./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.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_3dea9ce6-99f6-45a8-98f4-8481028321ed/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dea9ce6-99f6-45a8-98f4-8481028321ed/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dea9ce6-99f6-45a8-98f4-8481028321ed/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dea9ce6-99f6-45a8-98f4-8481028321ed/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dea9ce6-99f6-45a8-98f4-8481028321ed/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dea9ce6-99f6-45a8-98f4-8481028321ed/bin/uautomizer-verify-aQ6SnzHsRB --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 9475964eaf3c99c585f18d5c2e0c0a26c1a8a589a644152df77fbb74995f4153 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:35:26,706 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:35:26,795 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dea9ce6-99f6-45a8-98f4-8481028321ed/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:35:26,801 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:35:26,801 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:35:26,847 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:35:26,848 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:35:26,848 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:35:26,848 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:35:26,849 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:35:26,850 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:35:26,850 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:35:26,851 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:35:26,851 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:35:26,851 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:35:26,851 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:35:26,852 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:35:26,852 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:35:26,852 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:35:26,852 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:35:26,853 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:35:26,853 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:35:26,853 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:35:26,853 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:35:26,853 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:35:26,853 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:35:26,853 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:35:26,853 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:35:26,854 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:35:26,854 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:35:26,854 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:35:26,854 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:35:26,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:35:26,855 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:35:26,855 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:35:26,855 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:35:26,855 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:35:26,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:35:26,856 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:35:26,856 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:35:26,856 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:35:26,856 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:35:26,856 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:35:26,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:35:26,857 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:35:26,857 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:35:26,857 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:35:26,858 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:35:26,858 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_3dea9ce6-99f6-45a8-98f4-8481028321ed/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 9475964eaf3c99c585f18d5c2e0c0a26c1a8a589a644152df77fbb74995f4153 [2024-11-27 23:35:27,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:35:27,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:35:27,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:35:27,195 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:35:27,196 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:35:27,197 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dea9ce6-99f6-45a8-98f4-8481028321ed/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-27 23:35:30,309 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dea9ce6-99f6-45a8-98f4-8481028321ed/bin/uautomizer-verify-aQ6SnzHsRB/data/93c113ac3/4e980446bee445288b1bb422c1e862e7/FLAG8862da050 [2024-11-27 23:35:30,699 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:35:30,702 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dea9ce6-99f6-45a8-98f4-8481028321ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-27 23:35:30,722 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dea9ce6-99f6-45a8-98f4-8481028321ed/bin/uautomizer-verify-aQ6SnzHsRB/data/93c113ac3/4e980446bee445288b1bb422c1e862e7/FLAG8862da050 [2024-11-27 23:35:30,749 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dea9ce6-99f6-45a8-98f4-8481028321ed/bin/uautomizer-verify-aQ6SnzHsRB/data/93c113ac3/4e980446bee445288b1bb422c1e862e7 [2024-11-27 23:35:30,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:35:30,756 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:35:30,757 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:35:30,760 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:35:30,765 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:35:30,766 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:35:30" (1/1) ... [2024-11-27 23:35:30,767 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@198f0bad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:30, skipping insertion in model container [2024-11-27 23:35:30,767 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:35:30" (1/1) ... [2024-11-27 23:35:30,823 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:35:31,174 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_3dea9ce6-99f6-45a8-98f4-8481028321ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6732,6745] [2024-11-27 23:35:31,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:35:31,256 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:35:31,304 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_3dea9ce6-99f6-45a8-98f4-8481028321ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6732,6745] [2024-11-27 23:35:31,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:35:31,347 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:35:31,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:31 WrapperNode [2024-11-27 23:35:31,348 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:35:31,349 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:35:31,349 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:35:31,349 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:35:31,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:31" (1/1) ... [2024-11-27 23:35:31,366 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:31" (1/1) ... [2024-11-27 23:35:31,399 INFO L138 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 537 [2024-11-27 23:35:31,400 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:35:31,400 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:35:31,400 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:35:31,400 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:35:31,417 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:31" (1/1) ... [2024-11-27 23:35:31,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:31" (1/1) ... [2024-11-27 23:35:31,421 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:31" (1/1) ... [2024-11-27 23:35:31,458 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]. [2024-11-27 23:35:31,458 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:31" (1/1) ... [2024-11-27 23:35:31,458 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:31" (1/1) ... [2024-11-27 23:35:31,470 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:31" (1/1) ... [2024-11-27 23:35:31,471 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:31" (1/1) ... [2024-11-27 23:35:31,479 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:31" (1/1) ... [2024-11-27 23:35:31,484 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:31" (1/1) ... [2024-11-27 23:35:31,490 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:31" (1/1) ... [2024-11-27 23:35:31,494 