFO L471 AbstractCegarLoop]: Abstraction has 2971 states and 5259 transitions. [2024-12-02 15:38:19,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 15:38:19,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 5259 transitions. [2024-12-02 15:38:19,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 15:38:19,046 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:38:19,046 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:38:19,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 15:38:19,046 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:38:19,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:38:19,047 INFO L85 PathProgramCache]: Analyzing trace with hash -2107349872, now seen corresponding path program 1 times [2024-12-02 15:38:19,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:38:19,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622559461] [2024-12-02 15:38:19,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:19,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:38:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:19,189 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 15:38:19,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:38:19,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622559461] [2024-12-02 15:38:19,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622559461] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:38:19,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:38:19,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:38:19,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164051850] [2024-12-02 15:38:19,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:38:19,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:38:19,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:38:19,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:38:19,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:38:19,191 INFO L87 Difference]: Start difference. First operand 2971 states and 5259 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 15:38:19,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:38:19,909 INFO L93 Difference]: Finished difference Result 4599 states and 7804 transitions. [2024-12-02 15:38:19,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:38:19,910 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2024-12-02 15:38:19,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:38:19,931 INFO L225 Difference]: With dead ends: 4599 [2024-12-02 15:38:19,931 INFO L226 Difference]: Without dead ends: 3761 [2024-12-02 15:38:19,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:38:19,937 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 4423 mSDsluCounter, 12902 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4435 SdHoareTripleChecker+Valid, 17209 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:38:19,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4435 Valid, 17209 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:38:19,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3761 states. [2024-12-02 15:38:20,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3761 to 3690. [2024-12-02 15:38:20,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3690 states, 3490 states have (on average 1.742406876790831) internal successors, (6081), 3513 states have internal predecessors, (6081), 124 states have call successors, (124), 55 states have call predecessors, (124), 74 states have return successors, (186), 129 states have call predecessors, (186), 122 states have call successors, (186) [2024-12-02 15:38:20,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3690 states to 3690 states and 6391 transitions. [2024-12-02 15:38:20,146 INFO L78 Accepts]: Start accepts. Automaton has 3690 states and 6391 transitions. Word has length 89 [2024-12-02 15:38:20,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:38:20,146 INFO L471 AbstractCegarLoop]: Abstraction has 3690 states and 6391 transitions. [2024-12-02 15:38:20,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 15:38:20,147 INFO L276 IsEmpty]: Start isEmpty. Operand 3690 states and 6391 transitions. [2024-12-02 15:38:20,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 15:38:20,149 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:38:20,149 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:38:20,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 15:38:20,149 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:38:20,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:38:20,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1220266770, now seen corresponding path program 1 times [2024-12-02 15:38:20,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:38:20,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927234816] [2024-12-02 15:38:20,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:20,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:38:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:20,285 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 15:38:20,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:38:20,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927234816] [2024-12-02 15:38:20,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927234816] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:38:20,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:38:20,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:38:20,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239180248] [2024-12-02 15:38:20,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:38:20,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:38:20,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:38:20,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:38:20,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:38:20,287 INFO L87 Difference]: Start difference. First operand 3690 states and 6391 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 15:38:20,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:38:20,969 INFO L93 Difference]: Finished difference Result 7120 states and 11831 transitions. [2024-12-02 15:38:20,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:38:20,969 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2024-12-02 15:38:20,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:38:20,996 INFO L225 Difference]: With dead ends: 7120 [2024-12-02 15:38:20,996 INFO L226 Difference]: Without dead ends: 5563 [2024-12-02 15:38:21,003 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:38:21,004 INFO L435 NwaCegarLoop]: 4298 mSDtfsCounter, 4549 mSDsluCounter, 12872 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4566 SdHoareTripleChecker+Valid, 17170 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:38:21,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4566 Valid, 17170 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:38:21,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5563 states. [2024-12-02 15:38:21,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5563 to 5194. [2024-12-02 15:38:21,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5194 states, 4804 states have (on average 1.6958784346378017) internal successors, (8147), 4873 states have internal predecessors, (8147), 220 states have call successors, (220), 103 states have call predecessors, (220), 168 states have return successors, (474), 233 states have call predecessors, (474), 218 states have call successors, (474) [2024-12-02 15:38:21,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5194 states to 5194 states and 8841 transitions. [2024-12-02 15:38:21,255 INFO L78 Accepts]: Start accepts. Automaton has 5194 states and 8841 transitions. Word has length 89 [2024-12-02 15:38:21,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:38:21,256 INFO L471 AbstractCegarLoop]: Abstraction has 5194 states and 8841 transitions. [2024-12-02 15:38:21,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 15:38:21,256 INFO L276 IsEmpty]: Start isEmpty. Operand 5194 states and 8841 transitions. [2024-12-02 