./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.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_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/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_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/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_42d11fea-9122-4261-aed8-7cbcbcfd55a0/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 20bccc5c4039b31e1359e00bb81f308547d82590fa0687937b9518c1e6a7a105 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:06:50,223 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:06:50,278 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 13:06:50,283 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:06:50,283 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:06:50,303 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:06:50,304 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:06:50,304 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:06:50,304 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:06:50,304 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:06:50,304 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:06:50,304 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:06:50,305 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:06:50,305 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:06:50,305 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:06:50,305 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:06:50,305 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 13:06:50,305 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 13:06:50,305 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 13:06:50,305 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 13:06:50,306 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:06:50,306 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 13:06:50,306 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:06:50,306 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 13:06:50,306 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 13:06:50,306 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 13:06:50,306 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:06:50,306 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:06:50,306 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:06:50,306 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:06:50,306 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:06:50,306 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:06:50,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:06:50,307 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:06:50,307 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:06:50,307 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:06:50,307 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:06:50,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:06:50,307 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:06:50,307 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:06:50,307 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 13:06:50,307 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 13:06:50,307 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 13:06:50,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 13:06:50,307 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:06:50,307 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:06:50,308 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:06:50,308 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:06:50,308 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_42d11fea-9122-4261-aed8-7cbcbcfd55a0/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 -> 20bccc5c4039b31e1359e00bb81f308547d82590fa0687937b9518c1e6a7a105 [2024-12-02 13:06:50,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:06:50,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:06:50,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:06:50,559 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:06:50,559 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:06:50,561 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c [2024-12-02 13:06:53,190 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/data/fb38bcccc/652a55138b91424ba123dd5f32b2efcf/FLAGdb410e271 [2024-12-02 13:06:53,583 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:06:53,584 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c [2024-12-02 13:06:53,609 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/data/fb38bcccc/652a55138b91424ba123dd5f32b2efcf/FLAGdb410e271 [2024-12-02 13:06:53,624 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/data/fb38bcccc/652a55138b91424ba123dd5f32b2efcf [2024-12-02 13:06:53,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:06:53,627 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:06:53,628 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:06:53,628 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:06:53,631 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:06:53,632 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:06:53" (1/1) ... [2024-12-02 13:06:53,633 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a858bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:53, skipping insertion in model container [2024-12-02 13:06:53,633 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:06:53" (1/1) ... [2024-12-02 13:06:53,739 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:06:53,985 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_42d11fea-9122-4261-aed8-7cbcbcfd55a0/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[6354,6367] [2024-12-02 13:06:54,020 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_42d11fea-9122-4261-aed8-7cbcbcfd55a0/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[9861,9874] [2024-12-02 13:06:54,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:06:54,568 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:06:54,591 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_42d11fea-9122-4261-aed8-7cbcbcfd55a0/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[6354,6367] [2024-12-02 13:06:54,598 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_42d11fea-9122-4261-aed8-7cbcbcfd55a0/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[9861,9874] [2024-12-02 13:06:54,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:06:54,982 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:06:54,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:54 WrapperNode [2024-12-02 13:06:54,983 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:06:54,984 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:06:54,984 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:06:54,984 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:06:54,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:54" (1/1) ... [2024-12-02 13:06:55,033 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:54" (1/1) ... [2024-12-02 13:06:55,327 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4981 [2024-12-02 13:06:55,327 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:06:55,328 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:06:55,328 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:06:55,328 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:06:55,334 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:54" (1/1) ... [2024-12-02 13:06:55,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:54" (1/1) ... [2024-12-02 13:06:55,366 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:54" (1/1) ... [2024-12-02 13:06:55,482 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 13:06:55,483 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:54" (1/1) ... [2024-12-02 13:06:55,483 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:54" (1/1) ... [2024-12-02 13:06:55,574 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:54" (1/1) ... [2024-12-02 13:06:55,585 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:54" (1/1) ... [2024-12-02 13:06:55,608 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:54" (1/1) ... [2024-12-02 13:06:55,621 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:54" (1/1) ... [2024-12-02 13:06:55,632 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:54" (1/1) ... [2024-12-02 13:06:55,681 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:06:55,682 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:06:55,682 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:06:55,682 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:06:55,683 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:54" (1/1) ... [2024-12-02 13:06:55,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:06:55,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:06:55,707 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:06:55,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:06:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:06:55,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 13:06:55,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:06:55,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:06:55,807 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:06:55,809 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:07:00,269 INFO L? ?]: Removed 732 outVars from TransFormulas that were not future-live. [2024-12-02 13:07:00,270 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:07:00,301 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:07:00,302 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 13:07:00,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:07:00 BoogieIcfgContainer [2024-12-02 13:07:00,302 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:07:00,305 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:07:00,305 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:07:00,309 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:07:00,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:06:53" (1/3) ... [2024-12-02 13:07:00,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f57b4d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:07:00, skipping insertion in model container [2024-12-02 13:07:00,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:54" (2/3) ... [2024-12-02 13:07:00,311 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f57b4d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:07:00, skipping insertion in model container [2024-12-02 13:07:00,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:07:00" (3/3) ... [2024-12-02 13:07:00,312 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c [2024-12-02 13:07:00,325 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:07:00,327 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c that has 1 procedures, 873 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-02 13:07:00,392 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:07:00,402 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;@1ac8a530, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:07:00,402 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 13:07:00,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 873 states, 870 states have (on average 1.9057471264367816) internal successors, (1658), 872 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:00,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-02 13:07:00,413 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:00,413 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] [2024-12-02 13:07:00,414 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:00,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:00,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1661669358, now seen corresponding path program 1 times [2024-12-02 13:07:00,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:00,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081400609] [2024-12-02 13:07:00,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:00,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:00,588 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 13:07:00,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:00,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081400609] [2024-12-02 13:07:00,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081400609] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:07:00,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:07:00,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:07:00,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404906210] [2024-12-02 13:07:00,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:07:00,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 13:07:00,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:00,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 13:07:00,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 13:07:00,613 INFO L87 Difference]: Start difference. First operand has 873 states, 870 states have (on average 1.9057471264367816) internal successors, (1658), 872 states have internal predecessors, (1658), 0 states have call successors, (0), 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 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:00,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:00,683 INFO L93 Difference]: Finished difference Result 1724 states and 3276 transitions. [2024-12-02 13:07:00,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 13:07:00,685 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-12-02 13:07:00,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:00,699 INFO L225 Difference]: With dead ends: 1724 [2024-12-02 13:07:00,700 INFO L226 Difference]: Without dead ends: 807 [2024-12-02 13:07:00,705 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 13:07:00,707 INFO L435 NwaCegarLoop]: 1592 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, 1592 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 13:07:00,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:07:00,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2024-12-02 13:07:00,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 807. [2024-12-02 13:07:00,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 805 states have (on average 1.8944099378881987) internal successors, (1525), 806 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:00,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1525 transitions. [2024-12-02 13:07:00,772 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1525 transitions. Word has length 21 [2024-12-02 13:07:00,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:00,773 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1525 transitions. [2024-12-02 13:07:00,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:00,773 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1525 transitions. [2024-12-02 13:07:00,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-02 13:07:00,774 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:00,774 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] [2024-12-02 13:07:00,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 13:07:00,775 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:00,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:00,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1353434260, now seen corresponding path program 1 times [2024-12-02 13:07:00,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:00,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785823378] [2024-12-02 13:07:00,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:00,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:00,953 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 13:07:00,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:00,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785823378] [2024-12-02 13:07:00,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785823378] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:07:00,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:07:00,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:07:00,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34467428] [2024-12-02 13:07:00,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:07:00,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:07:00,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:00,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:07:00,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:07:00,956 INFO L87 Difference]: Start difference. First operand 807 states and 1525 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:01,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:01,054 INFO L93 Difference]: Finished difference Result 873 states and 1625 transitions. [2024-12-02 13:07:01,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:07:01,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-12-02 13:07:01,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:01,060 INFO L225 Difference]: With dead ends: 873 [2024-12-02 13:07:01,060 INFO L226 Difference]: Without dead ends: 838 [2024-12-02 13:07:01,061 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 13:07:01,061 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 47 mSDsluCounter, 4541 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 6062 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:01,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 6062 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:07:01,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-12-02 13:07:01,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 807. [2024-12-02 13:07:01,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 805 states have (on average 1.8745341614906832) internal successors, (1509), 806 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:01,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1509 transitions. [2024-12-02 13:07:01,080 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1509 transitions. Word has length 21 [2024-12-02 13:07:01,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:01,080 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1509 transitions. [2024-12-02 13:07:01,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:01,080 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1509 transitions. [2024-12-02 13:07:01,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-12-02 13:07:01,081 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:01,081 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 13:07:01,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 13:07:01,081 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:01,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:01,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2102639597, now seen corresponding path program 1 times [2024-12-02 13:07:01,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:01,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304380324] [2024-12-02 13:07:01,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:01,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:01,160 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 13:07:01,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:01,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304380324] [2024-12-02 13:07:01,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304380324] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:07:01,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:07:01,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:07:01,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603536060] [2024-12-02 13:07:01,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:07:01,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:07:01,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:01,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:07:01,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:07:01,162 INFO L87 Difference]: Start difference. First operand 807 states and 1509 transitions. Second operand has 3 states, 3 states have (on average 10.0) 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 13:07:04,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:04,706 INFO L93 Difference]: Finished difference Result 2311 states and 4382 transitions. [2024-12-02 13:07:04,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:07:04,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) 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 13:07:04,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:04,715 INFO L225 Difference]: With dead ends: 2311 [2024-12-02 13:07:04,715 INFO L226 Difference]: Without dead ends: 1558 [2024-12-02 13:07:04,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:07:04,717 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 909 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:04,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 185 Invalid, 3088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 13:07:04,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2024-12-02 13:07:04,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1558. [2024-12-02 13:07:04,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1556 states have (on average 1.8303341902313626) internal successors, (2848), 1557 states have internal predecessors, (2848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:04,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2848 transitions. [2024-12-02 13:07:04,777 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2848 transitions. Word has length 30 [2024-12-02 13:07:04,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:04,778 INFO L471 AbstractCegarLoop]: Abstraction has 1558 states and 2848 transitions. [2024-12-02 13:07:04,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) 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 13:07:04,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2848 transitions. [2024-12-02 13:07:04,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-12-02 13:07:04,779 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:04,779 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] [2024-12-02 13:07:04,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 13:07:04,779 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:04,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:04,780 INFO L85 PathProgramCache]: Analyzing trace with hash 904930012, now seen corresponding path program 1 times [2024-12-02 13:07:04,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:04,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290219975] [2024-12-02 13:07:04,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:04,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:04,911 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 13:07:04,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:04,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290219975] [2024-12-02 13:07:04,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290219975] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:07:04,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:07:04,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:07:04,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222514079] [2024-12-02 13:07:04,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:07:04,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:07:04,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:04,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:07:04,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:07:04,913 INFO L87 Difference]: Start difference. First operand 1558 states and 2848 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:05,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:05,050 INFO L93 Difference]: Finished difference Result 1744 states and 3136 transitions. [2024-12-02 13:07:05,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 13:07:05,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2024-12-02 13:07:05,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:05,058 INFO L225 Difference]: With dead ends: 1744 [2024-12-02 13:07:05,058 INFO L226 Difference]: Without dead ends: 1713 [2024-12-02 13:07:05,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:07:05,060 INFO L435 NwaCegarLoop]: 1503 mSDtfsCounter, 4627 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4627 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:05,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4627 Valid, 1775 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:07:05,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2024-12-02 13:07:05,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1587. [2024-12-02 13:07:05,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1587 states, 1585 states have (on average 1.825236593059937) internal successors, (2893), 1586 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:05,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 2893 transitions. [2024-12-02 13:07:05,110 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 2893 transitions. Word has length 36 [2024-12-02 13:07:05,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:05,111 INFO L471 AbstractCegarLoop]: Abstraction has 1587 states and 2893 transitions. [2024-12-02 13:07:05,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:05,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 2893 transitions. [2024-12-02 13:07:05,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 13:07:05,112 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:05,112 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] [2024-12-02 13:07:05,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 13:07:05,112 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:05,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:05,113 INFO L85 PathProgramCache]: Analyzing trace with hash 638646444, now seen corresponding path program 1 times [2024-12-02 13:07:05,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:05,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352194082] [2024-12-02 13:07:05,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:05,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:05,184 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 13:07:05,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:05,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352194082] [2024-12-02 13:07:05,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352194082] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:07:05,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:07:05,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:07:05,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466187109] [2024-12-02 13:07:05,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:07:05,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:07:05,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:05,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:07:05,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:07:05,186 INFO L87 Difference]: Start difference. First operand 1587 states and 2893 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:05,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:05,227 INFO L93 Difference]: Finished difference Result 1696 states and 3060 transitions. [2024-12-02 13:07:05,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:07:05,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2024-12-02 13:07:05,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:05,234 INFO L225 Difference]: With dead ends: 1696 [2024-12-02 13:07:05,234 INFO L226 Difference]: Without dead ends: 1636 [2024-12-02 13:07:05,235 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 13:07:05,235 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 1466 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:05,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1549 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:07:05,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2024-12-02 13:07:05,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1634. [2024-12-02 13:07:05,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1632 states have (on average 1.8155637254901962) internal successors, (2963), 1633 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:05,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2963 transitions. [2024-12-02 13:07:05,287 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2963 transitions. Word has length 38 [2024-12-02 13:07:05,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:05,287 INFO L471 AbstractCegarLoop]: Abstraction has 1634 states and 2963 transitions. [2024-12-02 13:07:05,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:05,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2963 transitions. [2024-12-02 13:07:05,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 13:07:05,289 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:05,289 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] [2024-12-02 13:07:05,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 13:07:05,289 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:05,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:05,289 INFO L85 PathProgramCache]: Analyzing trace with hash 705139956, now seen corresponding path program 1 times [2024-12-02 13:07:05,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:05,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288927927] [2024-12-02 13:07:05,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:05,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:05,473 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 13:07:05,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:05,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288927927] [2024-12-02 13:07:05,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288927927] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:07:05,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:07:05,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:07:05,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829280463] [2024-12-02 13:07:05,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:07:05,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:07:05,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:05,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:07:05,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:07:05,475 INFO L87 Difference]: Start difference. First operand 1634 states and 2963 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:05,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:05,557 INFO L93 Difference]: Finished difference Result 1743 states and 3127 transitions. [2024-12-02 13:07:05,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:07:05,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2024-12-02 13:07:05,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:05,564 INFO L225 Difference]: With dead ends: 1743 [2024-12-02 13:07:05,564 INFO L226 Difference]: Without dead ends: 1636 [2024-12-02 13:07:05,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:07:05,566 INFO L435 NwaCegarLoop]: 1504 mSDtfsCounter, 4417 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4417 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:05,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4417 Valid, 1592 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:07:05,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2024-12-02 13:07:05,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1634. [2024-12-02 13:07:05,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1632 states have (on average 1.8143382352941178) internal successors, (2961), 1633 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:05,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2961 transitions. [2024-12-02 13:07:05,601 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2961 transitions. Word has length 38 [2024-12-02 13:07:05,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:05,601 INFO L471 AbstractCegarLoop]: Abstraction has 1634 states and 2961 transitions. [2024-12-02 13:07:05,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:05,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2961 transitions. [2024-12-02 13:07:05,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 13:07:05,602 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:05,602 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] [2024-12-02 13:07:05,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 13:07:05,603 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:05,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:05,603 INFO L85 PathProgramCache]: Analyzing trace with hash -30221064, now seen corresponding path program 1 times [2024-12-02 13:07:05,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:05,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121240275] [2024-12-02 13:07:05,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:05,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:05,766 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 13:07:05,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:05,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121240275] [2024-12-02 13:07:05,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121240275] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:07:05,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:07:05,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:07:05,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648565353] [2024-12-02 13:07:05,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:07:05,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:07:05,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:05,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:07:05,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:07:05,767 INFO L87 Difference]: Start difference. First operand 1634 states and 2961 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:05,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:05,814 INFO L93 Difference]: Finished difference Result 1642 states and 2970 transitions. [2024-12-02 13:07:05,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:07:05,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2024-12-02 13:07:05,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:05,819 INFO L225 Difference]: With dead ends: 1642 [2024-12-02 13:07:05,819 INFO L226 Difference]: Without dead ends: 1640 [2024-12-02 13:07:05,820 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 13:07:05,820 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 0 mSDsluCounter, 4509 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6015 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:05,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6015 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:07:05,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2024-12-02 13:07:05,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1640. [2024-12-02 13:07:05,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1640 states, 1638 states have (on average 1.8107448107448108) internal successors, (2966), 1639 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:05,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 2966 transitions. [2024-12-02 13:07:05,856 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 2966 transitions. Word has length 39 [2024-12-02 13:07:05,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:05,857 INFO L471 AbstractCegarLoop]: Abstraction has 1640 states and 2966 transitions. [2024-12-02 13:07:05,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:05,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 2966 transitions. [2024-12-02 13:07:05,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 13:07:05,858 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:05,858 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:07:05,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 13:07:05,858 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:05,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:05,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1276756908, now seen corresponding path program 1 times [2024-12-02 13:07:05,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:05,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542790283] [2024-12-02 13:07:05,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:05,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:05,913 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 13:07:05,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:05,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542790283] [2024-12-02 13:07:05,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542790283] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:07:05,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:07:05,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:07:05,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122807406] [2024-12-02 13:07:05,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:07:05,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:07:05,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:05,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:07:05,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:07:05,915 INFO L87 Difference]: Start difference. First operand 1640 states and 2966 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:05,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:05,944 INFO L93 Difference]: Finished difference Result 1850 states and 3270 transitions. [2024-12-02 13:07:05,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:07:05,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-12-02 13:07:05,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:05,950 INFO L225 Difference]: With dead ends: 1850 [2024-12-02 13:07:05,950 INFO L226 Difference]: Without dead ends: 1737 [2024-12-02 13:07:05,950 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 13:07:05,951 INFO L435 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:05,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1588 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:07:05,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2024-12-02 13:07:05,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1735. [2024-12-02 13:07:05,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1735 states, 1733 states have (on average 1.7882285054818234) internal successors, (3099), 1734 states have internal predecessors, (3099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:05,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 3099 transitions. [2024-12-02 13:07:05,989 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 3099 transitions. Word has length 40 [2024-12-02 13:07:05,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:05,990 INFO L471 AbstractCegarLoop]: Abstraction has 1735 states and 3099 transitions. [2024-12-02 13:07:05,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:05,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 3099 transitions. [2024-12-02 13:07:05,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 13:07:05,990 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:05,991 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:07:05,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 13:07:05,991 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:05,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:05,991 INFO L85 PathProgramCache]: Analyzing trace with hash 504175956, now seen corresponding path program 1 times [2024-12-02 13:07:05,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:05,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543173301] [2024-12-02 13:07:05,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:05,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:06,042 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 13:07:06,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:06,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543173301] [2024-12-02 13:07:06,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543173301] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:07:06,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:07:06,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:07:06,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145829037] [2024-12-02 13:07:06,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:07:06,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:07:06,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:06,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:07:06,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:07:06,044 INFO L87 Difference]: Start difference. First operand 1735 states and 3099 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:06,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:06,078 INFO L93 Difference]: Finished difference Result 2119 states and 3641 transitions. [2024-12-02 13:07:06,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:07:06,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-12-02 13:07:06,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:06,086 INFO L225 Difference]: With dead ends: 2119 [2024-12-02 13:07:06,086 INFO L226 Difference]: Without dead ends: 1911 [2024-12-02 13:07:06,087 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 13:07:06,087 INFO L435 NwaCegarLoop]: 1533 mSDtfsCounter, 1472 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:06,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1590 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:07:06,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2024-12-02 13:07:06,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1909. [2024-12-02 13:07:06,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1907 states have (on average 1.747771368641846) internal successors, (3333), 1908 states have internal predecessors, (3333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:06,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 3333 transitions. [2024-12-02 13:07:06,129 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 3333 transitions. Word has length 40 [2024-12-02 13:07:06,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:06,129 INFO L471 AbstractCegarLoop]: Abstraction has 1909 states and 3333 transitions. [2024-12-02 13:07:06,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:06,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 3333 transitions. [2024-12-02 13:07:06,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 13:07:06,130 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:06,130 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:07:06,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 13:07:06,130 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:06,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:06,131 INFO L85 PathProgramCache]: Analyzing trace with hash 938711892, now seen corresponding path program 1 times [2024-12-02 