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:35:31,498 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:35:31,498 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:35:31,499 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:35:31,500 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:31" (1/1) ... [2024-11-27 23:35:31,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:35:31,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dea9ce6-99f6-45a8-98f4-8481028321ed/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:35:31,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dea9ce6-99f6-45a8-98f4-8481028321ed/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:35:31,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dea9ce6-99f6-45a8-98f4-8481028321ed/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:35:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:35:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:35:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:35:31,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:35:31,748 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:35:31,750 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:35:32,570 INFO L? ?]: Removed 47 outVars from TransFormulas that were not future-live. [2024-11-27 23:35:32,570 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:35:32,588 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:35:32,590 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-27 23:35:32,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:35:32 BoogieIcfgContainer [2024-11-27 23:35:32,591 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:35:32,594 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:35:32,594 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:35:32,601 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:35:32,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:35:30" (1/3) ... [2024-11-27 23:35:32,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d3fc10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:35:32, skipping insertion in model container [2024-11-27 23:35:32,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:31" (2/3) ... [2024-11-27 23:35:32,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d3fc10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:35:32, skipping insertion in model container [2024-11-27 23:35:32,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:35:32" (3/3) ... [2024-11-27 23:35:32,606 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-27 23:35:32,622 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:35:32,626 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c that has 1 procedures, 118 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-27 23:35:32,704 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:35:32,719 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;@40cf28d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:35:32,720 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:35:32,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 116 states have (on average 1.7327586206896552) internal successors, (201), 117 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:32,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-27 23:35:32,736 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:32,737 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:32,737 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:32,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:32,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1122612567, now seen corresponding path program 1 times [2024-11-27 23:35:32,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:32,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370779582] [2024-11-27 23:35:32,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:32,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:33,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:35:33,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:33,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370779582] [2024-11-27 23:35:33,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370779582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:33,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:33,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:35:33,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359242733] [2024-11-27 23:35:33,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:33,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:35:33,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:33,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:35:33,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:35:33,417 INFO L87 Difference]: Start difference. First operand has 118 states, 116 states have (on average 1.7327586206896552) internal successors, (201), 117 states have internal predecessors, (201), 0 states have call successors, (0), 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 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:33,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:33,487 INFO L93 Difference]: Finished difference Result 260 states and 422 transitions. [2024-11-27 23:35:33,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:35:33,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-27 23:35:33,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:33,501 INFO L225 Difference]: With dead ends: 260 [2024-11-27 23:35:33,503 INFO L226 Difference]: Without dead ends: 179 [2024-11-27 23:35:33,506 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 [2024-11-27 23:35:33,511 INFO L435 NwaCegarLoop]: 280 mSDtfsCounter, 133 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:33,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 403 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:35:33,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-27 23:35:33,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2024-11-27 23:35:33,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.4545454545454546) internal successors, (256), 176 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:33,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 256 transitions. [2024-11-27 23:35:33,572 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 256 transitions. Word has length 73 [2024-11-27 23:35:33,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:33,572 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 256 transitions. [2024-11-27 23:35:33,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:33,573 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 256 transitions. [2024-11-27 23:35:33,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-27 23:35:33,575 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:33,575 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:33,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:35:33,576 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:33,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:33,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1622464055, now seen corresponding path program 1 times [2024-11-27 23:35:33,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:33,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452110018] [2024-11-27 23:35:33,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:33,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:33,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:35:33,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:33,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452110018] [2024-11-27 23:35:33,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452110018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:33,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:33,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:35:33,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810799826] [2024-11-27 23:35:33,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:33,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:35:33,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:33,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:35:33,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:35:33,898 INFO L87 Difference]: Start difference. First operand 177 states and 256 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:33,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:33,954 INFO L93 Difference]: Finished difference Result 429 states and 656 transitions. [2024-11-27 23:35:33,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:35:33,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-27 