./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/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_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/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_6f678635-8788-4411-9f5f-e25b877b2bcd/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 c5be25d34b5f565c0e61b447a9da3cd9d228084b5ddd898e062981f46972caa8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:40:40,238 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:40:40,287 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 15:40:40,291 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:40:40,292 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:40:40,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:40:40,310 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:40:40,310 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:40:40,310 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:40:40,310 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:40:40,310 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:40:40,311 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:40:40,311 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:40:40,311 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:40:40,311 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:40:40,311 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:40:40,311 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:40:40,311 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 15:40:40,311 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:40:40,312 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 15:40:40,312 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:40:40,312 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:40:40,312 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:40:40,312 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:40:40,312 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 15:40:40,312 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:40:40,312 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:40:40,312 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:40:40,312 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:40:40,312 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:40:40,313 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:40:40,313 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:40:40,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:40:40,313 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:40:40,313 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:40:40,313 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:40:40,313 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:40:40,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:40:40,313 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:40:40,314 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:40:40,314 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:40:40,314 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:40:40,314 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:40:40,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:40:40,314 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:40:40,314 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:40:40,314 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:40:40,314 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:40:40,314 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_6f678635-8788-4411-9f5f-e25b877b2bcd/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 -> c5be25d34b5f565c0e61b447a9da3cd9d228084b5ddd898e062981f46972caa8 [2024-12-02 15:40:40,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:40:40,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:40:40,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:40:40,555 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:40:40,556 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:40:40,557 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2024-12-02 15:40:43,234 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/data/c8c387455/9ad35d74f8394db6839293c3d8e9512a/FLAGaea4695b4 [2024-12-02 15:40:43,424 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:40:43,425 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2024-12-02 15:40:43,434 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/data/c8c387455/9ad35d74f8394db6839293c3d8e9512a/FLAGaea4695b4 [2024-12-02 15:40:43,787 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/data/c8c387455/9ad35d74f8394db6839293c3d8e9512a [2024-12-02 15:40:43,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:40:43,790 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:40:43,791 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:40:43,791 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:40:43,795 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:40:43,796 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:40:43" (1/1) ... [2024-12-02 15:40:43,797 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69b29c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:43, skipping insertion in model container [2024-12-02 15:40:43,797 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:40:43" (1/1) ... [2024-12-02 15:40:43,820 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:40:44,008 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_6f678635-8788-4411-9f5f-e25b877b2bcd/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c[9280,9293] [2024-12-02 15:40:44,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:40:44,023 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:40:44,066 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_6f678635-8788-4411-9f5f-e25b877b2bcd/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c[9280,9293] [2024-12-02 15:40:44,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:40:44,082 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:40:44,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:44 WrapperNode [2024-12-02 15:40:44,083 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:40:44,084 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:40:44,084 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:40:44,084 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:40:44,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:44" (1/1) ... [2024-12-02 15:40:44,098 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:44" (1/1) ... [2024-12-02 15:40:44,123 INFO L138 Inliner]: procedures = 22, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 312 [2024-12-02 15:40:44,124 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:40:44,124 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:40:44,124 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:40:44,124 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:40:44,134 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:44" (1/1) ... [2024-12-02 15:40:44,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:44" (1/1) ... [2024-12-02 15:40:44,137 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:44" (1/1) ... [2024-12-02 15:40:44,151 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 15:40:44,151 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:44" (1/1) ... [2024-12-02 15:40:44,151 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:44" (1/1) ... [2024-12-02 15:40:44,157 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:44" (1/1) ... [2024-12-02 15:40:44,158 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:44" (1/1) ... [2024-12-02 15:40:44,163 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:44" (1/1) ... [2024-12-02 15:40:44,165 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:44" (1/1) ... [2024-12-02 15:40:44,166 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:44" (1/1) ... [2024-12-02 15:40:44,169 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:40:44,169 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:40:44,169 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:40:44,170 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:40:44,171 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:44" (1/1) ... [2024-12-02 15:40:44,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:40:44,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:40:44,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:40:44,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:40:44,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:40:44,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:40:44,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:40:44,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:40:44,306 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:40:44,307 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:40:44,657 INFO L? ?]: Removed 37 outVars from TransFormulas that were not future-live. [2024-12-02 15:40:44,657 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:40:44,667 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:40:44,668 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 15:40:44,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:40:44 BoogieIcfgContainer [2024-12-02 15:40:44,668 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:40:44,669 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:40:44,669 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:40:44,673 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:40:44,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:40:43" (1/3) ... [2024-12-02 15:40:44,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad4a37e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:40:44, skipping insertion in model container [2024-12-02 15:40:44,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:44" (2/3) ... [2024-12-02 15:40:44,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad4a37e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:40:44, skipping insertion in model container [2024-12-02 15:40:44,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:40:44" (3/3) ... [2024-12-02 15:40:44,675 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2024-12-02 15:40:44,687 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:40:44,689 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c that has 1 procedures, 84 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 15:40:44,735 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:40:44,744 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;@3426e133, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:40:44,744 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 15:40:44,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 82 states have (on average 1.7195121951219512) internal successors, (141), 83 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:44,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-12-02 15:40:44,765 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:40:44,766 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] [2024-12-02 15:40:44,766 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:40:44,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:40:44,772 INFO L85 PathProgramCache]: Analyzing trace with hash 942240500, now seen corresponding path program 1 times [2024-12-02 15:40:44,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:40:44,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389016378] [2024-12-02 15:40:44,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:40:44,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:40:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:40:44,993 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 15:40:44,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:40:44,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389016378] [2024-12-02 15:40:44,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389016378] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:40:44,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:40:44,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:40:44,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391939904] [2024-12-02 15:40:44,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:40:45,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 15:40:45,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:40:45,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 15:40:45,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:40:45,023 INFO L87 Difference]: Start difference. First operand has 84 states, 82 states have (on average 1.7195121951219512) internal successors, (141), 83 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:45,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:40:45,041 INFO L93 Difference]: Finished difference Result 139 states and 228 transitions. [2024-12-02 15:40:45,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 15:40:45,043 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-12-02 