13:07:06,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:06,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342576431] [2024-12-02 13:07:06,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:06,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:06,182 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 13:07:06,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:06,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342576431] [2024-12-02 13:07:06,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342576431] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:07:06,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:07:06,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:07:06,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289788286] [2024-12-02 13:07:06,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:07:06,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:07:06,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:06,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:07:06,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:07:06,183 INFO L87 Difference]: Start difference. First operand 1909 states and 3333 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:06,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:06,217 INFO L93 Difference]: Finished difference Result 2332 states and 3931 transitions. [2024-12-02 13:07:06,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:07:06,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-12-02 13:07:06,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:06,223 INFO L225 Difference]: With dead ends: 2332 [2024-12-02 13:07:06,224 INFO L226 Difference]: Without dead ends: 2106 [2024-12-02 13:07:06,224 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 13:07:06,225 INFO L435 NwaCegarLoop]: 1541 mSDtfsCounter, 1476 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:06,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1590 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:07:06,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2024-12-02 13:07:06,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2104. [2024-12-02 13:07:06,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 2102 states have (on average 1.7107516650808754) internal successors, (3596), 2103 states have internal predecessors, (3596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:06,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 3596 transitions. [2024-12-02 13:07:06,273 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 3596 transitions. Word has length 40 [2024-12-02 13:07:06,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:06,273 INFO L471 AbstractCegarLoop]: Abstraction has 2104 states and 3596 transitions. [2024-12-02 13:07:06,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:06,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 3596 transitions. [2024-12-02 13:07:06,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 13:07:06,274 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:06,274 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] [2024-12-02 13:07:06,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 13:07:06,275 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:06,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:06,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1906548838, now seen corresponding path program 1 times [2024-12-02 13:07:06,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:06,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208522209] [2024-12-02 13:07:06,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:06,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:06,412 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 13:07:06,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:06,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208522209] [2024-12-02 13:07:06,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208522209] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:07:06,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:07:06,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:07:06,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775747064] [2024-12-02 13:07:06,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:07:06,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:07:06,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:06,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:07:06,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:07:06,414 INFO L87 Difference]: Start difference. First operand 2104 states and 3596 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:06,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:06,522 INFO L93 Difference]: Finished difference Result 3960 states and 6148 transitions. [2024-12-02 13:07:06,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:07:06,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 13:07:06,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:06,531 INFO L225 Difference]: With dead ends: 3960 [2024-12-02 13:07:06,531 INFO L226 Difference]: Without dead ends: 3386 [2024-12-02 13:07:06,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:07:06,534 INFO L435 NwaCegarLoop]: 1548 mSDtfsCounter, 3044 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3044 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:06,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3044 Valid, 3149 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:07:06,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2024-12-02 13:07:06,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 2676. [2024-12-02 13:07:06,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2676 states, 2674 states have (on average 1.636499626028422) internal successors, (4376), 2675 states have internal predecessors, (4376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:06,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 4376 transitions. [2024-12-02 13:07:06,608 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 4376 transitions. Word has length 56 [2024-12-02 13:07:06,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:06,608 INFO L471 AbstractCegarLoop]: Abstraction has 2676 states and 4376 transitions. [2024-12-02 13:07:06,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:06,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 4376 transitions. [2024-12-02 13:07:06,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 13:07:06,609 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:06,609 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] [2024-12-02 13:07:06,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 13:07:06,610 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:06,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:06,610 INFO L85 PathProgramCache]: Analyzing trace with hash -125615974, now seen corresponding path program 1 times [2024-12-02 13:07:06,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:06,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918397938] [2024-12-02 13:07:06,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:06,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:06,722 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 13:07:06,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:06,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918397938] [2024-12-02 13:07:06,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918397938] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:07:06,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:07:06,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:07:06,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028113643] [2024-12-02 13:07:06,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:07:06,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:07:06,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:06,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:07:06,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:07:06,724 INFO L87 Difference]: Start difference. First operand 2676 states and 4376 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:06,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:06,843 INFO L93 Difference]: Finished difference Result 4532 states and 6928 transitions. [2024-12-02 13:07:06,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:07:06,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 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 13:07:06,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:06,857 INFO L225 Difference]: With dead ends: 4532 [2024-12-02 13:07:06,857 INFO L226 Difference]: Without dead ends: 3958 [2024-12-02 13:07:06,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:07:06,859 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 3048 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3048 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:06,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3048 Valid, 3155 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:07:06,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2024-12-02 13:07:06,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 3536. [2024-12-02 13:07:06,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 3534 states have (on average 1.5664968873797396) internal successors, (5536), 3535 states have internal predecessors, (5536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:06,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 5536 transitions. [2024-12-02 13:07:06,934 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 5536 transitions. Word has length 56 [2024-12-02 13:07:06,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:06,934 INFO L471 AbstractCegarLoop]: Abstraction has 3536 states and 5536 transitions. [2024-12-02 13:07:06,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:06,934 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 5536 transitions. [2024-12-02 13:07:06,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 13:07:06,935 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:06,935 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] [2024-12-02 13:07:06,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 13:07:06,935 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:06,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:06,935 INFO L85 PathProgramCache]: Analyzing trace with hash 308919962, now seen corresponding path program 1 times [2024-12-02 13:07:06,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:06,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214755064] [2024-12-02 13:07:06,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:06,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:07,013 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 13:07:07,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:07,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214755064] [2024-12-02 13:07:07,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214755064] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:07:07,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:07:07,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:07:07,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846116790] [2024-12-02 13:07:07,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:07:07,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:07:07,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:07,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:07:07,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:07:07,015 INFO L87 Difference]: Start difference. First operand 3536 states and 5536 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 13:07:07,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:07,106 INFO L93 Difference]: Finished difference Result 4792 states and 7292 transitions. [2024-12-02 13:07:07,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:07:07,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 56 [2024-12-02 13:07:07,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:07,119 INFO L225 Difference]: With dead ends: 4792 [2024-12-02 13:07:07,119 INFO L226 Difference]: Without dead ends: 4374 [2024-12-02 13:07:07,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:07:07,122 INFO L435 NwaCegarLoop]: 1547 mSDtfsCounter, 3043 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:07,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3163 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:07:07,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4374 states. [2024-12-02 13:07:07,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4374 to 3952. [2024-12-02 13:07:07,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3950 states have (on average 1.5473417721518987) internal successors, (6112), 3951 states have internal predecessors, (6112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:07,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 6112 transitions. [2024-12-02 13:07:07,239 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 6112 transitions. Word has length 56 [2024-12-02 13:07:07,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:07,239 INFO L471 AbstractCegarLoop]: Abstraction has 3952 states and 6112 transitions. [2024-12-02 13:07:07,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 13:07:07,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 6112 transitions. [2024-12-02 13:07:07,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 13:07:07,241 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:07,241 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:07:07,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 13:07:07,241 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:07,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:07,241 INFO L85 PathProgramCache]: Analyzing trace with hash 977738755, now seen corresponding path program 1 times [2024-12-02 13:07:07,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:07,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977545638] [2024-12-02 13:07:07,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:07,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:07,331 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 13:07:07,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:07,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977545638] [2024-12-02 13:07:07,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977545638] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:07:07,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:07:07,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:07:07,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320917621] [2024-12-02 13:07:07,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:07:07,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:07:07,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:07,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:07:07,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:07:07,333 INFO L87 Difference]: Start difference. First operand 3952 states and 6112 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:07,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:07,393 INFO L93 Difference]: Finished difference Result 6376 states and 9422 transitions. [2024-12-02 13:07:07,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:07:07,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-12-02 13:07:07,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:07,403 INFO L225 Difference]: With dead ends: 6376 [2024-12-02 13:07:07,404 INFO L226 Difference]: Without dead ends: 3954 [2024-12-02 13:07:07,407 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 13:07:07,407 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:07,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3025 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:07:07,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2024-12-02 13:07:07,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3952. [2024-12-02 13:07:07,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3950 states have (on average 1.5346835443037974) internal successors, (6062), 3951 states have internal predecessors, (6062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:07,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 6062 transitions. [2024-12-02 13:07:07,501 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 6062 transitions. Word has length 57 [2024-12-02 13:07:07,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:07,501 INFO L471 AbstractCegarLoop]: Abstraction has 3952 states and 6062 transitions. [2024-12-02 13:07:07,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:07,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 6062 transitions. [2024-12-02 13:07:07,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 13:07:07,503 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:07,503 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] [2024-12-02 13:07:07,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 13:07:07,503 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:07,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:07,504 INFO L85 PathProgramCache]: Analyzing trace with hash 408394290, now seen corresponding path program 1 times [2024-12-02 13:07:07,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:07,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124340373] [2024-12-02 13:07:07,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:07,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:07,594 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 13:07:07,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:07,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124340373] [2024-12-02 13:07:07,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124340373] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:07:07,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:07:07,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:07:07,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61064969] [2024-12-02 13:07:07,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:07:07,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:07:07,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:07,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:07:07,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:07:07,596 INFO L87 Difference]: Start difference. First operand 3952 states and 6062 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:07,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:07,636 INFO L93 Difference]: Finished difference Result 4908 states and 7359 transitions. [2024-12-02 13:07:07,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:07:07,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-12-02 13:07:07,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:07,643 INFO L225 Difference]: With dead ends: 4908 [2024-12-02 13:07:07,643 INFO L226 Difference]: Without dead ends: 2486 [2024-12-02 13:07:07,646 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 13:07:07,646 INFO L435 NwaCegarLoop]: 1526 mSDtfsCounter, 23 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:07,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3022 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:07:07,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2024-12-02 13:07:07,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2477. [2024-12-02 13:07:07,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2475 states have (on average 1.6456565656565656) internal successors, (4073), 2476 states have internal predecessors, (4073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:07,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 4073 transitions. [2024-12-02 13:07:07,699 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 4073 transitions. Word has length 58 [2024-12-02 13:07:07,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:07,700 INFO L471 AbstractCegarLoop]: Abstraction has 2477 states and 4073 transitions. [2024-12-02 13:07:07,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:07,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 4073 transitions. [2024-12-02 13:07:07,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 13:07:07,700 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:07,701 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] [2024-12-02 13:07:07,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 13:07:07,701 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:07,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:07,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1553558485, now seen corresponding path program 1 times [2024-12-02 13:07:07,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:07,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187787842] [2024-12-02 13:07:07,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:07,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:07,790 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 13:07:07,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:07,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187787842] [2024-12-02 13:07:07,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187787842] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:07:07,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:07:07,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:07:07,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359224491] [2024-12-02 