15:38:21,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 15:38:21,260 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:38:21,260 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:38:21,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 15:38:21,260 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:38:21,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:38:21,261 INFO L85 PathProgramCache]: Analyzing trace with hash 727640596, now seen corresponding path program 1 times [2024-12-02 15:38:21,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:38:21,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129392001] [2024-12-02 15:38:21,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:21,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:38:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:21,405 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 15:38:21,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:38:21,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129392001] [2024-12-02 15:38:21,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129392001] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:38:21,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:38:21,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:38:21,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009855323] [2024-12-02 15:38:21,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:38:21,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:38:21,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:38:21,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:38:21,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:38:21,407 INFO L87 Difference]: Start difference. First operand 5194 states and 8841 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 15:38:22,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:38:22,189 INFO L93 Difference]: Finished difference Result 12040 states and 20147 transitions. [2024-12-02 15:38:22,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:38:22,190 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2024-12-02 15:38:22,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:38:22,231 INFO L225 Difference]: With dead ends: 12040 [2024-12-02 15:38:22,231 INFO L226 Difference]: Without dead ends: 8979 [2024-12-02 15:38:22,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:38:22,243 INFO L435 NwaCegarLoop]: 4294 mSDtfsCounter, 4442 mSDsluCounter, 12860 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4453 SdHoareTripleChecker+Valid, 17154 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:38:22,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4453 Valid, 17154 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:38:22,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8979 states. [2024-12-02 15:38:22,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8979 to 8277. [2024-12-02 15:38:22,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8277 states, 7461 states have (on average 1.6495107894384131) internal successors, (12307), 7676 states have internal predecessors, (12307), 404 states have call successors, (404), 199 states have call predecessors, (404), 410 states have return successors, (1426), 433 states have call predecessors, (1426), 402 states have call successors, (1426) [2024-12-02 15:38:22,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 14137 transitions. [2024-12-02 15:38:22,695 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 14137 transitions. Word has length 89 [2024-12-02 15:38:22,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:38:22,695 INFO L471 AbstractCegarLoop]: Abstraction has 8277 states and 14137 transitions. [2024-12-02 15:38:22,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 15:38:22,696 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 14137 transitions. [2024-12-02 15:38:22,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 15:38:22,702 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:38:22,702 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:38:22,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 15:38:22,702 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:38:22,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:38:22,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1681580754, now seen corresponding path program 1 times [2024-12-02 15:38:22,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:38:22,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20650452] [2024-12-02 15:38:22,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:22,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:38:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:22,823 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 15:38:22,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:38:22,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20650452] [2024-12-02 15:38:22,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20650452] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:38:22,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:38:22,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:38:22,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055292259] [2024-12-02 15:38:22,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:38:22,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:38:22,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:38:22,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:38:22,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:38:22,825 INFO L87 Difference]: Start difference. First operand 8277 states and 14137 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 15:38:23,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:38:23,735 INFO L93 Difference]: Finished difference Result 22109 states and 38589 transitions. [2024-12-02 15:38:23,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:38:23,736 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2024-12-02 15:38:23,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:38:23,790 INFO L225 Difference]: With dead ends: 22109 [2024-12-02 15:38:23,790 INFO L226 Difference]: Without dead ends: 15965 [2024-12-02 15:38:23,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:38:23,807 INFO L435 NwaCegarLoop]: 4292 mSDtfsCounter, 4479 mSDsluCounter, 12854 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4496 SdHoareTripleChecker+Valid, 17146 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:38:23,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4496 Valid, 17146 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:38:23,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15965 states. [2024-12-02 15:38:24,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15965 to 15106. [2024-12-02 15:38:24,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15106 states, 13292 states have (on average 1.617439061089377) internal successors, (21499), 13961 states have internal predecessors, (21499), 756 states have call successors, (756), 391 states have call predecessors, (756), 1056 states have return successors, (4850), 817 states have call predecessors, (4850), 754 states have call successors, (4850) [2024-12-02 15:38:24,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15106 states to 15106 states and 27105 transitions. [2024-12-02 15:38:24,612 INFO L78 Accepts]: Start accepts. Automaton has 15106 states and 27105 transitions. Word has length 89 [2024-12-02 15:38:24,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:38:24,612 INFO L471 AbstractCegarLoop]: Abstraction has 15106 states and 27105 transitions. [2024-12-02 15:38:24,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 15:38:24,613 INFO L276 IsEmpty]: Start isEmpty. Operand 15106 states and 27105 transitions. [2024-12-02 15:38:24,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 15:38:24,627 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:38:24,627 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:38:24,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 15:38:24,627 