15:40:45,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:40:45,050 INFO L225 Difference]: With dead ends: 139 [2024-12-02 15:40:45,050 INFO L226 Difference]: Without dead ends: 80 [2024-12-02 15:40:45,053 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:40:45,055 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:40:45,056 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:40:45,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-12-02 15:40:45,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-12-02 15:40:45,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.6962025316455696) internal successors, (134), 79 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:45,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 134 transitions. [2024-12-02 15:40:45,082 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 134 transitions. Word has length 30 [2024-12-02 15:40:45,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:40:45,083 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 134 transitions. [2024-12-02 15:40:45,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:45,083 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 134 transitions. [2024-12-02 15:40:45,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-12-02 15:40:45,084 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:40:45,085 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] [2024-12-02 15:40:45,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 15:40:45,085 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:40:45,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:40:45,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1082789110, now seen corresponding path program 1 times [2024-12-02 15:40:45,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:40:45,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616543214] [2024-12-02 15:40:45,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:40:45,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:40:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:40:45,288 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 15:40:45,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:40:45,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616543214] [2024-12-02 15:40:45,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616543214] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:40:45,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:40:45,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:40:45,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058517864] [2024-12-02 15:40:45,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:40:45,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:40:45,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:40:45,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:40:45,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:40:45,291 INFO L87 Difference]: Start difference. First operand 80 states and 134 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:45,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:40:45,385 INFO L93 Difference]: Finished difference Result 184 states and 298 transitions. [2024-12-02 15:40:45,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:40:45,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-12-02 15:40:45,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:40:45,387 INFO L225 Difference]: With dead ends: 184 [2024-12-02 15:40:45,387 INFO L226 Difference]: Without dead ends: 130 [2024-12-02 15:40:45,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:40:45,388 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 79 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:40:45,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 490 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:40:45,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-12-02 15:40:45,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 80. [2024-12-02 15:40:45,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.3924050632911393) internal successors, (110), 79 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:45,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 110 transitions. [2024-12-02 15:40:45,396 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 110 transitions. Word has length 30 [2024-12-02 15:40:45,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:40:45,397 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 110 transitions. [2024-12-02 15:40:45,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:45,397 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 110 transitions. [2024-12-02 15:40:45,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-12-02 15:40:45,398 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:40:45,398 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] [2024-12-02 15:40:45,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:40:45,399 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:40:45,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:40:45,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1678150685, now seen corresponding path program 1 times [2024-12-02 15:40:45,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:40:45,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728876013] [2024-12-02 15:40:45,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:40:45,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:40:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:40:45,528 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 15:40:45,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:40:45,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728876013] [2024-12-02 15:40:45,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728876013] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:40:45,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:40:45,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:40:45,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408409349] [2024-12-02 15:40:45,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:40:45,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:40:45,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:40:45,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:40:45,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:40:45,530 INFO L87 Difference]: Start difference. First operand 80 states and 110 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:45,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:40:45,559 INFO L93 Difference]: Finished difference Result 172 states and 256 transitions. [2024-12-02 15:40:45,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:40:45,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-12-02 15:40:45,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:40:45,561 INFO L225 Difference]: With dead ends: 172 [2024-12-02 15:40:45,561 INFO L226 Difference]: Without dead ends: 122 [2024-12-02 15:40:45,561 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 15:40:45,562 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 63 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:40:45,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 237 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:40:45,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-12-02 15:40:45,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2024-12-02 15:40:45,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.4621848739495797) internal successors, (174), 119 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:45,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 174 transitions. [2024-12-02 15:40:45,571 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 174 transitions. Word has length 53 [2024-12-02 15:40:45,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:40:45,572 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 174 transitions. [2024-12-02 15:40:45,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:45,572 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 174 transitions. [2024-12-02 15:40:45,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-12-02 15:40:45,573 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:40:45,573 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] [2024-12-02 15:40:45,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 15:40:45,573 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:40:45,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:40:45,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1438385954, now seen corresponding path program 1 times [2024-12-02 15:40:45,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:40:45,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997324797] [2024-12-02 15:40:45,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:40:45,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:40:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:40:45,714 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 15:40:45,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:40:45,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997324797] [2024-12-02 15:40:45,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997324797] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:40:45,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:40:45,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:40:45,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897006406] [2024-12-02 15:40:45,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:40:45,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:40:45,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:40:45,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:40:45,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:40:45,716 INFO L87 Difference]: Start difference. First operand 120 states and 174 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:45,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:40:45,829 INFO L93 Difference]: Finished difference Result 570 states and 894 transitions. [2024-12-02 15:40:45,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:40:45,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-12-02 15:40:45,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:40:45,832 INFO L225 Difference]: With dead ends: 570 [2024-12-02 15:40:45,833 INFO L226 Difference]: Without dead ends: 480 [2024-12-02 15:40:45,833 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:40:45,834 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 771 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:40:45,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 566 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:40:45,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2024-12-02 15:40:45,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 208. [2024-12-02 15:40:45,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.5120772946859904) internal successors, (313), 207 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:45,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 313 transitions. [2024-12-02 15:40:45,853 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 313 transitions. Word has length 53 [2024-12-02 15:40:45,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:40:45,854 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 313 transitions. [2024-12-02 15:40:45,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:45,854 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 313 transitions. [2024-12-02 15:40:45,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-12-02 15:40:45,855 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:40:45,855 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] [2024-12-02 15:40:45,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 15:40:45,855 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:40:45,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:40:45,856 INFO L85 PathProgramCache]: Analyzing trace with hash -2023614994, now seen corresponding path program 1 times [2024-12-02 15:40:45,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:40:45,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459610688] [2024-12-02 15:40:45,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:40:45,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:40:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:40:46,187 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 15:40:46,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:40:46,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459610688] [2024-12-02 15:40:46,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459610688] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:40:46,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:40:46,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 15:40:46,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878166674] [2024-12-02 15:40:46,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:40:46,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 