23:35:33,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:33,957 INFO L225 Difference]: With dead ends: 429 [2024-11-27 23:35:33,957 INFO L226 Difference]: Without dead ends: 295 [2024-11-27 23:35:33,958 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 [2024-11-27 23:35:33,958 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 94 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:33,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 344 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:35:33,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-27 23:35:33,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 293. [2024-11-27 23:35:33,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.5068493150684932) internal successors, (440), 292 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:33,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 440 transitions. [2024-11-27 23:35:33,977 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 440 transitions. Word has length 74 [2024-11-27 23:35:33,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:33,978 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 440 transitions. [2024-11-27 23:35:33,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:33,978 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 440 transitions. [2024-11-27 23:35:33,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-27 23:35:33,979 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:33,979 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:33,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:35:33,979 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:33,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:33,980 INFO L85 PathProgramCache]: Analyzing trace with hash 549627260, now seen corresponding path program 1 times [2024-11-27 23:35:33,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:33,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151370825] [2024-11-27 23:35:33,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:33,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:34,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:35:34,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:34,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151370825] [2024-11-27 23:35:34,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151370825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:34,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:34,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:35:34,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912462078] [2024-11-27 23:35:34,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:34,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:35:34,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:34,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:35:34,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:35:34,154 INFO L87 Difference]: Start difference. First operand 293 states and 440 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:34,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:34,188 INFO L93 Difference]: Finished difference Result 761 states and 1182 transitions. [2024-11-27 23:35:34,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:35:34,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2024-11-27 23:35:34,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:34,192 INFO L225 Difference]: With dead ends: 761 [2024-11-27 23:35:34,192 INFO L226 Difference]: Without dead ends: 511 [2024-11-27 23:35:34,193 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 [2024-11-27 23:35:34,194 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 89 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:34,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 340 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:35:34,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2024-11-27 23:35:34,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 509. [2024-11-27 23:35:34,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 508 states have (on average 1.5354330708661417) internal successors, (780), 508 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:34,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 780 transitions. [2024-11-27 23:35:34,241 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 780 transitions. Word has length 75 [2024-11-27 23:35:34,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:34,242 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 780 transitions. [2024-11-27 23:35:34,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:34,242 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 780 transitions. [2024-11-27 23:35:34,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 23:35:34,243 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:34,243 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:34,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:35:34,243 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:34,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:34,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1347673334, now seen corresponding path program 1 times [2024-11-27 23:35:34,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:34,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557764920] [2024-11-27 23:35:34,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:34,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:34,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:35:34,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:34,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557764920] [2024-11-27 23:35:34,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557764920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:34,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:34,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:35:34,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935916407] [2024-11-27 23:35:34,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:34,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:35:34,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:34,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:35:34,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:35:34,442 INFO L87 Difference]: Start difference. First operand 509 states and 780 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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) [2024-11-27 23:35:34,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:34,489 INFO L93 Difference]: Finished difference Result 1377 states and 2150 transitions. [2024-11-27 23:35:34,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:35:34,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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 76 [2024-11-27 23:35:34,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:34,501 INFO L225 Difference]: With dead ends: 1377 [2024-11-27 23:35:34,501 INFO L226 Difference]: Without dead ends: 911 [2024-11-27 23:35:34,503 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 [2024-11-27 23:35:34,503 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 84 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:34,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 336 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:35:34,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2024-11-27 23:35:34,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 909. [2024-11-27 23:35:34,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 908 states have (on average 1.5462555066079295) internal successors, (1404), 908 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:34,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1404 transitions. [2024-11-27 23:35:34,572 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1404 transitions. Word has length 76 [2024-11-27 23:35:34,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:34,572 INFO L471 AbstractCegarLoop]: Abstraction has 909 states and 1404 transitions. [2024-11-27 23:35:34,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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) [2024-11-27 23:35:34,573 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1404 transitions. [2024-11-27 23:35:34,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-27 23:35:34,574 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:34,574 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:34,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:35:34,574 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:34,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:34,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1762980839, now