13:07:07,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:07:07,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:07:07,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:07,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:07:07,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:07:07,792 INFO L87 Difference]: Start difference. First operand 2477 states and 4073 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:07,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:07,822 INFO L93 Difference]: Finished difference Result 2949 states and 4705 transitions. [2024-12-02 13:07:07,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:07:07,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-12-02 13:07:07,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:07,828 INFO L225 Difference]: With dead ends: 2949 [2024-12-02 13:07:07,828 INFO L226 Difference]: Without dead ends: 2011 [2024-12-02 13:07:07,830 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 13:07:07,830 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 25 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:07,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:07:07,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2024-12-02 13:07:07,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 2009. [2024-12-02 13:07:07,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2007 states have (on average 1.7110114598903836) internal successors, (3434), 2008 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:07,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3434 transitions. [2024-12-02 13:07:07,871 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3434 transitions. Word has length 59 [2024-12-02 13:07:07,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:07,871 INFO L471 AbstractCegarLoop]: Abstraction has 2009 states and 3434 transitions. [2024-12-02 13:07:07,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:07,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3434 transitions. [2024-12-02 13:07:07,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-12-02 13:07:07,872 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:07,872 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] [2024-12-02 13:07:07,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 13:07:07,872 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:07,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:07,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1066169817, now seen corresponding path program 1 times [2024-12-02 13:07:07,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:07,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920026839] [2024-12-02 13:07:07,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:07,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:08,022 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 13:07:08,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:08,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920026839] [2024-12-02 13:07:08,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920026839] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:07:08,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835391980] [2024-12-02 13:07:08,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:08,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:07:08,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:07:08,025 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:07:08,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 13:07:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:08,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 13:07:08,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:07:08,606 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 13:07:08,607 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:07:09,424 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 13:07:09,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835391980] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:07:09,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:07:09,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 20 [2024-12-02 13:07:09,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024522566] [2024-12-02 13:07:09,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:07:09,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 13:07:09,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:09,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 13:07:09,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-12-02 13:07:09,426 INFO L87 Difference]: Start difference. First operand 2009 states and 3434 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:10,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:10,211 INFO L93 Difference]: Finished difference Result 3490 states and 5347 transitions. [2024-12-02 13:07:10,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 13:07:10,212 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 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 61 [2024-12-02 13:07:10,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:10,216 INFO L225 Difference]: With dead ends: 3490 [2024-12-02 13:07:10,216 INFO L226 Difference]: Without dead ends: 3020 [2024-12-02 13:07:10,218 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=394, Invalid=1246, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 13:07:10,219 INFO L435 NwaCegarLoop]: 1487 mSDtfsCounter, 15564 mSDsluCounter, 3152 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15564 SdHoareTripleChecker+Valid, 4639 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:10,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15564 Valid, 4639 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:07:10,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2024-12-02 13:07:10,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 2880. [2024-12-02 13:07:10,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2880 states, 2878 states have (on average 1.5639332870048646) internal successors, (4501), 2879 states have internal predecessors, (4501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:10,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 4501 transitions. [2024-12-02 13:07:10,296 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 4501 transitions. Word has length 61 [2024-12-02 13:07:10,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:10,296 INFO L471 AbstractCegarLoop]: Abstraction has 2880 states and 4501 transitions. [2024-12-02 13:07:10,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:10,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 4501 transitions. [2024-12-02 13:07:10,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 13:07:10,297 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:10,297 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] [2024-12-02 13:07:10,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 13:07:10,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 13:07:10,498 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:10,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:10,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2045594482, now seen corresponding path program 1 times [2024-12-02 13:07:10,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:10,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212438695] [2024-12-02 13:07:10,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:10,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:10,947 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 13:07:10,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:10,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212438695] [2024-12-02 13:07:10,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212438695] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:07:10,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572913107] [2024-12-02 13:07:10,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:10,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:07:10,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:07:10,949 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:07:10,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 13:07:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:11,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 13:07:11,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:07:11,433 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 13:07:11,433 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:07:12,087 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 13:07:12,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572913107] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:07:12,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:07:12,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-12-02 13:07:12,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008093972] [2024-12-02 13:07:12,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:07:12,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 13:07:12,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:12,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 13:07:12,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2024-12-02 13:07:12,088 INFO L87 Difference]: Start difference. First operand 2880 states and 4501 transitions. Second operand has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:13,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:13,206 INFO L93 Difference]: Finished difference Result 6371 states and 8980 transitions. [2024-12-02 13:07:13,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 13:07:13,206 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 states have internal predecessors, (166), 0 states have call successors, (0), 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 62 [2024-12-02 13:07:13,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:13,214 INFO L225 Difference]: With dead ends: 6371 [2024-12-02 13:07:13,214 INFO L226 Difference]: Without dead ends: 5150 [2024-12-02 13:07:13,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=429, Invalid=1641, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 13:07:13,216 INFO L435 NwaCegarLoop]: 1487 mSDtfsCounter, 18135 mSDsluCounter, 4853 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18135 SdHoareTripleChecker+Valid, 6340 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:13,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18135 Valid, 6340 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:07:13,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5150 states. [2024-12-02 13:07:13,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5150 to 5124. [2024-12-02 13:07:13,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5124 states, 5122 states have (on average 1.4283483014447482) internal successors, (7316), 5123 states have internal predecessors, (7316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:13,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5124 states to 5124 states and 7316 transitions. [2024-12-02 13:07:13,304 INFO L78 Accepts]: Start accepts. Automaton has 5124 states and 7316 transitions. Word has length 62 [2024-12-02 13:07:13,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:13,304 INFO L471 AbstractCegarLoop]: Abstraction has 5124 states and 7316 transitions. [2024-12-02 13:07:13,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:13,304 INFO L276 IsEmpty]: Start isEmpty. Operand 5124 states and 7316 transitions. [2024-12-02 13:07:13,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 13:07:13,305 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:13,305 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:07:13,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 13:07:13,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 13:07:13,506 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:13,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:13,506 INFO L85 PathProgramCache]: Analyzing trace with hash -679621431, now seen corresponding path program 1 times [2024-12-02 13:07:13,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:13,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931896031] [2024-12-02 13:07:13,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:13,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:14,379 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:07:14,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:14,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931896031] [2024-12-02 13:07:14,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931896031] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:07:14,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576350843] [2024-12-02 13:07:14,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:14,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:07:14,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:07:14,382 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:07:14,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 13:07:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:14,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 13:07:14,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:07:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:07:15,136 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:07:16,055 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:07:16,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576350843] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:07:16,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:07:16,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 30 [2024-12-02 13:07:16,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173071914] [2024-12-02 13:07:16,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:07:16,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 13:07:16,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:16,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 13:07:16,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2024-12-02 13:07:16,057 INFO L87 Difference]: Start difference. First operand 5124 states and 7316 transitions. Second operand has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:17,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:17,540 INFO L93 Difference]: Finished difference Result 11908 states and 16167 transitions. [2024-12-02 13:07:17,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 13:07:17,541 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-12-02 13:07:17,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:17,554 INFO L225 Difference]: With dead ends: 11908 [2024-12-02 13:07:17,554 INFO L226 Difference]: Without dead ends: 10404 [2024-12-02 13:07:17,558 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=548, Invalid=2104, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 13:07:17,559 INFO L435 NwaCegarLoop]: 1499 mSDtfsCounter, 11683 mSDsluCounter, 13608 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11683 SdHoareTripleChecker+Valid, 15107 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:17,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11683 Valid, 15107 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 13:07:17,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10404 states. [2024-12-02 13:07:17,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10404 to 4691. [2024-12-02 13:07:17,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4691 states, 4689 states have (on average 1.4440179142674343) internal successors, (6771), 4690 states have internal predecessors, (6771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:17,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4691 states to 4691 states and 6771 transitions. [2024-12-02 13:07:17,727 INFO L78 Accepts]: Start accepts. Automaton has 4691 states and 6771 transitions. Word has length 63 [2024-12-02 13:07:17,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:17,727 INFO L471 AbstractCegarLoop]: Abstraction has 4691 states and 6771 transitions. [2024-12-02 13:07:17,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:17,727 INFO L276 IsEmpty]: Start isEmpty. Operand 4691 states and 6771 transitions. [2024-12-02 13:07:17,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 13:07:17,728 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:17,728 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:07:17,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 13:07:17,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:07:17,929 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:17,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:17,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1861102501, now seen corresponding path program 1 times [2024-12-02 13:07:17,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:17,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343986251] [2024-12-02 13:07:17,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:17,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:18,687 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:07:18,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:18,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343986251] [2024-12-02 13:07:18,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343986251] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:07:18,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248004525] [2024-12-02 13:07:18,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:18,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:07:18,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:07:18,690 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:07:18,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 13:07:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:18,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-12-02 13:07:18,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:07:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:07:20,814 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:07:23,877 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:07:23,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248004525] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:07:23,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:07:23,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19, 18] total 46 [2024-12-02 13:07:23,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309031004] [2024-12-02 13:07:23,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:07:23,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-12-02 13:07:23,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:23,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-12-02 13:07:23,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1791, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 13:07:23,879 INFO L87 Difference]: Start difference. First operand 4691 states and 6771 transitions. Second operand has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:36,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:36,918 INFO L93 Difference]: Finished difference Result 9442 states and 12754 transitions. [2024-12-02 13:07:36,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-12-02 13:07:36,919 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-12-02 13:07:36,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:36,956 INFO L225 Difference]: With dead ends: 9442 [2024-12-02 13:07:36,957 INFO L226 Difference]: Without dead ends: 7086 [2024-12-02 13:07:36,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4079 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=2799, Invalid=11007, Unknown=0, NotChecked=0, Total=13806 [2024-12-02 13:07:36,964 INFO L435 NwaCegarLoop]: 1533 mSDtfsCounter, 17935 mSDsluCounter, 14790 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17935 SdHoareTripleChecker+Valid, 16323 SdHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:36,965 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17935 Valid, 16323 Invalid, 2095 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [83 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 13:07:36,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7086 states. [2024-12-02 13:07:37,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7086 to 5864. [2024-12-02 13:07:37,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5864 states, 5862 states have (on average 1.4097577618560218) internal successors, (8264), 5863 states have internal predecessors, (8264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:37,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5864 states to 5864 states and 8264 transitions. [2024-12-02 13:07:37,303 INFO L78 Accepts]: Start accepts. Automaton has 5864 states and 8264 transitions. Word has length 63 [2024-12-02 13:07:37,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:37,303 INFO L471 AbstractCegarLoop]: Abstraction has 5864 states and 8264 transitions. [2024-12-02 13:07:37,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:37,304 INFO L276 IsEmpty]: Start isEmpty. Operand 5864 states and 8264 transitions. [2024-12-02 13:07:37,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-02 13:07:37,310 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:37,310 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:37,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 13:07:37,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:07:37,513 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:37,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:37,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1874586857, now