15:40:46,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:40:46,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 15:40:46,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:40:46,189 INFO L87 Difference]: Start difference. First operand 208 states and 313 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:46,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:40:46,247 INFO L93 Difference]: Finished difference Result 222 states and 330 transitions. [2024-12-02 15:40:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:40:46,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-12-02 15:40:46,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:40:46,248 INFO L225 Difference]: With dead ends: 222 [2024-12-02 15:40:46,249 INFO L226 Difference]: Without dead ends: 220 [2024-12-02 15:40:46,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:40:46,250 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:40:46,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 713 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:40:46,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-12-02 15:40:46,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2024-12-02 15:40:46,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.4840182648401827) internal successors, (325), 219 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:46,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 325 transitions. [2024-12-02 15:40:46,264 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 325 transitions. Word has length 54 [2024-12-02 15:40:46,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:40:46,264 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 325 transitions. [2024-12-02 15:40:46,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:46,265 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 325 transitions. [2024-12-02 15:40:46,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-12-02 15:40:46,266 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:40:46,266 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] [2024-12-02 15:40:46,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 15:40:46,266 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:40:46,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:40:46,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1745023158, now seen corresponding path program 1 times [2024-12-02 15:40:46,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:40:46,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461547486] [2024-12-02 15:40:46,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:40:46,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:40:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:40:46,352 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 15:40:46,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:40:46,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461547486] [2024-12-02 15:40:46,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461547486] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:40:46,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:40:46,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:40:46,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503043295] [2024-12-02 15:40:46,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:40:46,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:40:46,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:40:46,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:40:46,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:40:46,355 INFO L87 Difference]: Start difference. First operand 220 states and 325 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:46,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:40:46,375 INFO L93 Difference]: Finished difference Result 570 states and 865 transitions. [2024-12-02 15:40:46,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:40:46,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-12-02 15:40:46,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:40:46,378 INFO L225 Difference]: With dead ends: 570 [2024-12-02 15:40:46,379 INFO L226 Difference]: Without dead ends: 380 [2024-12-02 15:40:46,379 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 15:40:46,380 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 48 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:40:46,381 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 187 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:40:46,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-12-02 15:40:46,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 378. [2024-12-02 15:40:46,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 1.4986737400530503) internal successors, (565), 377 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:46,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 565 transitions. [2024-12-02 15:40:46,398 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 565 transitions. Word has length 55 [2024-12-02 15:40:46,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:40:46,398 INFO L471 AbstractCegarLoop]: Abstraction has 378 states and 565 transitions. [2024-12-02 15:40:46,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:46,398 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 565 transitions. [2024-12-02 15:40:46,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-12-02 15:40:46,400 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:40:46,400 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] [2024-12-02 15:40:46,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 15:40:46,400 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:40:46,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:40:46,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1074748358, now seen corresponding path program 1 times [2024-12-02 15:40:46,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:40:46,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259037720] [2024-12-02 15:40:46,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:40:46,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:40:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:40:46,474 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 15:40:46,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:40:46,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259037720] [2024-12-02 15:40:46,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259037720] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:40:46,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:40:46,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:40:46,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53455770] [2024-12-02 15:40:46,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:40:46,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:40:46,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:40:46,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:40:46,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:40:46,475 INFO L87 Difference]: Start difference. First operand 378 states and 565 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:46,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:40:46,505 INFO L93 Difference]: Finished difference Result 733 states and 1111 transitions. [2024-12-02 15:40:46,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:40:46,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-12-02 15:40:46,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:40:46,508 INFO L225 Difference]: With dead ends: 733 [2024-12-02 15:40:46,508 INFO L226 Difference]: Without dead ends: 543 [2024-12-02 15:40:46,509 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 15:40:46,510 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 67 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:40:46,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 249 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:40:46,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-12-02 15:40:46,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 541. [2024-12-02 15:40:46,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 540 states have (on average 1.5) internal successors, (810), 540 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:46,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 810 transitions. [2024-12-02 15:40:46,525 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 810 transitions. Word has length 55 [2024-12-02 15:40:46,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:40:46,525 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 810 transitions. [2024-12-02 15:40:46,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:46,526 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 810 transitions. [2024-12-02 15:40:46,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 15:40:46,526 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:40:46,526 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] [2024-12-02 15:40:46,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 15:40:46,526 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:40:46,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:40:46,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1521999719, now seen corresponding path program 1 times [2024-12-02 15:40:46,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:40:46,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057582274] [2024-12-02 15:40:46,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:40:46,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:40:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:40:46,585 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 15:40:46,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:40:46,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057582274] [2024-12-02 15:40:46,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057582274] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:40:46,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:40:46,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:40:46,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538155739] [2024-12-02 15:40:46,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:40:46,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:40:46,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:40:46,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:40:46,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:40:46,587 INFO L87 Difference]: Start difference. First operand 541 states and 810 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:46,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:40:46,616 INFO L93 Difference]: Finished difference Result 1461 states and 2196 transitions. [2024-12-02 15:40:46,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:40:46,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-12-02 15:40:46,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:40:46,619 INFO L225 Difference]: With dead ends: 1461 [2024-12-02 15:40:46,619 INFO L226 Difference]: Without dead ends: 953 [2024-12-02 15:40:46,620 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 15:40:46,621 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 55 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:40:46,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 231 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:40:46,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2024-12-02 15:40:46,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 951. [2024-12-02 15:40:46,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 950 states have (on average 1.48) internal successors, (1406), 950 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:46,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1406 transitions. [2024-12-02 15:40:46,652 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1406 transitions. Word has length 56 [2024-12-02 15:40:46,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:40:46,652 INFO L471 AbstractCegarLoop]: Abstraction has 951 states and 1406 transitions. [2024-12-02 15:40:46,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:46,653 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1406 transitions. [2024-12-02 15:40:46,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 15:40:46,653 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:40:46,653 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] [2024-12-02 15:40:46,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 15:40:46,654 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:40:46,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:40:46,654 INFO L85 PathProgramCache]: Analyzing trace with hash -278689209, now seen corresponding path program 1 times [2024-12-02 15:40:46,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:40:46,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619052510] [2024-12-02 