seen corresponding path program 1 times [2024-11-27 23:35:34,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:34,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555435025] [2024-11-27 23:35:34,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:34,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:34,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:35:34,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:34,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555435025] [2024-11-27 23:35:34,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555435025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:34,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:34,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:35:34,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409343589] [2024-11-27 23:35:34,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:34,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:35:34,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:34,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:35:34,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:35:34,742 INFO L87 Difference]: Start difference. First operand 909 states and 1404 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:34,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:34,802 INFO L93 Difference]: Finished difference Result 2513 states and 3918 transitions. [2024-11-27 23:35:34,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:35:34,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2024-11-27 23:35:34,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:34,814 INFO L225 Difference]: With dead ends: 2513 [2024-11-27 23:35:34,814 INFO L226 Difference]: Without dead ends: 1647 [2024-11-27 23:35:34,815 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 [2024-11-27 23:35:34,816 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 79 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:34,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 332 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:35:34,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2024-11-27 23:35:34,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1645. [2024-11-27 23:35:34,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 1.5450121654501217) internal successors, (2540), 1644 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:34,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 2540 transitions. [2024-11-27 23:35:34,903 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 2540 transitions. Word has length 77 [2024-11-27 23:35:34,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:34,904 INFO L471 AbstractCegarLoop]: Abstraction has 1645 states and 2540 transitions. [2024-11-27 23:35:34,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:34,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 2540 transitions. [2024-11-27 23:35:34,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-27 23:35:34,906 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:34,907 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:34,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:35:34,907 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:34,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:34,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1296361934, now seen corresponding path program 1 times [2024-11-27 23:35:34,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:34,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480537776] [2024-11-27 23:35:34,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:34,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:35,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:35:35,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:35,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480537776] [2024-11-27 23:35:35,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480537776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:35,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:35,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:35:35,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818802700] [2024-11-27 23:35:35,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:35,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:35:35,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:35,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:35:35,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:35:35,317 INFO L87 Difference]: Start difference. First operand 1645 states and 2540 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:36,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:36,027 INFO L93 Difference]: Finished difference Result 20869 states and 32504 transitions. [2024-11-27 23:35:36,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 23:35:36,029 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-27 23:35:36,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:36,108 INFO L225 Difference]: With dead ends: 20869 [2024-11-27 23:35:36,109 INFO L226 Difference]: Without dead ends: 19267 [2024-11-27 23:35:36,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2024-11-27 23:35:36,122 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 1770 mSDsluCounter, 2750 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1770 SdHoareTripleChecker+Valid, 2903 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:36,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1770 Valid, 2903 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:35:36,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19267 states. [2024-11-27 23:35:36,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19267 to 3245. [2024-11-27 23:35:36,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3245 states, 3244 states have (on average 1.532675709001233) internal successors, (4972), 3244 states have internal predecessors, (4972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:36,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3245 states to 3245 states and 4972 transitions. [2024-11-27 23:35:36,463 INFO L78 Accepts]: Start accepts. Automaton has 3245 states and 4972 transitions. Word has length 78 [2024-11-27 23:35:36,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:36,464 INFO L471 AbstractCegarLoop]: Abstraction has 3245 states and 4972 transitions. [2024-11-27 23:35:36,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:36,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3245 states and 4972 transitions. [2024-11-27 23:35:36,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-27 23:35:36,468 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:36,468 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:36,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:35:36,468 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:36,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:36,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1185122290, now seen corresponding path program 1 times [2024-11-27 23:35:36,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:36,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264639158] [2024-11-27 23:35:36,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:36,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:36,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:35:36,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:36,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264639158] [2024-11-27 23:35:36,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264639158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:36,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:36,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:35:36,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477242583] [2024-11-27 23:35:36,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:36,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:35:36,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:36,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:35:36,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:35:36,710 INFO L87 Difference]: Start difference. First operand 3245 states and 4972 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:36,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:36,798 INFO L93 Difference]: Finished difference Result 9297 states and 14222 transitions. [2024-11-27 23:35:36,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:35:36,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-27 23:35:36,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:36,836 INFO L225 Difference]: With dead ends: 9297 [2024-11-27 23:35:36,836 INFO L226 Difference]: Without dead ends: 6095 [2024-11-27 23:35:36,840 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 [2024-11-27 23:35:36,841 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 69 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:36,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 262 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:35:36,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6095 states. [2024-11-27 23:35:36,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6095 to 6029. [2024-11-27 23:35:36,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6029 states, 6028 states have (on average 1.504313205043132) internal successors, (9068), 6028 states have internal predecessors, (9068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:36,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6029 states to 6029 states and 9068 transitions. [2024-11-27 23:35:36,996 INFO L78 Accepts]: Start accepts. Automaton has 6029 states and 9068 transitions. Word has length 80 [2024-11-27 23:35:36,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:36,996 INFO L471 AbstractCegarLoop]: Abstraction has 6029 states and 9068 transitions. [2024-11-27 23:35:36,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:36,997 INFO L276 IsEmpty]: Start isEmpty. Operand 6029 states and 9068 transitions. [2024-11-27 23:35:36,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-27 23:35:36,998 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:36,998 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:36,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:35:36,998 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:36,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:37,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1164119635, now seen corresponding path program 1 times [2024-11-27 23:35:37,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:37,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019362811] [2024-11-27 23:35:37,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:37,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:37,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:35:37,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:37,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019362811] [2024-11-27 23:35:37,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019362811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:37,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:37,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:35:37,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880243081] [2024-11-27 23:35:37,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:37,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:35:37,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:37,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:35:37,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:35:37,607 INFO L87 Difference]: Start difference. First operand 6029 states and 9068 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:38,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:38,060 INFO L93 Difference]: Finished difference Result 12017 states and 18094 transitions. [2024-11-27 23:35:38,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:35:38,061 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-27 23:35:38,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:38,078 INFO L225 Difference]: With dead ends: 12017 [2024-11-27 23:35:38,079 INFO L226 Difference]: Without dead ends: 6031 [2024-11-27 23:35:38,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:35:38,086 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 472 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:38,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 747 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:35:38,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6031 states. [2024-11-27 23:35:38,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6031 to 6029. [2024-11-27 23:35:38,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6029 states, 6028 states have (on average 1.493696084936961) internal successors, (9004), 6028 states have internal predecessors, (9004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:38,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6029 states to 6029 states and 9004 transitions. [2024-11-27 23:35:38,268 INFO L78 Accepts]: Start accepts. Automaton has 6029 states and 9004 transitions. Word has length 80 [2024-11-27 23:35:38,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:38,268 INFO L471 AbstractCegarLoop]: Abstraction has 6029 states and 9004 transitions. [2024-11-27 23:35:38,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:38,268 INFO L276 IsEmpty]: Start isEmpty. Operand 6029 states and 9004 transitions. [2024-11-27 23:35:38,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-27 23:35:38,270 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:38,270 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:38,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:35:38,270 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:38,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:38,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1866969369, now seen corresponding path program 1 times [2024-11-27 23:35:38,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:38,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825160324] [2024-11-27 23:35:38,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:38,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:38,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:35:38,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:38,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825160324] [2024-11-27 23:35:38,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825160324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:38,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:38,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:35:38,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134056243] [2024-11-27 23:35:38,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:38,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:35:38,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:38,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:35:38,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:35:38,415 INFO L87 Difference]: Start difference. First operand 6029 states and 9004 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:38,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:38,485 INFO L93 Difference]: Finished difference Result 11796 states and 17778 transitions. [2024-11-27 23:35:38,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:35:38,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2024-11-27 23:35:38,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:38,512 INFO L225 Difference]: With dead ends: 11796 [2024-11-27 23:35:38,513 INFO L226 Difference]: Without dead ends: 8593 [2024-11-27 23:35:38,520 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 [2024-11-27 23:35:38,522 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 101 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:38,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 356 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:35:38,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8593 states. [2024-11-27 23:35:38,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8593 to 8591. [2024-11-27 23:35:38,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 8590 states have (on average 1.4917345750873108) internal successors, (12814), 8590 states have internal predecessors, (12814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:38,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12814 transitions. [2024-11-27 23:35:38,829 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12814 transitions. Word has length 81 [2024-11-27 23:35:38,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:38,829 INFO L471 AbstractCegarLoop]: Abstraction has 8591 states and 12814 transitions. [2024-11-27 23:35:38,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:38,829 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12814 transitions. [2024-11-27 23:35:38,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-27 23:35:38,830 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:38,830 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:38,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:35:38,831 