seen corresponding path program 1 times [2024-12-02 13:07:37,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:37,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374656245] [2024-12-02 13:07:37,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:37,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:37,951 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:07:37,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:37,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374656245] [2024-12-02 13:07:37,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374656245] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:07:37,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:07:37,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:07:37,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748700349] [2024-12-02 13:07:37,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:07:37,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:07:37,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:37,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:07:37,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:07:37,953 INFO L87 Difference]: Start difference. First operand 5864 states and 8264 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:44,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:44,027 INFO L93 Difference]: Finished difference Result 9621 states and 15154 transitions. [2024-12-02 13:07:44,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:07:44,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-12-02 13:07:44,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:44,041 INFO L225 Difference]: With dead ends: 9621 [2024-12-02 13:07:44,042 INFO L226 Difference]: Without dead ends: 8117 [2024-12-02 13:07:44,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:07:44,044 INFO L435 NwaCegarLoop]: 763 mSDtfsCounter, 2315 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2315 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 6302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1148 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:44,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2315 Valid, 781 Invalid, 6302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1148 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-12-02 13:07:44,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8117 states. [2024-12-02 13:07:44,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8117 to 8117. [2024-12-02 13:07:44,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8117 states, 8115 states have (on average 1.403943314849045) internal successors, (11393), 8116 states have internal predecessors, (11393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:44,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8117 states to 8117 states and 11393 transitions. [2024-12-02 13:07:44,340 INFO L78 Accepts]: Start accepts. Automaton has 8117 states and 11393 transitions. Word has length 99 [2024-12-02 13:07:44,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:44,341 INFO L471 AbstractCegarLoop]: Abstraction has 8117 states and 11393 transitions. [2024-12-02 13:07:44,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:44,341 INFO L276 IsEmpty]: Start isEmpty. Operand 8117 states and 11393 transitions. [2024-12-02 13:07:44,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-12-02 13:07:44,348 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:44,349 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:44,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 13:07:44,349 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:44,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:44,350 INFO L85 PathProgramCache]: Analyzing trace with hash 472036910, now seen corresponding path program 1 times [2024-12-02 13:07:44,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:44,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489994510] [2024-12-02 13:07:44,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:44,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:44,499 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-02 13:07:44,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:44,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489994510] [2024-12-02 13:07:44,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489994510] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:07:44,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:07:44,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:07:44,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015694680] [2024-12-02 13:07:44,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:07:44,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:07:44,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:44,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:07:44,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:07:44,501 INFO L87 Difference]: Start difference. First operand 8117 states and 11393 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:47,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:47,740 INFO L93 Difference]: Finished difference Result 14878 states and 22445 transitions. [2024-12-02 13:07:47,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:07:47,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 101 [2024-12-02 13:07:47,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:47,752 INFO L225 Difference]: With dead ends: 14878 [2024-12-02 13:07:47,752 INFO L226 Difference]: Without dead ends: 11121 [2024-12-02 13:07:47,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:07:47,758 INFO L435 NwaCegarLoop]: 537 mSDtfsCounter, 795 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:47,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 544 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 13:07:47,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11121 states. [2024-12-02 13:07:48,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11121 to 11121. [2024-12-02 13:07:48,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11121 states, 11119 states have (on average 1.35956470905657) internal successors, (15117), 11120 states have internal predecessors, (15117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11121 states to 11121 states and 15117 transitions. [2024-12-02 13:07:48,029 INFO L78 Accepts]: Start accepts. Automaton has 11121 states and 15117 transitions. Word has length 101 [2024-12-02 13:07:48,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:48,029 INFO L471 AbstractCegarLoop]: Abstraction has 11121 states and 15117 transitions. [2024-12-02 13:07:48,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:48,029 INFO L276 IsEmpty]: Start isEmpty. Operand 11121 states and 15117 transitions. [2024-12-02 13:07:48,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 13:07:48,032 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:48,032 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2024-12-02 13:07:48,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 13:07:48,032 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:48,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:48,033 INFO L85 PathProgramCache]: Analyzing trace with hash 268330733, now seen corresponding path program 1 times [2024-12-02 13:07:48,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:48,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990778582] [2024-12-02 13:07:48,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:48,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 30 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:07:48,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:48,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990778582] [2024-12-02 13:07:48,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990778582] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:07:48,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126491189] [2024-12-02 13:07:48,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:48,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:07:48,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:07:48,943 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:07:48,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 13:07:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:49,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 13:07:49,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:07:49,268 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 12 proven. 66 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 13:07:49,268 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:07:49,683 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 12 proven. 66 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 13:07:49,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126491189] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:07:49,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:07:49,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 5] total 23 [2024-12-02 13:07:49,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725579759] [2024-12-02 13:07:49,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:07:49,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 13:07:49,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:49,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 13:07:49,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-12-02 13:07:49,685 INFO L87 Difference]: Start difference. First operand 11121 states and 15117 transitions. Second operand has 23 states, 23 states have (on average 11.478260869565217) internal successors, (264), 23 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:53,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:53,607 INFO L93 Difference]: Finished difference Result 21463 states and 27831 transitions. [2024-12-02 13:07:53,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-12-02 13:07:53,607 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 11.478260869565217) internal successors, (264), 23 states have internal predecessors, (264), 0 states have call successors, (0), 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 103 [2024-12-02 13:07:53,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:53,625 INFO L225 Difference]: With dead ends: 21463 [2024-12-02 13:07:53,625 INFO L226 Difference]: Without dead ends: 17360 [2024-12-02 13:07:53,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3467 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1454, Invalid=9052, Unknown=0, NotChecked=0, Total=10506 [2024-12-02 13:07:53,631 INFO L435 NwaCegarLoop]: 1574 mSDtfsCounter, 14027 mSDsluCounter, 11688 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14027 SdHoareTripleChecker+Valid, 13262 SdHoareTripleChecker+Invalid, 2173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:53,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14027 Valid, 13262 Invalid, 2173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2134 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 13:07:53,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17360 states. [2024-12-02 13:07:53,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17360 to 14707. [2024-12-02 13:07:53,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14707 states, 14705 states have (on average 1.3103026181570894) internal successors, (19268), 14706 states have internal predecessors, (19268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:54,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14707 states to 14707 states and 19268 transitions. [2024-12-02 13:07:54,010 INFO L78 Accepts]: Start accepts. Automaton has 14707 states and 19268 transitions. Word has length 103 [2024-12-02 13:07:54,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:54,010 INFO L471 AbstractCegarLoop]: Abstraction has 14707 states and 19268 transitions. [2024-12-02 13:07:54,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.478260869565217) internal successors, (264), 23 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:07:54,010 INFO L276 IsEmpty]: Start isEmpty. Operand 14707 states and 19268 transitions. [2024-12-02 13:07:54,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 13:07:54,012 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:54,012 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:07:54,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 13:07:54,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 13:07:54,213 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:54,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:54,213 INFO L85 PathProgramCache]: Analyzing trace with hash 159932591, now seen corresponding path program 1 times [2024-12-02 13:07:54,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:54,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775071256] [2024-12-02 13:07:54,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:54,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:55,209 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 33 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:07:55,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:55,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775071256] [2024-12-02 13:07:55,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775071256] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:07:55,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76512586] [2024-12-02 13:07:55,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:55,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:07:55,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:07:55,211 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:07:55,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 13:07:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:55,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 13:07:55,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:07:56,036 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 19 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:07:56,036 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:07:57,703 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 16 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:07:57,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76512586] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:07:57,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:07:57,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 38 [2024-12-02 13:07:57,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313077388] [2024-12-02 13:07:57,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:07:57,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-12-02 13:07:57,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:57,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-12-02 13:07:57,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 13:07:57,706 INFO L87 Difference]: Start difference. First operand 14707 states and 19268 transitions. Second operand has 39 states, 39 states have (on average 7.512820512820513) internal successors, (293), 38 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:08:05,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:08:05,758 INFO L93 Difference]: Finished difference Result 30186 states and 38102 transitions. [2024-12-02 13:08:05,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-12-02 13:08:05,758 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 7.512820512820513) internal successors, (293), 38 states have internal predecessors, (293), 0 states have call successors, (0), 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 103 [2024-12-02 13:08:05,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:08:05,776 INFO L225 Difference]: With dead ends: 30186 [2024-12-02 13:08:05,776 INFO L226 Difference]: Without dead ends: 25313 [2024-12-02 13:08:05,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6235 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=3517, Invalid=16789, Unknown=0, NotChecked=0, Total=20306 [2024-12-02 13:08:05,785 INFO L435 NwaCegarLoop]: 1605 mSDtfsCounter, 24513 mSDsluCounter, 23918 mSDsCounter, 0 mSdLazyCounter, 2189 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24513 SdHoareTripleChecker+Valid, 25523 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:08:05,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24513 Valid, 25523 Invalid, 2332 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [143 Valid, 2189 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 13:08:05,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25313 states. [2024-12-02 13:08:06,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25313 to 18297. [2024-12-02 13:08:06,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18297 states, 18295 states have (on average 1.2861437551243509) internal successors, (23530), 18296 states have internal predecessors, (23530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:08:06,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18297 states to 18297 states and 23530 transitions. [2024-12-02 13:08:06,368 INFO L78 Accepts]: Start accepts. Automaton has 18297 states and 23530 transitions. Word has length 103 [2024-12-02 13:08:06,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:08:06,368 INFO L471 AbstractCegarLoop]: Abstraction has 18297 states and 23530 transitions. [2024-12-02 13:08:06,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.512820512820513) internal successors, (293), 38 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:08:06,369 INFO L276 IsEmpty]: Start isEmpty. Operand 18297 states and 23530 transitions. [2024-12-02 13:08:06,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 13:08:06,370 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:06,370 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:08:06,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 13:08:06,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 13:08:06,571 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:06,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:06,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1648355578, now seen corresponding path program 1 times [2024-12-02 13:08:06,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:08:06,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218559768] [2024-12-02 13:08:06,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:06,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:08:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:07,714 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 59 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 13:08:07,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:08:07,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218559768] [2024-12-02 13:08:07,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218559768] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:08:07,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93890379] [2024-12-02 13:08:07,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:07,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:08:07,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:08:07,716 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:08:07,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 13:08:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:07,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 13:08:07,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:08:10,155 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:08:10,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:08:14,125 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:08:14,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93890379] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:08:14,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:08:14,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23, 22] total 60 [2024-12-02 13:08:14,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214776311] [2024-12-02 13:08:14,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:08:14,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-12-02 13:08:14,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:08:14,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-12-02 13:08:14,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=3185, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 13:08:14,128 INFO L87 Difference]: Start difference. First operand 18297 states and 23530 transitions. Second operand has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 60 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:08:50,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:08:50,037 INFO L93 Difference]: Finished difference Result 27564 states and 34700 transitions. [2024-12-02 13:08:50,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2024-12-02 13:08:50,038 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 60 states have internal predecessors, (281), 0 states have call successors, (0), 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 104 [2024-12-02 13:08:50,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:08:50,055 INFO L225 Difference]: With dead ends: 27564 [2024-12-02 13:08:50,055 INFO L226 Difference]: Without dead ends: 23456 [2024-12-02 13:08:50,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14376 ImplicationChecksByTransitivity, 34.1s TimeCoverageRelationStatistics Valid=6621, Invalid=39819, Unknown=0, NotChecked=0, Total=46440 [2024-12-02 13:08:50,063 INFO L435 NwaCegarLoop]: 1643 mSDtfsCounter, 22791 mSDsluCounter, 30579 mSDsCounter, 0 mSdLazyCounter, 3317 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22791 SdHoareTripleChecker+Valid, 32222 SdHoareTripleChecker+Invalid, 3455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 3317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-02 13:08:50,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22791 Valid, 32222 Invalid, 3455 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 3317 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-02 13:08:50,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23456 states. [2024-12-02 13:08:51,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23456 to 22543. [2024-12-02 13:08:51,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22543 states, 22541 states have (on average 1.2691539860698282) internal successors, (28608), 22542 states have internal predecessors, (28608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:08:51,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22543 states to 22543 states and 28608 transitions. [2024-12-02 13:08:51,030 INFO L78 Accepts]: Start accepts. Automaton has 22543 states and 28608 transitions. Word has length 104 [2024-12-02 13:08:51,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:08:51,030 INFO L471 AbstractCegarLoop]: Abstraction has 22543 states and 28608 transitions. [2024-12-02 13:08:51,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 60 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:08:51,030 INFO L276 IsEmpty]: Start isEmpty. Operand 22543 states and 28608 transitions. [2024-12-02 13:08:51,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 13:08:51,031 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:51,031 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:08:51,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 13:08:51,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 13:08:51,232 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:51,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:51,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1812137019, now seen corresponding path program 1 times [2024-12-02 13:08:51,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:08:51,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065251976] [2024-12-02 13:08:51,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:51,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:08:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 25 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:08:52,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:08:52,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065251976] [2024-12-02 13:08:52,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065251976] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:08:52,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447940764] [2024-12-02 13:08:52,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:52,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:08:52,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:08:52,954 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:08:52,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 13:08:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:53,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 13:08:53,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:08:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 21 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:08:54,346 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:08:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 17 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:08:56,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447940764] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:08:56,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:08:56,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 16, 14] total 52 [2024-12-02 13:08:56,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804487806] [2024-12-02 13:08:56,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:08:56,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-12-02 13:08:56,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:08:56,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-12-02 13:08:56,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2470, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 13:08:56,018 INFO L87 Difference]: Start difference. First operand 22543 states and 28608 transitions. Second operand has 52 states, 52 states have (on average 5.711538461538462) internal successors, (297), 52 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:09:19,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:09:19,665 INFO L93 Difference]: Finished difference Result 41031 states and 50816 transitions. [2024-12-02 13:09:19,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2024-12-02 13:09:19,665 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.711538461538462) internal successors, (297), 52 states have internal predecessors, (297), 0 states have call successors, (0), 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 105 [2024-12-02 13:09:19,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:09:19,687 INFO L225 Difference]: With dead ends: 41031 [2024-12-02 13:09:19,687 INFO L226 Difference]: Without dead ends: 30529 [2024-12-02 13:09:19,696 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14627 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=6723, Invalid=38859, Unknown=0, NotChecked=0, Total=45582 [2024-12-02 13:09:19,696 INFO L435 NwaCegarLoop]: 1685 mSDtfsCounter, 23574 mSDsluCounter, 34656 mSDsCounter, 0 mSdLazyCounter, 4279 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23574 SdHoareTripleChecker+Valid, 36341 SdHoareTripleChecker+Invalid, 4469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 4279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:09:19,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23574 Valid, 36341 Invalid, 4469 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [190 Valid, 4279 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 13:09:19,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30529 states. [2024-12-02 13:09:20,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30529 to 25643. [2024-12-02 13:09:20,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25643 states, 25641 states have (on average 1.2597792597792599) internal successors, (32302), 25642 states have internal predecessors, (32302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:09:20,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25643 states to 25643 states and 32302 transitions. [2024-12-02 13:09:20,984 INFO L78 Accepts]: Start accepts. Automaton has 25643 states and 32302 transitions. Word has length 105 [2024-12-02 13:09:20,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:09:20,984 INFO L471 AbstractCegarLoop]: Abstraction has 25643 states and 32302 transitions. [2024-12-02 13:09:20,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.711538461538462) internal successors, (297), 52 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:09:20,985 INFO L276 IsEmpty]: Start isEmpty. Operand 25643 states and 32302 transitions. [2024-12-02 13:09:20,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 13:09:20,986 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:09:20,986 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:09:20,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 13:09:21,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 13:09:21,187 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:09:21,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:09:21,187 INFO L85 PathProgramCache]: Analyzing trace with hash -867694025, now seen corresponding path program 1 times [2024-12-02 13:09:21,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:09:21,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271241088] [2024-12-02 13:09:21,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:09:21,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:09:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:09:22,068 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:09:22,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:09:22,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271241088] [2024-12-02 13:09:22,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271241088] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:09:22,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816613029] [2024-12-02 13:09:22,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:09:22,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:09:22,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:09:22,070 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:09:22,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 13:09:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:09:22,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 13:09:22,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:09:24,974 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:09:24,975 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:09:27,746 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:09:27,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816613029] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:09:27,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:09:27,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 52 [2024-12-02 13:09:27,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580910544] [2024-12-02 13:09:27,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:09:27,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-12-02 13:09:27,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:09:27,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-12-02 13:09:27,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=2369, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 13:09:27,747 INFO L87 Difference]: Start difference. First operand 25643 states and 32302 transitions. Second operand has 52 states, 52 states have (on average 5.730769230769231) internal successors, (298), 52 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:09:37,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:09:37,281 INFO L93 Difference]: Finished difference Result 38591 states and 47975 transitions. [2024-12-02 13:09:37,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-12-02 13:09:37,282 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.730769230769231) internal successors, (298), 52 states have internal predecessors, (298), 0 states have call successors, (0), 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 105 [2024-12-02 13:09:37,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:09:37,301 INFO L225 Difference]: With dead ends: 38591 [2024-12-02 13:09:37,301 INFO L226 Difference]: Without dead ends: 27194 [2024-12-02 13:09:37,308 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2442 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1719, Invalid=7787, Unknown=0, NotChecked=0, Total=9506 [2024-12-02 13:09:37,309 INFO L435 NwaCegarLoop]: 1583 mSDtfsCounter, 11248 mSDsluCounter, 37352 mSDsCounter, 0 mSdLazyCounter, 2322 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11248 SdHoareTripleChecker+Valid, 38935 SdHoareTripleChecker+Invalid, 2397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-12-02 13:09:37,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11248 Valid, 38935 Invalid, 2397 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [75 Valid, 2322 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-12-02 13:09:37,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27194 states. [2024-12-02 13:09:38,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27194 to 24497. [2024-12-02 13:09:38,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24497 states, 24495 states have (on average 1.2574402939375382) internal successors, (30801), 24496 states have internal predecessors, (30801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:09:38,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24497 states to 24497 states and 30801 transitions. [2024-12-02 13:09:38,857 INFO L78 Accepts]: Start accepts. Automaton has 24497 states and 30801 transitions. Word has length 105 [2024-12-02 13:09:38,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:09:38,857 INFO L471 AbstractCegarLoop]: Abstraction has 24497 states and 30801 transitions. [2024-12-02 13:09:38,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.730769230769231) internal successors, (298), 52 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:09:38,857 INFO L276 IsEmpty]: Start isEmpty. Operand 24497 states and 30801 transitions. [2024-12-02 13:09:38,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 13:09:38,859 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:09:38,859 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 13:09:38,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 13:09:39,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 13:09:39,060 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:09:39,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:09:39,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1706401868, now seen corresponding path program 1 times [2024-12-02 13:09:39,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:09:39,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626700596] [2024-12-02 13:09:39,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:09:39,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:09:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:09:40,491 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:09:40,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:09:40,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626700596] [2024-12-02 13:09:40,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626700596] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:09:40,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178945006] [2024-12-02 13:09:40,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:09:40,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:09:40,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:09:40,493 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:09:40,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 13:09:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:09:40,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-12-02 13:09:40,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:09:42,834 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:09:42,834 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:09:46,845 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:09:46,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178945006] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:09:46,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:09:46,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21, 19] total 61 [2024-12-02 13:09:46,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279900888] [2024-12-02 13:09:46,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:09:46,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-12-02 13:09:46,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:09:46,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-12-02 13:09:46,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=3378, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 13:09:46,847 INFO L87 Difference]: Start difference. First operand 24497 states and 30801 transitions. Second operand has 61 states, 61 states have (on average 4.540983606557377) internal successors, (277), 61 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:10:07,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:10:07,822 INFO L93 Difference]: Finished difference Result 45766 states and 56323 transitions. [2024-12-02 13:10:07,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2024-12-02 13:10:07,823 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.540983606557377) internal successors, (277), 61 states have internal predecessors, (277), 0 states have call successors, (0), 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 106 [2024-12-02 13:10:07,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:10:07,851 INFO L225 Difference]: With dead ends: 45766 [2024-12-02 13:10:07,851 INFO L226 Difference]: Without dead ends: 41311 [2024-12-02 13:10:07,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 176 SyntacticMatches, 2 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10235 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=5074, Invalid=28598, Unknown=0, NotChecked=0, Total=33672 [2024-12-02 13:10:07,859 INFO L435 NwaCegarLoop]: 1626 mSDtfsCounter, 30459 mSDsluCounter, 41260 mSDsCounter, 0 mSdLazyCounter, 3963 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30459 SdHoareTripleChecker+Valid, 42886 SdHoareTripleChecker+Invalid, 4085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 3963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:10:07,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30459 Valid, 42886 Invalid, 4085 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [122 Valid, 3963 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 13:10:07,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41311 states. [2024-12-02 13:10:09,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41311 to 26867. [2024-12-02 13:10:09,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26867 states, 26865 states have (on average 1.2507723804206217) internal successors, (33602), 26866 states have internal predecessors, (33602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:10:09,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26867 states to 26867 states and 33602 transitions. [2024-12-02 13:10:09,910 INFO L78 Accepts]: Start accepts. Automaton has 26867 states and 33602 transitions. Word has length 106 [2024-12-02 13:10:09,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:10:09,910 INFO L471 AbstractCegarLoop]: Abstraction has 26867 states and 33602 transitions. [2024-12-02 13:10:09,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.540983606557377) internal successors, (277), 61 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:10:09,910 INFO L276 IsEmpty]: Start isEmpty. Operand 26867 states and 33602 transitions. [2024-12-02 13:10:09,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 13:10:09,912 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:10:09,912 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 13:10:09,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 13:10:10,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 13:10:10,113 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:10:10,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:10:10,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1230557169, now seen corresponding path program 1 times [2024-12-02 13:10:10,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:10:10,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428401260] [2024-12-02 13:10:10,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:10:10,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:10:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:10:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:10:11,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:10:11,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428401260] [2024-12-02 13:10:11,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428401260] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:10:11,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485762997] [2024-12-02 13:10:11,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:10:11,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:10:11,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:10:11,146 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:10:11,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 13:10:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:10:11,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-12-02 13:10:11,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:10:13,571 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:10:13,572 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:10:19,461 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:10:19,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485762997] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:10:19,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:10:19,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25, 23] total 64 [2024-12-02 13:10:19,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226814081] [2024-12-02 13:10:19,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:10:19,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-12-02 13:10:19,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:10:19,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-12-02 13:10:19,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=3613, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 13:10:19,463 INFO L87 Difference]: Start difference. First operand 26867 states and 33602 transitions. Second operand has 64 states, 64 states have (on average 4.53125) internal successors, (290), 64 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:10:45,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:10:45,130 