15:40:46,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:40:46,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:40:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:40:46,700 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 15:40:46,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:40:46,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619052510] [2024-12-02 15:40:46,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619052510] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:40:46,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:40:46,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:40:46,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970886224] [2024-12-02 15:40:46,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:40:46,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:40:46,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:40:46,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:40:46,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:40:46,702 INFO L87 Difference]: Start difference. First operand 951 states and 1406 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:46,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:40:46,744 INFO L93 Difference]: Finished difference Result 2595 states and 3816 transitions. [2024-12-02 15:40:46,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:40:46,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-12-02 15:40:46,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:40:46,750 INFO L225 Difference]: With dead ends: 2595 [2024-12-02 15:40:46,750 INFO L226 Difference]: Without dead ends: 1677 [2024-12-02 15:40:46,751 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 15:40:46,751 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 59 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:40:46,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 244 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:40:46,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2024-12-02 15:40:46,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1675. [2024-12-02 15:40:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1674 states have (on average 1.4444444444444444) internal successors, (2418), 1674 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:46,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 2418 transitions. [2024-12-02 15:40:46,793 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 2418 transitions. Word has length 56 [2024-12-02 15:40:46,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:40:46,794 INFO L471 AbstractCegarLoop]: Abstraction has 1675 states and 2418 transitions. [2024-12-02 15:40:46,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:46,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 2418 transitions. [2024-12-02 15:40:46,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 15:40:46,795 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:40:46,795 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 15:40:46,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 15:40:46,795 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:40:46,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:40:46,796 INFO L85 PathProgramCache]: Analyzing trace with hash 878582422, now seen corresponding path program 1 times [2024-12-02 15:40:46,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:40:46,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897417148] [2024-12-02 15:40:46,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:40:46,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:40:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:40:46,884 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:40:46,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:40:46,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897417148] [2024-12-02 15:40:46,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897417148] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:40:46,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:40:46,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:40:46,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336422569] [2024-12-02 15:40:46,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:40:46,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:40:46,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:40:46,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:40:46,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:40:46,885 INFO L87 Difference]: Start difference. First operand 1675 states and 2418 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:46,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:40:46,925 INFO L93 Difference]: Finished difference Result 3319 states and 4804 transitions. [2024-12-02 15:40:46,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:40:46,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-12-02 15:40:46,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:40:46,930 INFO L225 Difference]: With dead ends: 3319 [2024-12-02 15:40:46,930 INFO L226 Difference]: Without dead ends: 1677 [2024-12-02 15:40:46,931 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 15:40:46,932 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 52 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:40:46,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 234 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:40:46,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2024-12-02 15:40:46,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1675. [2024-12-02 15:40:46,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1674 states have (on average 1.4301075268817205) internal successors, (2394), 1674 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:46,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 2394 transitions. [2024-12-02 15:40:46,967 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 2394 transitions. Word has length 79 [2024-12-02 15:40:46,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:40:46,967 INFO L471 AbstractCegarLoop]: Abstraction has 1675 states and 2394 transitions. [2024-12-02 15:40:46,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:46,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 2394 transitions. [2024-12-02 15:40:46,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 15:40:46,968 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:40:46,968 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:40:46,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 15:40:46,969 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:40:46,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:40:46,969 INFO L85 PathProgramCache]: Analyzing trace with hash -606441067, now seen corresponding path program 1 times [2024-12-02 15:40:46,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:40:46,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395799551] [2024-12-02 15:40:46,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:40:46,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:40:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:40:47,057 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:40:47,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:40:47,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395799551] [2024-12-02 15:40:47,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395799551] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:40:47,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:40:47,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:40:47,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9922113] [2024-12-02 15:40:47,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:40:47,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:40:47,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:40:47,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:40:47,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:40:47,059 INFO L87 Difference]: Start difference. First operand 1675 states and 2394 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:47,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:40:47,087 INFO L93 Difference]: Finished difference Result 2499 states and 3576 transitions. [2024-12-02 15:40:47,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:40:47,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-12-02 15:40:47,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:40:47,090 INFO L225 Difference]: With dead ends: 2499 [2024-12-02 15:40:47,091 INFO L226 Difference]: Without dead ends: 857 [2024-12-02 15:40:47,092 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 15:40:47,092 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 46 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:40:47,093 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 215 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:40:47,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2024-12-02 15:40:47,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 855. [2024-12-02 15:40:47,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.4074941451990632) internal successors, (1202), 854 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:47,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1202 transitions. [2024-12-02 15:40:47,113 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1202 transitions. Word has length 79 [2024-12-02 15:40:47,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:40:47,113 INFO L471 AbstractCegarLoop]: Abstraction has 855 states and 1202 transitions. [2024-12-02 15:40:47,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:40:47,113 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1202 transitions. [2024-12-02 15:40:47,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 15:40:47,114 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:40:47,114 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:40:47,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 15:40:47,114 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:40:47,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:40:47,115 INFO L85 PathProgramCache]: Analyzing trace with hash -220192748, now seen corresponding path program 1 times [2024-12-02 15:40:47,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:40:47,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288833292] [2024-12-02 15:40:47,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:40:47,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:40:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:40:49,464 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:40:49,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:40:49,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288833292] [2024-12-02 15:40:49,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288833292] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:40:49,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352559292] [2024-12-02 15:40:49,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:40:49,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:40:49,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:40:49,469 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:40:49,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 15:40:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:40:49,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 15:40:49,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:40:50,055 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:40:50,055 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:40:50,781 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:40:50,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352559292] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:40:50,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:40:50,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 8] total 23 [2024-12-02 15:40:50,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56839213] [2024-12-02 15:40:50,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:40:50,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 15:40:50,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:40:50,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 15:40:50,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2024-12-02 15:40:50,784 INFO L87 Difference]: Start difference. First operand 855 states and 1202 transitions. Second operand has 23 states, 23 states have (on average 10.0) internal successors, (230), 23 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:03,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:41:03,632 INFO L93 Difference]: Finished difference Result 9223 states and 13007 transitions. [2024-12-02 15:41:03,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2024-12-02 15:41:03,632 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.0) internal successors, (230), 23 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-12-02 