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:38:24,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:38:24,628 INFO L85 PathProgramCache]: Analyzing trace with hash 465427028, now seen corresponding path program 1 times [2024-12-02 15:38:24,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:38:24,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934063821] [2024-12-02 15:38:24,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:24,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:38:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:24,785 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 15:38:24,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:38:24,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934063821] [2024-12-02 15:38:24,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934063821] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:38:24,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:38:24,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:38:24,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120247219] [2024-12-02 15:38:24,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:38:24,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:38:24,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:38:24,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:38:24,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:38:24,787 INFO L87 Difference]: Start difference. First operand 15106 states and 27105 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 15:38:26,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:38:26,404 INFO L93 Difference]: Finished difference Result 44032 states and 84923 transitions. [2024-12-02 15:38:26,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:38:26,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2024-12-02 15:38:26,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:38:26,584 INFO L225 Difference]: With dead ends: 44032 [2024-12-02 15:38:26,584 INFO L226 Difference]: Without dead ends: 31059 [2024-12-02 15:38:26,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:38:26,633 INFO L435 NwaCegarLoop]: 4289 mSDtfsCounter, 4444 mSDsluCounter, 12845 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4461 SdHoareTripleChecker+Valid, 17134 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:38:26,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4461 Valid, 17134 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:38:26,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31059 states. [2024-12-02 15:38:28,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31059 to 29883. [2024-12-02 15:38:28,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29883 states, 25619 states have (on average 1.590967641203794) internal successors, (40759), 27682 states have internal predecessors, (40759), 1428 states have call successors, (1428), 775 states have call predecessors, (1428), 2834 states have return successors, (17810), 1553 states have call predecessors, (17810), 1426 states have call successors, (17810) [2024-12-02 15:38:28,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29883 states to 29883 states and 59997 transitions. [2024-12-02 15:38:28,599 INFO L78 Accepts]: Start accepts. Automaton has 29883 states and 59997 transitions. Word has length 89 [2024-12-02 15:38:28,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:38:28,600 INFO L471 AbstractCegarLoop]: Abstraction has 29883 states and 59997 transitions. [2024-12-02 15:38:28,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 15:38:28,600 INFO L276 IsEmpty]: Start isEmpty. Operand 29883 states and 59997 transitions. [2024-12-02 15:38:28,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 15:38:28,617 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:38:28,617 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:38:28,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 15:38:28,618 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:38:28,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:38:28,618 INFO L85 PathProgramCache]: Analyzing trace with hash -266540398, now seen corresponding path program 1 times [2024-12-02 15:38:28,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:38:28,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033786094] [2024-12-02 15:38:28,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:28,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:38:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:28,722 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 15:38:28,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:38:28,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033786094] [2024-12-02 15:38:28,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033786094] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:38:28,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:38:28,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:38:28,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434126128] [2024-12-02 15:38:28,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:38:28,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:38:28,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:38:28,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:38:28,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:38:28,724 INFO L87 Difference]: Start difference. First operand 29883 states and 59997 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 15:38:31,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:38:31,755 INFO L93 Difference]: Finished difference Result 90443 states and 207969 transitions. [2024-12-02 15:38:31,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:38:31,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2024-12-02 15:38:31,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:38:32,080 INFO L225 Difference]: With dead ends: 90443 [2024-12-02 15:38:32,081 INFO L226 Difference]: Without dead ends: 62693 [2024-12-02 15:38:32,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:38:32,166 INFO L435 NwaCegarLoop]: 4284 mSDtfsCounter, 4398 mSDsluCounter, 12838 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4409 SdHoareTripleChecker+Valid, 17122 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:38:32,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4409 Valid, 17122 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:38:32,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62693 states. [2024-12-02 15:38:37,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62693 to 61408. [2024-12-02 15:38:37,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61408 states, 50866 states have (on average 1.5546534030590178) internal successors, (79079), 57175 states have internal predecessors, (79079), 2700 states have call successors, (2700), 1535 states have call predecessors, (2700), 7840 states have return successors, (68234), 2953 states have call predecessors, (68234), 2698 states have call successors, (68234) [2024-12-02 15:38:38,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61408 states to 61408 states and 150013 transitions. [2024-12-02 15:38:38,203 INFO L78 Accepts]: Start accepts. Automaton has 61408 states and 150013 transitions. Word has length 89 [2024-12-02 15:38:38,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:38:38,203 INFO L471 AbstractCegarLoop]: Abstraction has 61408 states and 150013 transitions. [2024-12-02 15:38:38,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 15:38:38,204 INFO L276 IsEmpty]: Start isEmpty. Operand 61408 states and 150013 transitions. [2024-12-02 15:38:38,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 15:38:38,225 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:38:38,225 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:38:38,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 15:38:38,225 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:38:38,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:38:38,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1952720236, now