INFO L93 Difference]: Finished difference Result 51355 states and 63507 transitions. [2024-12-02 13:10:45,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-12-02 13:10:45,131 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.53125) internal successors, (290), 64 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-12-02 13:10:45,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:10:45,164 INFO L225 Difference]: With dead ends: 51355 [2024-12-02 13:10:45,164 INFO L226 Difference]: Without dead ends: 42815 [2024-12-02 13:10:45,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8854 ImplicationChecksByTransitivity, 22.9s TimeCoverageRelationStatistics Valid=4930, Invalid=24140, Unknown=0, NotChecked=0, Total=29070 [2024-12-02 13:10:45,174 INFO L435 NwaCegarLoop]: 1580 mSDtfsCounter, 29129 mSDsluCounter, 25855 mSDsCounter, 0 mSdLazyCounter, 2501 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29129 SdHoareTripleChecker+Valid, 27435 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:10:45,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29129 Valid, 27435 Invalid, 2674 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [173 Valid, 2501 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-02 13:10:45,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42815 states. [2024-12-02 13:10:47,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42815 to 34587. [2024-12-02 13:10:47,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34587 states, 34585 states have (on average 1.2442677461327165) internal successors, (43033), 34586 states have internal predecessors, (43033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:10:47,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34587 states to 34587 states and 43033 transitions. [2024-12-02 13:10:47,653 INFO L78 Accepts]: Start accepts. Automaton has 34587 states and 43033 transitions. Word has length 107 [2024-12-02 13:10:47,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:10:47,653 INFO L471 AbstractCegarLoop]: Abstraction has 34587 states and 43033 transitions. [2024-12-02 13:10:47,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.53125) internal successors, (290), 64 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:10:47,653 INFO L276 IsEmpty]: Start isEmpty. Operand 34587 states and 43033 transitions. [2024-12-02 13:10:47,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 13:10:47,654 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:10:47,654 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 13:10:47,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 13:10:47,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 13:10:47,855 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:10:47,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:10:47,855 INFO L85 PathProgramCache]: Analyzing trace with hash -667025751, now seen corresponding path program 1 times [2024-12-02 13:10:47,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:10:47,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091454983] [2024-12-02 13:10:47,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:10:47,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:10:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:10:48,900 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 22 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:10:48,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:10:48,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091454983] [2024-12-02 13:10:48,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091454983] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:10:48,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058779010] [2024-12-02 13:10:48,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:10:48,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:10:48,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:10:48,902 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:10:48,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 13:10:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:10:49,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 13:10:49,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:10:51,002 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:10:51,002 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:10:52,995 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 23 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:10:52,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058779010] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:10:52,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:10:52,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 17, 16] total 51 [2024-12-02 13:10:52,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793822390] [2024-12-02 13:10:52,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:10:52,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-12-02 13:10:52,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:10:52,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-12-02 13:10:52,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2319, Unknown=0, NotChecked=0, Total=2550 [2024-12-02 13:10:52,996 INFO L87 Difference]: Start difference. First operand 34587 states and 43033 transitions. Second operand has 51 states, 51 states have (on average 5.823529411764706) internal successors, (297), 51 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:11:06,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:11:06,446 INFO L93 Difference]: Finished difference Result 100138 states and 122796 transitions. [2024-12-02 13:11:06,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-12-02 13:11:06,447 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.823529411764706) internal successors, (297), 51 states have internal predecessors, (297), 0 states have call successors, (0), 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 107 [2024-12-02 13:11:06,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:11:06,512 INFO L225 Difference]: With dead ends: 100138 [2024-12-02 13:11:06,512 INFO L226 Difference]: Without dead ends: 75727 [2024-12-02 13:11:06,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4636 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=3615, Invalid=13415, Unknown=0, NotChecked=0, Total=17030 [2024-12-02 13:11:06,532 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 27802 mSDsluCounter, 24789 mSDsCounter, 0 mSdLazyCounter, 3042 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27802 SdHoareTripleChecker+Valid, 26340 SdHoareTripleChecker+Invalid, 3154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 3042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:11:06,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27802 Valid, 26340 Invalid, 3154 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [112 Valid, 3042 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 13:11:06,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75727 states. [2024-12-02 13:11:10,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75727 to 45499. [2024-12-02 13:11:10,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45499 states, 45497 states have (on average 1.2357298283403302) internal successors, (56222), 45498 states have internal predecessors, (56222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:11:10,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45499 states to 45499 states and 56222 transitions. [2024-12-02 13:11:10,075 INFO L78 Accepts]: Start accepts. Automaton has 45499 states and 56222 transitions. Word has length 107 [2024-12-02 13:11:10,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:11:10,075 INFO L471 AbstractCegarLoop]: Abstraction has 45499 states and 56222 transitions. [2024-12-02 13:11:10,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.823529411764706) internal successors, (297), 51 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:11:10,076 INFO L276 IsEmpty]: Start isEmpty. Operand 45499 states and 56222 transitions. [2024-12-02 13:11:10,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 13:11:10,077 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:11:10,077 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 13:11:10,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 13:11:10,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:11:10,278 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:11:10,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:11:10,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1782264045, now seen corresponding path program 1 times [2024-12-02 13:11:10,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:11:10,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946148385] [2024-12-02 13:11:10,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:11:10,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:11:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:11:10,682 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:11:10,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:11:10,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946148385] [2024-12-02 13:11:10,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946148385] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:11:10,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963781535] [2024-12-02 13:11:10,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:11:10,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:11:10,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:11:10,684 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:11:10,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 13:11:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:11:10,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 13:11:10,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:11:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 52 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:11:11,673 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:11:13,247 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 42 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:11:13,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963781535] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:11:13,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:11:13,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 12] total 35 [2024-12-02 13:11:13,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184596428] [2024-12-02 13:11:13,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:11:13,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 13:11:13,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:11:13,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 13:11:13,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 13:11:13,249 INFO L87 Difference]: Start difference. First operand 45499 states and 56222 transitions. Second operand has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:11:20,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:11:20,890 INFO L93 Difference]: Finished difference Result 106723 states and 129862 transitions. [2024-12-02 13:11:20,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 13:11:20,891 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 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 107 [2024-12-02 13:11:20,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:11:20,965 INFO L225 Difference]: With dead ends: 106723 [2024-12-02 13:11:20,965 INFO L226 Difference]: Without dead ends: 74252 [2024-12-02 13:11:20,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=868, Invalid=3164, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 13:11:20,986 INFO L435 NwaCegarLoop]: 1572 mSDtfsCounter, 22622 mSDsluCounter, 14428 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22622 SdHoareTripleChecker+Valid, 16000 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 13:11:20,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22622 Valid, 16000 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 13:11:21,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74252 states. [2024-12-02 13:11:24,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74252 to 44569. [2024-12-02 13:11:24,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44569 states, 44567 states have (on average 1.2292503421814347) internal successors, (54784), 44568 states have internal predecessors, (54784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:11:24,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44569 states to 44569 states and 54784 transitions. [2024-12-02 13:11:24,639 INFO L78 Accepts]: Start accepts. Automaton has 44569 states and 54784 transitions. Word has length 107 [2024-12-02 13:11:24,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:11:24,639 INFO L471 AbstractCegarLoop]: Abstraction has 44569 states and 54784 transitions. [2024-12-02 13:11:24,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:11:24,639 INFO L276 IsEmpty]: Start isEmpty. Operand 44569 states and 54784 transitions. [2024-12-02 13:11:24,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 13:11:24,640 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:11:24,640 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 13:11:24,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 13:11:24,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:11:24,841 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:11:24,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:11:24,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1616506483, now seen corresponding path program 1 times [2024-12-02 13:11:24,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:11:24,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741022942] [2024-12-02 13:11:24,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:11:24,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:11:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:11:25,295 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 31 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:11:25,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:11:25,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741022942] [2024-12-02 13:11:25,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741022942] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:11:25,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827085055] [2024-12-02 13:11:25,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:11:25,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:11:25,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:11:25,297 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:11:25,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 13:11:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:11:25,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 13:11:25,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:11:26,318 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 34 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:11:26,318 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:11:27,778 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 34 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:11:27,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827085055] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:11:27,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:11:27,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 12] total 35 [2024-12-02 13:11:27,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403126161] [2024-12-02 13:11:27,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:11:27,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 13:11:27,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:11:27,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 13:11:27,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1059, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 13:11:27,780 INFO L87 Difference]: Start difference. First operand 44569 states and 54784 transitions. Second operand has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:11:35,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:11:35,781 INFO L93 Difference]: Finished difference Result 95029 states and 115225 transitions. [2024-12-02 13:11:35,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-12-02 13:11:35,781 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 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 107 [2024-12-02 13:11:35,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:11:35,857 INFO L225 Difference]: With dead ends: 95029 [2024-12-02 13:11:35,857 INFO L226 Difference]: Without dead ends: 60314 [2024-12-02 13:11:35,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1412, Invalid=5068, Unknown=0, NotChecked=0, Total=6480 [2024-12-02 13:11:35,878 INFO L435 NwaCegarLoop]: 1561 mSDtfsCounter, 26274 mSDsluCounter, 15877 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26274 SdHoareTripleChecker+Valid, 17438 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 13:11:35,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26274 Valid, 17438 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 13:11:35,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60314 states. [2024-12-02 13:11:39,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60314 to 40897. [2024-12-02 13:11:39,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40897 states, 40895 states have (on average 1.2342340139381343) internal successors, (50474), 40896 states have internal predecessors, (50474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:11:39,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40897 states to 40897 states and 50474 transitions. [2024-12-02 13:11:39,554 INFO L78 Accepts]: Start accepts. Automaton has 40897 states and 50474 transitions. Word has length 107 [2024-12-02 13:11:39,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:11:39,554 INFO L471 AbstractCegarLoop]: Abstraction has 40897 states and 50474 transitions. [2024-12-02 13:11:39,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:11:39,555 INFO L276 IsEmpty]: Start isEmpty. Operand 40897 states and 50474 transitions. [2024-12-02 13:11:39,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 13:11:39,556 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:11:39,556 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:11:39,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 13:11:39,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:11:39,756 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:11:39,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:11:39,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1360617744, now seen corresponding path program 1 times [2024-12-02 13:11:39,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:11:39,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014936814] [2024-12-02 13:11:39,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:11:39,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:11:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:11:40,957 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:11:40,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:11:40,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014936814] [2024-12-02 13:11:40,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014936814] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:11:40,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715144467] [2024-12-02 13:11:40,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:11:40,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:11:40,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:11:40,959 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:11:40,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 13:11:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:11:41,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-12-02 13:11:41,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:11:44,097 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:11:44,097 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:11:51,299 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:11:51,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715144467] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:11:51,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:11:51,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 25] total 66 [2024-12-02 13:11:51,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100702645] [2024-12-02 13:11:51,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:11:51,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-12-02 13:11:51,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:11:51,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-12-02 13:11:51,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=3981, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 13:11:51,301 INFO L87 Difference]: Start difference. First operand 40897 states and 50474 transitions. Second operand has 66 states, 66 states have (on average 4.151515151515151) internal successors, (274), 66 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:14:52,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:14:52,935 INFO L93 Difference]: Finished difference Result 161451 states and 194796 transitions. [2024-12-02 13:14:52,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2024-12-02 13:14:52,936 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.151515151515151) internal successors, (274), 66 states