15:41:03,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:41:03,647 INFO L225 Difference]: With dead ends: 9223 [2024-12-02 15:41:03,648 INFO L226 Difference]: Without dead ends: 8653 [2024-12-02 15:41:03,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15830 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=4956, Invalid=33264, Unknown=0, NotChecked=0, Total=38220 [2024-12-02 15:41:03,654 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 5567 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5567 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:41:03,654 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5567 Valid, 1566 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 15:41:03,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8653 states. [2024-12-02 15:41:03,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8653 to 5826. [2024-12-02 15:41:03,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5826 states, 5825 states have (on average 1.3869527896995708) internal successors, (8079), 5825 states have internal predecessors, (8079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:03,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5826 states to 5826 states and 8079 transitions. [2024-12-02 15:41:03,875 INFO L78 Accepts]: Start accepts. Automaton has 5826 states and 8079 transitions. Word has length 79 [2024-12-02 15:41:03,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:41:03,876 INFO L471 AbstractCegarLoop]: Abstraction has 5826 states and 8079 transitions. [2024-12-02 15:41:03,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.0) internal successors, (230), 23 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:03,876 INFO L276 IsEmpty]: Start isEmpty. Operand 5826 states and 8079 transitions. [2024-12-02 15:41:03,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 15:41:03,877 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:41:03,877 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:41:03,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 15:41:04,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:41:04,078 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:41:04,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:41:04,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1064580840, now seen corresponding path program 1 times [2024-12-02 15:41:04,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:41:04,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89088262] [2024-12-02 15:41:04,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:41:04,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:41:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:41:04,180 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 15:41:04,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:41:04,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89088262] [2024-12-02 15:41:04,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89088262] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:41:04,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:41:04,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:41:04,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221387330] [2024-12-02 15:41:04,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:41:04,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:41:04,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:41:04,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:41:04,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:41:04,181 INFO L87 Difference]: Start difference. First operand 5826 states and 8079 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:04,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:41:04,486 INFO L93 Difference]: Finished difference Result 17531 states and 24499 transitions. [2024-12-02 15:41:04,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:41:04,487 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-12-02 15:41:04,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:41:04,527 INFO L225 Difference]: With dead ends: 17531 [2024-12-02 15:41:04,527 INFO L226 Difference]: Without dead ends: 14485 [2024-12-02 15:41:04,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:41:04,533 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 511 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:41:04,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 602 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:41:04,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14485 states. [2024-12-02 15:41:04,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14485 to 8702. [2024-12-02 15:41:04,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8702 states, 8701 states have (on average 1.3821399839098953) internal successors, (12026), 8701 states have internal predecessors, (12026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:04,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 12026 transitions. [2024-12-02 15:41:04,896 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 12026 transitions. Word has length 80 [2024-12-02 15:41:04,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:41:04,897 INFO L471 AbstractCegarLoop]: Abstraction has 8702 states and 12026 transitions. [2024-12-02 15:41:04,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:04,897 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 12026 transitions. [2024-12-02 15:41:04,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 15:41:04,899 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:41:04,899 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:41:04,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 15:41:04,899 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:41:04,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:41:04,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1140343444, now seen corresponding path program 1 times [2024-12-02 15:41:04,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:41:04,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832345833] [2024-12-02 15:41:04,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:41:04,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:41:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:41:05,029 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 15:41:05,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:41:05,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832345833] [2024-12-02 15:41:05,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832345833] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:41:05,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:41:05,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:41:05,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165515659] [2024-12-02 15:41:05,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:41:05,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:41:05,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:41:05,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:41:05,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:41:05,031 INFO L87 Difference]: Start difference. First operand 8702 states and 12026 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:05,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:41:05,470 INFO L93 Difference]: Finished difference Result 20407 states and 28446 transitions. [2024-12-02 15:41:05,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:41:05,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-12-02 15:41:05,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:41:05,506 INFO L225 Difference]: With dead ends: 20407 [2024-12-02 15:41:05,507 INFO L226 Difference]: Without dead ends: 17361 [2024-12-02 15:41:05,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:41:05,514 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 507 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:41:05,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 597 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:41:05,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17361 states. [2024-12-02 15:41:05,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17361 to 11578. [2024-12-02 15:41:05,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 11577 states have (on average 1.3797184071866633) internal successors, (15973), 11577 states have internal predecessors, (15973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:05,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 15973 transitions. [2024-12-02 15:41:05,905 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 15973 transitions. Word has length 80 [2024-12-02 15:41:05,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:41:05,906 INFO L471 AbstractCegarLoop]: Abstraction has 11578 states and 15973 transitions. [2024-12-02 15:41:05,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:05,906 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 15973 transitions. [2024-12-02 15:41:05,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 15:41:05,908 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:41:05,908 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:41:05,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 15:41:05,908 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:41:05,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:41:05,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1039278506, now seen corresponding path program 1 times [2024-12-02 15:41:05,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:41:05,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244553627] [2024-12-02 15:41:05,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:41:05,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:41:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:41:06,039 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 15:41:06,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:41:06,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244553627] [2024-12-02 15:41:06,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244553627] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:41:06,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:41:06,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:41:06,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142284466] [2024-12-02 15:41:06,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:41:06,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:41:06,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:41:06,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:41:06,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:41:06,041 INFO L87 Difference]: Start difference. First operand 11578 states and 15973 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:06,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:41:06,461 INFO L93 Difference]: Finished difference Result 23283 states and 32393 transitions. [2024-12-02 15:41:06,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:41:06,461 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-12-02 15:41:06,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:41:06,488 INFO L225 Difference]: With dead ends: 23283 [2024-12-02 15:41:06,488 INFO L226 Difference]: Without dead ends: 20237 [2024-12-02 15:41:06,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:41:06,493 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 462 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:41:06,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 667 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:41:06,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20237 states. [2024-12-02 15:41:06,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20237 to 14454. [2024-12-02 15:41:06,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14454 states, 14453 states have (on average 1.378260568740054) internal successors, (19920), 14453 states have internal predecessors, (19920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:06,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14454 states to 14454 states and 19920 transitions. [2024-12-02 15:41:06,925 INFO L78 Accepts]: Start accepts. Automaton has 14454 states and 19920 transitions. Word has length 80 [2024-12-02 15:41:06,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:41:06,925 INFO L471 AbstractCegarLoop]: Abstraction has 14454 states and 19920 transitions. [2024-12-02 15:41:06,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:06,926 INFO L276 IsEmpty]: Start isEmpty. Operand 14454 states and 19920 transitions. [2024-12-02 15:41:06,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 15:41:06,927 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:41:06,927 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:41:06,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 15:41:06,927 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:41:06,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:41:06,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1250958919, now