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:38,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:38,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1729879629, now seen corresponding path program 1 times [2024-11-27 23:35:38,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:38,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705621490] [2024-11-27 23:35:38,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:38,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:39,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:35:39,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:39,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705621490] [2024-11-27 23:35:39,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705621490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:39,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:39,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:35:39,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163437346] [2024-11-27 23:35:39,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:39,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:35:39,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:39,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:35:39,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:35:39,050 INFO L87 Difference]: Start difference. First operand 8591 states and 12814 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:39,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:39,228 INFO L93 Difference]: Finished difference Result 17137 states and 25583 transitions. [2024-11-27 23:35:39,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:35:39,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2024-11-27 23:35:39,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:39,248 INFO L225 Difference]: With dead ends: 17137 [2024-11-27 23:35:39,248 INFO L226 Difference]: Without dead ends: 8591 [2024-11-27 23:35:39,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:35:39,258 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 362 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:39,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 133 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:35:39,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8591 states. [2024-11-27 23:35:39,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8591 to 8591. [2024-11-27 23:35:39,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 8590 states have (on average 1.480558789289872) internal successors, (12718), 8590 states have internal predecessors, (12718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:39,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12718 transitions. [2024-11-27 23:35:39,454 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12718 transitions. Word has length 81 [2024-11-27 23:35:39,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:39,454 INFO L471 AbstractCegarLoop]: Abstraction has 8591 states and 12718 transitions. [2024-11-27 23:35:39,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:39,455 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12718 transitions. [2024-11-27 23:35:39,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-27 23:35:39,456 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:39,456 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:39,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 23:35:39,457 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:39,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:39,458 INFO L85 PathProgramCache]: Analyzing trace with hash -864347240, now seen corresponding path program 1 times [2024-11-27 23:35:39,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:39,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060868093] [2024-11-27 23:35:39,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:39,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:39,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:35:39,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:39,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060868093] [2024-11-27 23:35:39,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060868093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:39,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:39,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:35:39,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925440700] [2024-11-27 23:35:39,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:39,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:35:39,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:39,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:35:39,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:35:39,637 INFO L87 Difference]: Start difference. First operand 8591 states and 12718 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:39,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:39,808 INFO L93 Difference]: Finished difference Result 17137 states and 25391 transitions. [2024-11-27 23:35:39,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:35:39,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2024-11-27 23:35:39,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:39,827 INFO L225 Difference]: With dead ends: 17137 [2024-11-27 23:35:39,828 INFO L226 Difference]: Without dead ends: 8591 [2024-11-27 23:35:39,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:35:39,838 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 372 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:39,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 125 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:35:39,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8591 states. [2024-11-27 23:35:39,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8591 to 8591. [2024-11-27 23:35:40,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 8590 states have (on average 1.4693830034924331) internal successors, (12622), 8590 states have internal predecessors, (12622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:40,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12622 transitions. [2024-11-27 23:35:40,017 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12622 transitions. Word has length 81 [2024-11-27 23:35:40,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:40,018 INFO L471 AbstractCegarLoop]: Abstraction has 8591 states and 12622 transitions. [2024-11-27 23:35:40,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:40,019 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12622 transitions. [2024-11-27 23:35:40,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-27 23:35:40,020 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:40,020 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:40,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 23:35:40,021 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:40,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:40,021 INFO L85 PathProgramCache]: Analyzing trace with hash -736261933, now seen corresponding path program 1 times [2024-11-27 23:35:40,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:40,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260702844] [2024-11-27 23:35:40,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:40,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:40,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:35:40,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:40,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260702844] [2024-11-27 23:35:40,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260702844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:40,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:40,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:35:40,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909442864] [2024-11-27 23:35:40,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:40,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:35:40,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:40,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:35:40,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:35:40,192 INFO L87 Difference]: Start difference. First operand 8591 states and 12622 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:40,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:40,393 INFO L93 Difference]: Finished difference Result 17137 states and 25199 transitions. [2024-11-27 23:35:40,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:35:40,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2024-11-27 23:35:40,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:40,412 INFO L225 Difference]: With