seen corresponding path program 1 times [2024-12-02 15:38:38,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:38:38,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924192314] [2024-12-02 15:38:38,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:38,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:38:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:38,275 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 15:38:38,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:38:38,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924192314] [2024-12-02 15:38:38,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924192314] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:38:38,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:38:38,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:38:38,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463874472] [2024-12-02 15:38:38,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:38:38,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:38:38,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:38:38,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:38:38,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:38:38,277 INFO L87 Difference]: Start difference. First operand 61408 states and 150013 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 15:38:42,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:38:42,135 INFO L93 Difference]: Finished difference Result 153626 states and 374024 transitions. [2024-12-02 15:38:42,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:38:42,136 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), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2024-12-02 15:38:42,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:38:42,614 INFO L225 Difference]: With dead ends: 153626 [2024-12-02 15:38:42,614 INFO L226 Difference]: Without dead ends: 94352 [2024-12-02 15:38:42,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:38:42,822 INFO L435 NwaCegarLoop]: 4458 mSDtfsCounter, 4418 mSDsluCounter, 4389 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 8847 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:38:42,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4418 Valid, 8847 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:38:42,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94352 states. [2024-12-02 15:38:49,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94352 to 86771. [2024-12-02 15:38:49,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86771 states, 71973 states have (on average 1.5356314173370569) internal successors, (110524), 80471 states have internal predecessors, (110524), 4122 states have call successors, (4122), 2309 states have call predecessors, (4122), 10674 states have return successors, (85913), 4246 states have call predecessors, (85913), 4120 states have call successors, (85913) [2024-12-02 15:38:50,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86771 states to 86771 states and 200559 transitions. [2024-12-02 15:38:50,048 INFO L78 Accepts]: Start accepts. Automaton has 86771 states and 200559 transitions. Word has length 89 [2024-12-02 15:38:50,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:38:50,049 INFO L471 AbstractCegarLoop]: Abstraction has 86771 states and 200559 transitions. [2024-12-02 15:38:50,049 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), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 15:38:50,049 INFO L276 IsEmpty]: Start isEmpty. Operand 86771 states and 200559 transitions. [2024-12-02 15:38:50,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-12-02 15:38:50,207 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:38:50,207 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:38:50,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 15:38:50,207 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:38:50,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:38:50,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1484263377, now seen corresponding path program 1 times [2024-12-02 15:38:50,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:38:50,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236372179] [2024-12-02 15:38:50,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:50,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:38:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:50,305 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 15:38:50,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:38:50,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236372179] [2024-12-02 15:38:50,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236372179] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:38:50,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907859780] [2024-12-02 15:38:50,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:50,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:38:50,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:38:50,308 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:38:50,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 15:38:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:50,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 15:38:50,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:38:50,542 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-12-02 15:38:50,543 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:38:50,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907859780] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:38:50,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:38:50,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-12-02 15:38:50,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695944967] [2024-12-02 15:38:50,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:38:50,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:38:50,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:38:50,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:38:50,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:38:50,544 INFO L87 Difference]: Start difference. First operand 86771 states and 200559 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 15:38:57,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:38:57,686 INFO L93 Difference]: Finished difference Result 254666 states and 593105 transitions. [2024-12-02 15:38:57,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:38:57,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2024-12-02 15:38:57,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:38:58,612 INFO L225 Difference]: With dead ends: 254666 [2024-12-02 15:38:58,612 INFO L226 Difference]: Without dead ends: 170029 [2024-12-02 15:38:58,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 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 15:38:58,903 INFO L435 NwaCegarLoop]: 4229 mSDtfsCounter, 4182 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4182 SdHoareTripleChecker+Valid, 4475 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:38:58,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4182 Valid, 4475 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:38:58,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170029 states. [2024-12-02 15:39:12,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170029 to 169639. [2024-12-02 15:39:12,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169639 states, 140261 states have (on average 1.5283150697627994) internal successors, (214363), 157254 states have internal predecessors, (214363), 8036 states have call successors, (8036), 4609 states have call predecessors, (8036), 21340 states have return successors, (171365), 8031 states have call predecessors, (171365), 8034 states have call successors, (171365) [2024-12-02 15:39:13,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169639 states to 169639 states and 393764 transitions. [2024-12-02 15:39:13,743 INFO L78 Accepts]: Start accepts. Automaton has 169639 states and 393764 transitions. Word has length 