seen corresponding path program 1 times [2024-12-02 15:41:06,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:41:06,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434312928] [2024-12-02 15:41:06,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:41:06,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:41:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:41:07,041 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 15:41:07,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:41:07,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434312928] [2024-12-02 15:41:07,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434312928] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:41:07,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:41:07,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:41:07,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529338711] [2024-12-02 15:41:07,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:41:07,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:41:07,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:41:07,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:41:07,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:41:07,042 INFO L87 Difference]: Start difference. First operand 14454 states and 19920 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:07,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:41:07,619 INFO L93 Difference]: Finished difference Result 25460 states and 35352 transitions. [2024-12-02 15:41:07,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:41:07,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-12-02 15:41:07,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:41:07,644 INFO L225 Difference]: With dead ends: 25460 [2024-12-02 15:41:07,644 INFO L226 Difference]: Without dead ends: 22827 [2024-12-02 15:41:07,652 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:41:07,652 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 509 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:41:07,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 669 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:41:07,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22827 states. [2024-12-02 15:41:08,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22827 to 17044. [2024-12-02 15:41:08,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17044 states, 17043 states have (on average 1.3771636448981988) internal successors, (23471), 17043 states have internal predecessors, (23471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:08,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17044 states to 17044 states and 23471 transitions. [2024-12-02 15:41:08,220 INFO L78 Accepts]: Start accepts. Automaton has 17044 states and 23471 transitions. Word has length 80 [2024-12-02 15:41:08,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:41:08,220 INFO L471 AbstractCegarLoop]: Abstraction has 17044 states and 23471 transitions. [2024-12-02 15:41:08,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:08,220 INFO L276 IsEmpty]: Start isEmpty. Operand 17044 states and 23471 transitions. [2024-12-02 15:41:08,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-12-02 15:41:08,221 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:41:08,221 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:41:08,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 15:41:08,222 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:41:08,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:41:08,222 INFO L85 PathProgramCache]: Analyzing trace with hash -905229380, now seen corresponding path program 1 times [2024-12-02 15:41:08,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:41:08,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656007107] [2024-12-02 15:41:08,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:41:08,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:41:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:41:08,285 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:41:08,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:41:08,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656007107] [2024-12-02 15:41:08,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656007107] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:41:08,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:41:08,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:41:08,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680040376] [2024-12-02 15:41:08,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:41:08,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:41:08,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:41:08,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:41:08,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:41:08,287 INFO L87 Difference]: Start difference. First operand 17044 states and 23471 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:08,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:41:08,439 INFO L93 Difference]: Finished difference Result 24804 states and 33923 transitions. [2024-12-02 15:41:08,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:41:08,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-12-02 15:41:08,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:41:08,447 INFO L225 Difference]: With dead ends: 24804 [2024-12-02 15:41:08,447 INFO L226 Difference]: Without dead ends: 7793 [2024-12-02 15:41:08,456 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 15:41:08,456 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 34 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:41:08,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 210 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:41:08,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7793 states. [2024-12-02 15:41:08,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7793 to 6591. [2024-12-02 15:41:08,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6591 states, 6590 states have (on average 1.3644916540212444) internal successors, (8992), 6590 states have internal predecessors, (8992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:08,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6591 states to 6591 states and 8992 transitions. [2024-12-02 15:41:08,679 INFO L78 Accepts]: Start accepts. Automaton has 6591 states and 8992 transitions. Word has length 83 [2024-12-02 15:41:08,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:41:08,680 INFO L471 AbstractCegarLoop]: Abstraction has 6591 states and 8992 transitions. [2024-12-02 15:41:08,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:08,680 INFO L276 IsEmpty]: Start isEmpty. Operand 6591 states and 8992 transitions. [2024-12-02 15:41:08,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-12-02 15:41:08,681 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:41:08,682 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:41:08,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 15:41:08,682 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:41:08,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:41:08,683 INFO L85 PathProgramCache]: Analyzing trace with hash 296332665, now seen corresponding path program 1 times [2024-12-02 15:41:08,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:41:08,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302971510] [2024-12-02 15:41:08,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:41:08,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:41:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:41:09,090 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:41:09,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:41:09,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302971510] [2024-12-02 15:41:09,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302971510] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:41:09,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452491476] [2024-12-02 15:41:09,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:41:09,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:41:09,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:41:09,092 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:41:09,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 15:41:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:41:09,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 15:41:09,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:41:09,642 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:41:09,642 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:41:10,475 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:41:10,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452491476] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:41:10,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:41:10,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-12-02 15:41:10,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966679415] [2024-12-02 15:41:10,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:41:10,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 15:41:10,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:41:10,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 15:41:10,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2024-12-02 15:41:10,477 INFO L87 Difference]: Start difference. First operand 6591 states and 8992 transitions. Second operand has 22 states, 22 states have (on average 8.590909090909092) internal successors, (189), 21 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:11,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:41:11,094 INFO L93 Difference]: Finished difference Result 23516 states and 32159 transitions. [2024-12-02 15:41:11,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 15:41:11,094 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.590909090909092) internal successors, (189), 21 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-12-02 15:41:11,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:41:11,107 INFO L225 Difference]: With dead ends: 23516 [2024-12-02 15:41:11,107 INFO L226 Difference]: Without dead ends: 17367 [2024-12-02 15:41:11,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=301, Invalid=821, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 15:41:11,113 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 1095 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:41:11,113 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 620 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:41:11,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17367 states. [2024-12-02 15:41:11,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17367 to 16108. [2024-12-02 15:41:11,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16108 states, 16107 states have (on average 1.3553734401192028) internal successors, (21831), 16107 states have internal predecessors, (21831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:11,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16108 states to 16108 states and 21831 transitions. [2024-12-02 15:41:11,437 INFO L78 Accepts]: Start accepts. Automaton has 16108 states and 21831 transitions. Word has length 83 [2024-12-02 15:41:11,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:41:11,437 INFO L471 AbstractCegarLoop]: Abstraction has 16108 states and 21831 transitions. [2024-12-02 15:41:11,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.590909090909092) internal successors, (189), 21 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:11,437 INFO L276 IsEmpty]: Start isEmpty. Operand 16108 states and 21831 transitions. [2024-12-02 15:41:11,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-12-02 15:41:11,439 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:41:11,439 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:41:11,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 15:41:11,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:41:11,640 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:41:11,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:41:11,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1908591619, now seen corresponding path program 1 times [2024-12-02 15:41:11,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:41:11,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743056015] [2024-12-02 15:41:11,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:41:11,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:41:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:41:12,578 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:41:12,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:41:12,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743056015] [2024-12-02 