have internal predecessors, (274), 0 states have call successors, (0), 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 108 [2024-12-02 13:14:52,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:14:53,083 INFO L225 Difference]: With dead ends: 161451 [2024-12-02 13:14:53,083 INFO L226 Difference]: Without dead ends: 150124 [2024-12-02 13:14:53,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 445 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90463 ImplicationChecksByTransitivity, 156.3s TimeCoverageRelationStatistics Valid=34766, Invalid=164596, Unknown=0, NotChecked=0, Total=199362 [2024-12-02 13:14:53,108 INFO L435 NwaCegarLoop]: 1708 mSDtfsCounter, 36839 mSDsluCounter, 39748 mSDsCounter, 0 mSdLazyCounter, 9305 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36839 SdHoareTripleChecker+Valid, 41456 SdHoareTripleChecker+Invalid, 9596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 9305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:14:53,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36839 Valid, 41456 Invalid, 9596 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [291 Valid, 9305 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2024-12-02 13:14:53,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150124 states. [2024-12-02 13:14:57,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150124 to 41282. [2024-12-02 13:14:57,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41282 states, 41280 states have (on average 1.2343023255813954) internal successors, (50952), 41281 states have internal predecessors, (50952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:14:57,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41282 states to 41282 states and 50952 transitions. [2024-12-02 13:14:57,988 INFO L78 Accepts]: Start accepts. Automaton has 41282 states and 50952 transitions. Word has length 108 [2024-12-02 13:14:57,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:14:57,988 INFO L471 AbstractCegarLoop]: Abstraction has 41282 states and 50952 transitions. [2024-12-02 13:14:57,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.151515151515151) internal successors, (274), 66 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:14:57,988 INFO L276 IsEmpty]: Start isEmpty. Operand 41282 states and 50952 transitions. [2024-12-02 13:14:57,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 13:14:57,990 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:14:57,990 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:14:57,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-12-02 13:14:58,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:14:58,190 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:14:58,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:14:58,191 INFO L85 PathProgramCache]: Analyzing trace with hash -516880752, now seen corresponding path program 1 times [2024-12-02 13:14:58,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:14:58,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044622385] [2024-12-02 13:14:58,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:14:58,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:14:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:15:00,050 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:15:00,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:15:00,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044622385] [2024-12-02 13:15:00,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044622385] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:15:00,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075649736] [2024-12-02 13:15:00,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:15:00,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:15:00,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:15:00,053 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:15:00,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 13:15:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:15:00,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-12-02 13:15:00,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:15:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 23 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:15:03,357 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:15:07,678 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:15:07,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075649736] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:15:07,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:15:07,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 23, 22] total 69 [2024-12-02 13:15:07,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980563017] [2024-12-02 13:15:07,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:15:07,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-12-02 13:15:07,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:15:07,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-12-02 13:15:07,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=4295, Unknown=0, NotChecked=0, Total=4692 [2024-12-02 13:15:07,680 INFO L87 Difference]: Start difference. First operand 41282 states and 50952 transitions. Second operand has 69 states, 69 states have (on average 4.260869565217392) internal successors, (294), 69 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:17:22,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:17:22,555 INFO L93 Difference]: Finished difference Result 80889 states and 98297 transitions. [2024-12-02 13:17:22,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 364 states. [2024-12-02 13:17:22,555 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.260869565217392) internal successors, (294), 69 states have internal predecessors, (294), 0 states have call successors, (0), 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 108 [2024-12-02 13:17:22,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:17:22,604 INFO L225 Difference]: With dead ends: 80889 [2024-12-02 13:17:22,604 INFO L226 Difference]: Without dead ends: 62103 [2024-12-02 13:17:22,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 428 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76929 ImplicationChecksByTransitivity, 123.6s TimeCoverageRelationStatistics Valid=25310, Invalid=159160, Unknown=0, NotChecked=0, Total=184470 [2024-12-02 13:17:22,623 INFO L435 NwaCegarLoop]: 1601 mSDtfsCounter, 26050 mSDsluCounter, 51582 mSDsCounter, 0 mSdLazyCounter, 6654 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26050 SdHoareTripleChecker+Valid, 53183 SdHoareTripleChecker+Invalid, 6955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 6654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:17:22,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26050 Valid, 53183 Invalid, 6955 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [301 Valid, 6654 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-12-02 13:17:22,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62103 states. [2024-12-02 13:17:27,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62103 to 44276. [2024-12-02 13:17:27,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44276 states, 44274 states have (on average 1.2313321588291097) internal successors, (54516), 44275 states have internal predecessors, (54516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:17:27,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44276 states to 44276 states and 54516 transitions. [2024-12-02 13:17:27,925 INFO L78 Accepts]: Start accepts. Automaton has 44276 states and 54516 transitions. Word has length 108 [2024-12-02 13:17:27,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:17:27,925 INFO L471 AbstractCegarLoop]: Abstraction has 44276 states and 54516 transitions. [2024-12-02 13:17:27,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.260869565217392) internal successors, (294), 69 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:17:27,925 INFO L276 IsEmpty]: Start isEmpty. Operand 44276 states and 54516 transitions. [2024-12-02 13:17:27,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 13:17:27,926 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:17:27,926 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:17:27,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-12-02 13:17:28,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:17:28,126 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:17:28,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:17:28,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1776170548, now seen corresponding path program 1 times [2024-12-02 13:17:28,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:17:28,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297873586] [2024-12-02 13:17:28,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:17:28,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:17:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:17:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 41 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:17:29,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:17:29,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297873586] [2024-12-02 13:17:29,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297873586] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:17:29,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543016696] [2024-12-02 13:17:29,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:17:29,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:17:29,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:17:29,763 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:17:29,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 13:17:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:17:29,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-12-02 13:17:29,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:17:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 41 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:17:35,228 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:17:42,229 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 41 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:17:42,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543016696] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:17:42,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:17:42,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 24] total 71 [2024-12-02 13:17:42,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007288277] [2024-12-02 13:17:42,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:17:42,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-12-02 13:17:42,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:17:42,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-12-02 13:17:42,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=4620, Unknown=0, NotChecked=0, Total=4970 [2024-12-02 13:17:42,231 INFO L87 Difference]: Start difference. First operand 44276 states and 54516 transitions. Second operand has 71 states, 71 states have (on average 3.788732394366197) internal successors, (269), 71 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:19:45,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:19:45,247 INFO L93 Difference]: Finished difference Result 85807 states and 104115 transitions. [2024-12-02 13:19:45,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 289 states. [2024-12-02 13:19:45,247 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.788732394366197) internal successors, (269), 71 states have internal predecessors, (269), 0 states have call successors, (0), 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 108 [2024-12-02 13:19:45,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:19:45,304 INFO L225 Difference]: With dead ends: 85807 [2024-12-02 13:19:45,304 INFO L226 Difference]: Without dead ends: 70176 [2024-12-02 13:19:45,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 356 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53007 ImplicationChecksByTransitivity, 110.7s TimeCoverageRelationStatistics Valid=21487, Invalid=106319, Unknown=0, NotChecked=0, Total=127806 [2024-12-02 13:19:45,321 INFO L435 NwaCegarLoop]: 1673 mSDtfsCounter, 33628 mSDsluCounter, 38334 mSDsCounter, 0 mSdLazyCounter, 6411 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33628 SdHoareTripleChecker+Valid, 40007 SdHoareTripleChecker+Invalid, 6730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 6411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:19:45,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33628 Valid, 40007 Invalid, 6730 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [319 Valid, 6411 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-12-02 13:19:45,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70176 states. [2024-12-02 13:19:50,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70176 to 44288. [2024-12-02 13:19:50,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44288 states, 44286 states have (on average 1.2317436661698957) internal successors, (54549), 44287 states have internal predecessors, (54549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:19:50,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44288 states to 44288 states and 54549 transitions. [2024-12-02 13:19:50,892 INFO L78 Accepts]: Start accepts. Automaton has 44288 states and 54549 transitions. Word has length 108 [2024-12-02 13:19:50,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:19:50,892 INFO L471 AbstractCegarLoop]: Abstraction has 44288 states and 54549 transitions. [2024-12-02 13:19:50,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.788732394366197) internal successors, (269), 71 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:19:50,892 INFO L276 IsEmpty]: Start isEmpty. Operand 44288 states and 54549 transitions. [2024-12-02 13:19:50,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 13:19:50,894 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:19:50,894 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:19:50,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-12-02 13:19:51,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:19:51,095 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:19:51,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:19:51,095 INFO L85 PathProgramCache]: Analyzing trace with hash -699853685, now seen corresponding path program 1 times [2024-12-02 13:19:51,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:19:51,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036633074] [2024-12-02 13:19:51,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:19:51,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:19:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:19:52,104 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 53 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:19:52,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:19:52,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036633074] [2024-12-02 13:19:52,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036633074] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:19:52,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5870964] [2024-12-02 13:19:52,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:19:52,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:19:52,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:19:52,106 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:19:52,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 13:19:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:19:52,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 13:19:52,237 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:19:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 82 proven. 144 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 13:19:53,047 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:19:55,542 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 53 proven. 173 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 13:19:55,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5870964] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:19:55,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:19:55,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11, 11] total 39 [2024-12-02 13:19:55,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830411731] [2024-12-02 13:19:55,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:19:55,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-12-02 13:19:55,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:19:55,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-12-02 13:19:55,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1392, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 13:19:55,544 INFO L87 Difference]: Start difference. First operand 44288 states and 54549 transitions. Second operand has 40 states, 40 states have (on average 8.5) internal successors, (340), 39 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:20:09,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:20:09,021 INFO L93 Difference]: Finished difference Result 82943 states and 101389 transitions. [2024-12-02 13:20:09,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-12-02 13:20:09,022 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 8.5) internal successors, (340), 39 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2024-12-02 13:20:09,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:20:09,076 INFO L225 Difference]: With dead ends: 82943 [2024-12-02 13:20:09,076 INFO L226 Difference]: Without dead ends: 65651 [2024-12-02 13:20:09,090 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4383 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=3039, Invalid=12213, Unknown=0, NotChecked=0, Total=15252 [2024-12-02 13:20:09,090 INFO L435 NwaCegarLoop]: 1536 mSDtfsCounter, 21604 mSDsluCounter, 15866 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21604 SdHoareTripleChecker+Valid, 17402 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:20:09,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21604 Valid, 17402 Invalid, 1684 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 1636 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 13:20:09,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65651 states. [2024-12-02 13:20:14,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65651 to 39648. [2024-12-02 13:20:14,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39648 states, 39646 states have (on average 1.226227109922817) internal successors, (48615), 39647 states have internal predecessors, (48615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:20:14,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39648 states to 39648 states and 48615 transitions. [2024-12-02 13:20:14,222 INFO L78 Accepts]: Start accepts. Automaton has 39648 states and 48615 transitions. Word has length 147 [2024-12-02 13:20:14,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:20:14,222 INFO L471 AbstractCegarLoop]: Abstraction has 39648 states and 48615 transitions. [2024-12-02 13:20:14,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 8.5) internal successors, (340), 39 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:20:14,222 INFO L276 IsEmpty]: Start isEmpty. Operand 39648 states and 48615 transitions. [2024-12-02 13:20:14,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 13:20:14,225 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:20:14,225 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:20:14,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 13:20:14,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-12-02 13:20:14,426 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:20:14,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:20:14,426 INFO L85 PathProgramCache]: Analyzing trace with hash -686891035, now seen corresponding path program 1 times [2024-12-02 13:20:14,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:20:14,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051831092] [2024-12-02 13:20:14,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:14,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:20:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:16,083 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 79 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:20:16,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:20:16,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051831092] [2024-12-02 13:20:16,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051831092] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:20:16,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935548389] [2024-12-02 13:20:16,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:16,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:20:16,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:20:16,084 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:20:16,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d11fea-9122-4261-aed8-7cbcbcfd55a0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 13:20:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:16,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-12-02 13:20:16,220 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:20:19,293 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 93 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:20:19,293 INFO L312 TraceCheckSpWp]: Computing backward predicates...