144 [2024-12-02 15:39:13,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:39:13,744 INFO L471 AbstractCegarLoop]: Abstraction has 169639 states and 393764 transitions. [2024-12-02 15:39:13,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 15:39:13,744 INFO L276 IsEmpty]: Start isEmpty. Operand 169639 states and 393764 transitions. [2024-12-02 15:39:14,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-12-02 15:39:14,056 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:39:14,056 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:39:14,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 15:39:14,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 15:39:14,257 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:39:14,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:39:14,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1565320015, now seen corresponding path program 1 times [2024-12-02 15:39:14,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:39:14,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372103902] [2024-12-02 15:39:14,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:39:14,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:39:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:39:14,347 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 15:39:14,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:39:14,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372103902] [2024-12-02 15:39:14,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372103902] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:39:14,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432976101] [2024-12-02 15:39:14,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:39:14,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:39:14,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:39:14,349 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:39:14,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 15:39:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:39:14,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 15:39:14,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:39:14,585 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-02 15:39:14,585 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:39:14,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432976101] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:39:14,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:39:14,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-12-02 15:39:14,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22312605] [2024-12-02 15:39:14,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:39:14,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:39:14,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:39:14,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:39:14,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:39:14,587 INFO L87 Difference]: Start difference. First operand 169639 states and 393764 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 15:39:28,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:39:28,685 INFO L93 Difference]: Finished difference Result 501868 states and 1172126 transitions. [2024-12-02 15:39:28,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:39:28,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2024-12-02 15:39:28,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:39:30,764 INFO L225 Difference]: With dead ends: 501868 [2024-12-02 15:39:30,764 INFO L226 Difference]: Without dead ends: 334363 [2024-12-02 15:39:31,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 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 15:39:31,604 INFO L435 NwaCegarLoop]: 4229 mSDtfsCounter, 4176 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4176 SdHoareTripleChecker+Valid, 4475 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:39:31,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4176 Valid, 4475 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:39:31,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334363 states. [2024-12-02 15:39:56,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334363 to 333587. [2024-12-02 15:39:56,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333587 states, 275275 states have (on average 1.5232803560076287) internal successors, (419321), 309258 states have internal predecessors, (419321), 15654 states have call successors, (15654), 9193 states have call predecessors, (15654), 42656 states have return successors, (342059), 15391 states have call predecessors, (342059), 15652 states have call successors, (342059) [2024-12-02 15:39:58,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333587 states to 333587 states and 777034 transitions. [2024-12-02 15:39:58,941 INFO L78 Accepts]: Start accepts. Automaton has 333587 states and 777034 transitions. Word has length 144 [2024-12-02 15:39:58,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:39:58,942 INFO L471 AbstractCegarLoop]: Abstraction has 333587 states and 777034 transitions. [2024-12-02 15:39:58,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 15:39:58,942 INFO L276 IsEmpty]: Start isEmpty. Operand 333587 states and 777034 transitions. [2024-12-02 15:39:59,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-12-02 15:39:59,635 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:39:59,635 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:39:59,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 15:39:59,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-02 15:39:59,836 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:39:59,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:39:59,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1993495219, now seen corresponding path program 1 times [2024-12-02 15:39:59,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:39:59,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350693760] [2024-12-02 15:39:59,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:39:59,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:39:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:39:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 15:39:59,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:39:59,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350693760] [2024-12-02 15:39:59,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350693760] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:39:59,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669696447] [2024-12-02 15:39:59,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:39:59,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:39:59,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:39:59,898 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:39:59,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f5f6a51-f79f-456f-96f6-457359cdf7ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 15:40:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:40:00,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 15:40:00,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:40:00,051 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:40:00,051 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:40:00,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669696447] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:40:00,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:40:00,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 15:40:00,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364048705] [2024-12-02 15:40:00,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:40:00,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:40:00,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:40:00,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:40:00,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:40:00,052 INFO L87 Difference]: Start difference. First operand 333587 states and 777034 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)