15:41:12,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743056015] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:41:12,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9151633] [2024-12-02 15:41:12,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:41:12,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:41:12,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:41:12,580 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:41:12,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 15:41:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:41:12,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 15:41:12,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:41:13,263 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:41:13,263 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:41:14,351 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:41:14,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9151633] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:41:14,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:41:14,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 34 [2024-12-02 15:41:14,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74334075] [2024-12-02 15:41:14,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:41:14,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 15:41:14,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:41:14,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 15:41:14,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=963, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 15:41:14,353 INFO L87 Difference]: Start difference. First operand 16108 states and 21831 transitions. Second operand has 34 states, 34 states have (on average 6.352941176470588) internal successors, (216), 34 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:22,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:41:22,171 INFO L93 Difference]: Finished difference Result 98764 states and 134993 transitions. [2024-12-02 15:41:22,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2024-12-02 15:41:22,171 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.352941176470588) internal successors, (216), 34 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-12-02 15:41:22,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:41:22,234 INFO L225 Difference]: With dead ends: 98764 [2024-12-02 15:41:22,234 INFO L226 Difference]: Without dead ends: 83451 [2024-12-02 15:41:22,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7974 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=3524, Invalid=19126, Unknown=0, NotChecked=0, Total=22650 [2024-12-02 15:41:22,254 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 6633 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6633 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 2007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:41:22,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6633 Valid, 1786 Invalid, 2007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1824 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 15:41:22,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83451 states. [2024-12-02 15:41:23,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83451 to 36927. [2024-12-02 15:41:23,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36927 states, 36926 states have (on average 1.3612901478632942) internal successors, (50267), 36926 states have internal predecessors, (50267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:23,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36927 states to 36927 states and 50267 transitions. [2024-12-02 15:41:23,187 INFO L78 Accepts]: Start accepts. Automaton has 36927 states and 50267 transitions. Word has length 83 [2024-12-02 15:41:23,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:41:23,187 INFO L471 AbstractCegarLoop]: Abstraction has 36927 states and 50267 transitions. [2024-12-02 15:41:23,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.352941176470588) internal successors, (216), 34 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:23,188 INFO L276 IsEmpty]: Start isEmpty. Operand 36927 states and 50267 transitions. [2024-12-02 15:41:23,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-12-02 15:41:23,189 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:41:23,189 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:41:23,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 15:41:23,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:41:23,390 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:41:23,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:41:23,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1951400860, now seen corresponding path program 1 times [2024-12-02 15:41:23,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:41:23,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963990778] [2024-12-02 15:41:23,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:41:23,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:41:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:41:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:41:23,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:41:23,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963990778] [2024-12-02 15:41:23,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963990778] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:41:23,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:41:23,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:41:23,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900588197] [2024-12-02 15:41:23,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:41:23,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:41:23,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:41:23,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:41:23,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:41:23,490 INFO L87 Difference]: Start difference. First operand 36927 states and 50267 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:23,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:41:23,851 INFO L93 Difference]: Finished difference Result 57908 states and 78824 transitions. [2024-12-02 15:41:23,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:41:23,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-12-02 15:41:23,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:41:23,868 INFO L225 Difference]: With dead ends: 57908 [2024-12-02 15:41:23,868 INFO L226 Difference]: Without dead ends: 22865 [2024-12-02 15:41:23,883 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 15:41:23,884 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 25 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:41:23,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 191 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:41:23,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22865 states. [2024-12-02 15:41:24,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22865 to 22863. [2024-12-02 15:41:24,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22863 states, 22862 states have (on average 1.3389904645262882) internal successors, (30612), 22862 states have internal predecessors, (30612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:24,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22863 states to 22863 states and 30612 transitions. [2024-12-02 15:41:24,434 INFO L78 Accepts]: Start accepts. Automaton has 22863 states and 30612 transitions. Word has length 83 [2024-12-02 15:41:24,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:41:24,434 INFO L471 AbstractCegarLoop]: Abstraction has 22863 states and 30612 transitions. [2024-12-02 15:41:24,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:24,434 INFO L276 IsEmpty]: Start isEmpty. Operand 22863 states and 30612 transitions. [2024-12-02 15:41:24,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-12-02 15:41:24,436 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:41:24,436 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:41:24,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 15:41:24,436 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:41:24,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:41:24,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1160486208, now seen corresponding path program 1 times [2024-12-02 15:41:24,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:41:24,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53271414] [2024-12-02 15:41:24,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:41:24,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:41:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:41:24,860 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:41:24,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:41:24,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53271414] [2024-12-02 15:41:24,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53271414] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:41:24,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426438241] [2024-12-02 15:41:24,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:41:24,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:41:24,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:41:24,862 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:41:24,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 15:41:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:41:24,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 15:41:24,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:41:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:41:25,548 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:41:26,462 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:41:26,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426438241] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:41:26,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:41:26,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 32 [2024-12-02 15:41:26,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368248742] [2024-12-02 15:41:26,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:41:26,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 15:41:26,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:41:26,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 15:41:26,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2024-12-02 15:41:26,464 INFO L87 Difference]: Start difference. First operand 22863 states and 30612 transitions. Second operand has 32 states, 32 states have (on average 6.90625) internal successors, (221), 32 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:34,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:41:34,108 INFO L93 Difference]: Finished difference Result 189155 states and 250623 transitions. [2024-12-02 15:41:34,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-12-02 15:41:34,109 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.90625) internal successors, (221), 32 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-12-02 15:41:34,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:41:34,232 INFO L225 Difference]: With dead ends: 189155 [2024-12-02 15:41:34,232 INFO L226 Difference]: Without dead ends: 166421 [2024-12-02 15:41:34,263 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4214 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2324, Invalid=11016, Unknown=0, NotChecked=0, Total=13340 [2024-12-02 15:41:34,264 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 2718 mSDsluCounter, 1563 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2718 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:41:34,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2718 Valid, 1656 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 15:41:34,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166421 states. [2024-12-02 15:41:38,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166421 to 149571. [2024-12-02 15:41:38,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149571 states, 149570 states have (on average 1.3247108377348398) internal successors, (198137), 149570 states have internal predecessors, (198137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:38,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149571 states to 149571 states and 198137 transitions. [2024-12-02 15:41:38,822 INFO L78 Accepts]: Start accepts. Automaton has 149571 states and 198137 transitions. Word has length 83 [2024-12-02 15:41:38,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:41:38,823 INFO L471 AbstractCegarLoop]: Abstraction has 149571 states and 198137 transitions. [2024-12-02 15:41:38,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.90625) internal successors, (221), 32 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:41:38,823 INFO L276 IsEmpty]: Start isEmpty. Operand 149571 states and 198137 transitions. [2024-12-02 15:41:38,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 15:41:38,826 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:41:38,826 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:41:38,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 15:41:39,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:41:39,027 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:41:39,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:41:39,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1634981823, now seen corresponding path program 1 times [2024-12-02 15:41:39,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:41:39,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783024271] [2024-12-02 15:41:39,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:41:39,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:41:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:41:39,792 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:41:39,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:41:39,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783024271] [2024-12-02 15:41:39,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783024271] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:41:39,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635322488] [2024-12-02 15:41:39,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:41:39,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:41:39,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:41:39,794 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:41:39,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 15:41:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:41:39,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 15:41:39,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:41:40,751 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:41:40,751 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:41:42,739 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:41:42,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635322488] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:41:42,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:41:42,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 17] total 41 [2024-12-02 15:41:42,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060968388] [2024-12-02 15:41:42,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:41:42,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 15:41:42,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:41:42,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 15:41:42,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1467, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 15:41:42,741 INFO L87 Difference]: Start difference. First operand 149571 states and 198137 transitions. Second operand has 41 states, 41 states have (on average 5.780487804878049) internal successors, (237), 41 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:11,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:11,064 INFO L93 Difference]: Finished difference Result 901379 states and 1196831 transitions. [2024-12-02 15:42:11,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2024-12-02 15:42:11,064 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.780487804878049) internal successors, (237), 41 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-12-02 15:42:11,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:11,796 INFO L225 Difference]: With dead ends: 901379 [2024-12-02 15:42:11,796 INFO L226 Difference]: Without dead ends: 752302 [2024-12-02 15:42:11,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19062 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=8961, Invalid=37479, Unknown=0, NotChecked=0, Total=46440 [2024-12-02 15:42:11,916 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 10838 mSDsluCounter, 2854 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10838 SdHoareTripleChecker+Valid, 2964 SdHoareTripleChecker+Invalid, 2729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:11,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10838 Valid, 2964 Invalid, 2729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 15:42:12,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752302 states. [2024-12-02 15:42:25,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752302 to 395628. [2024-12-02 15:42:25,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395628 states, 395627 states have (on average 1.3259155719907894) internal successors, (524568), 395627 states have internal predecessors, (524568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:26,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395628 states to 395628 states and 524568 transitions. [2024-12-02 15:42:26,365 INFO L78 Accepts]: Start accepts. Automaton has 395628 states and 524568 transitions. Word has length 84 [2024-12-02 15:42:26,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:26,365 INFO L471 AbstractCegarLoop]: Abstraction has 395628 states and 524568 transitions. [2024-12-02 15:42:26,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.780487804878049) internal successors, (237), 41 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:26,365 INFO L276 IsEmpty]: Start isEmpty. Operand 395628 states and 524568 transitions. [2024-12-02 15:42:26,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-12-02 15:42:26,367 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:26,367 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:26,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 15:42:26,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:26,568 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:26,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:26,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1701908165, now seen corresponding path program 1 times [2024-12-02 15:42:26,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:26,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936074728] [2024-12-02 15:42:26,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:42:26,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:42:26,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:26,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936074728] [2024-12-02 15:42:26,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936074728] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:42:26,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:42:26,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:42:26,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488751193] [2024-12-02 15:42:26,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:42:26,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:42:26,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:26,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:42:26,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:42:26,605 INFO L87 Difference]: Start difference. First operand 395628 states and 524568 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:38,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:38,630 INFO L93 Difference]: Finished difference Result 841010 states and 1110461 transitions. [2024-12-02 15:42:38,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:42:38,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-12-02 15:42:38,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:39,065 INFO L225 Difference]: With dead ends: 841010 [2024-12-02 15:42:39,065 INFO L226 Difference]: Without dead ends: 451138 [2024-12-02 15:42:39,157 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 15:42:39,157 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 45 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:39,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 228 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:42:39,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451138 states. [2024-12-02 15:42:52,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451138 to 451136. [2024-12-02 15:42:52,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451136 states, 451135 states have (on average 1.297560597160495) internal successors, (585375), 451135 states have internal predecessors, (585375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:52,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451136 states to 451136 states and 585375 transitions. [2024-12-02 15:42:53,003 INFO L78 Accepts]: Start accepts. Automaton has 451136 states and 585375 transitions. Word has length 85 [2024-12-02 15:42:53,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:53,003 INFO L471 AbstractCegarLoop]: Abstraction has 451136 states and 585375 transitions. [2024-12-02 15:42:53,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:53,003 INFO L276 IsEmpty]: Start isEmpty. Operand 451136 states and 585375 transitions. [2024-12-02 15:42:53,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-12-02 15:42:53,005 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:53,005 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:53,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 15:42:53,006 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:53,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:53,006 INFO L85 PathProgramCache]: Analyzing trace with hash 578793793, now seen corresponding path program 1 times [2024-12-02 15:42:53,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:53,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356041331] [2024-12-02 15:42:53,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:42:53,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:42:53,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:53,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356041331] [2024-12-02 15:42:53,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356041331] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:53,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874029776] [2024-12-02 15:42:53,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:42:53,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:53,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:53,837 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:53,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f678635-8788-4411-9f5f-e25b877b2bcd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 15:42:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:53,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-02 15:42:53,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:55,621 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:42:55,622 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:59,961 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:42:59,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874029776] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:59,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:59,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 18] total 43 [2024-12-02 15:42:59,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556002893] [2024-12-02 15:42:59,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:59,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-12-02 15:42:59,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:59,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-12-02 15:42:59,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1577, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 15:42:59,963 INFO L87 Difference]: Start difference. First operand 451136 states and 585375 transitions. Second operand has 43 states, 43 states have (on average 5.0) internal successors, (215), 43 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:03,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:03,990 INFO L93 Difference]: Finished difference Result 2237941 states and 2916738 transitions. [2024-12-02 15:44:03,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2024-12-02 15:44:03,990 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.0) internal successors, (215), 43 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-12-02 15:44:03,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:06,136 INFO L225 Difference]: With dead ends: 2237941 [2024-12-02 15:44:06,136 INFO L226 Difference]: Without dead ends: 1787005 [2024-12-02 15:44:06,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12109 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=6763, Invalid=23339, Unknown=0, NotChecked=0, Total=30102 [2024-12-02 15:44:06,451 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 5224 mSDsluCounter, 3268 mSDsCounter, 0 mSdLazyCounter, 2947 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5224 SdHoareTripleChecker+Valid, 3402 SdHoareTripleChecker+Invalid, 3097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:06,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5224 Valid, 3402 Invalid, 3097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 2947 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 15:44:07,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787005 states.