dead ends: 17137 [2024-11-27 23:35:40,412 INFO L226 Difference]: Without dead ends: 8591 [2024-11-27 23:35:40,417 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:35:40,418 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 395 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:40,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 109 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:35:40,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8591 states. [2024-11-27 23:35:40,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8591 to 8591. [2024-11-27 23:35:40,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 8590 states have (on average 1.4582072176949943) internal successors, (12526), 8590 states have internal predecessors, (12526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:40,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12526 transitions. [2024-11-27 23:35:40,535 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12526 transitions. Word has length 81 [2024-11-27 23:35:40,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:40,535 INFO L471 AbstractCegarLoop]: Abstraction has 8591 states and 12526 transitions. [2024-11-27 23:35:40,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:40,536 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12526 transitions. [2024-11-27 23:35:40,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-27 23:35:40,536 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:40,536 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:40,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 23:35:40,537 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:40,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:40,537 INFO L85 PathProgramCache]: Analyzing trace with hash -367990706, now seen corresponding path program 1 times [2024-11-27 23:35:40,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:40,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551866548] [2024-11-27 23:35:40,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:40,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:40,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:35:40,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:40,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551866548] [2024-11-27 23:35:40,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551866548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:40,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:40,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:35:40,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92872741] [2024-11-27 23:35:40,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:40,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:35:40,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:40,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:35:40,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:35:40,722 INFO L87 Difference]: Start difference. First operand 8591 states and 12526 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:40,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:40,883 INFO L93 Difference]: Finished difference Result 17137 states and 25007 transitions. [2024-11-27 23:35:40,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:35:40,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2024-11-27 23:35:40,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:40,904 INFO L225 Difference]: With dead ends: 17137 [2024-11-27 23:35:40,904 INFO L226 Difference]: Without dead ends: 8591 [2024-11-27 23:35:40,913 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:35:40,915 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 379 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:40,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 117 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:35:40,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8591 states. [2024-11-27 23:35:41,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8591 to 8591. [2024-11-27 23:35:41,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 8590 states have (on average 1.4470314318975552) internal successors, (12430), 8590 states have internal predecessors, (12430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:41,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12430 transitions. [2024-11-27 23:35:41,084 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12430 transitions. Word has length 81 [2024-11-27 23:35:41,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:41,085 INFO L471 AbstractCegarLoop]: Abstraction has 8591 states and 12430 transitions. [2024-11-27 23:35:41,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:41,085 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12430 transitions. [2024-11-27 23:35:41,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-27 23:35:41,086 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:41,086 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:41,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 23:35:41,086 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:41,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:41,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1130854413, now seen corresponding path program 1 times [2024-11-27 23:35:41,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:41,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736772852] [2024-11-27 23:35:41,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:41,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:41,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:35:41,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:41,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736772852] [2024-11-27 23:35:41,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736772852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:41,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:41,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:35:41,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506245363] [2024-11-27 23:35:41,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:41,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:35:41,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:41,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:35:41,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:35:41,592 INFO L87 Difference]: Start difference. First operand 8591 states and 12430 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:41,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:41,656 INFO L93 Difference]: Finished difference Result 8849 states and 12815 transitions. [2024-11-27 23:35:41,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:35:41,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2024-11-27 23:35:41,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:41,678 INFO L225 Difference]: With dead ends: 8849 [2024-11-27 23:35:41,678 INFO L226 Difference]: Without dead ends: 8847 [2024-11-27 23:35:41,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:35:41,682 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 0 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:41,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 589 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:35:41,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8847 states. [2024-11-27 23:35:41,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8847 to 8847. [2024-11-27 23:35:41,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8847 states, 8846 states have (on average 1.4304770517748135) internal successors, (12654), 8846 states have internal predecessors, (12654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:41,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 12654 transitions. [2024-11-27 23:35:41,855 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 12654 transitions. Word has length 81 [2024-11-27 23:35:41,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:41,856 INFO L471 AbstractCegarLoop]: Abstraction has 8847 states and 12654 transitions. [2024-11-27 23:35:41,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:41,856 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 12654 transitions. [2024-11-27 23:35:41,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-27 23:35:41,864 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:41,864 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:41,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 23:35:41,865 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:41,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:41,865 INFO L85 PathProgramCache]: Analyzing trace with hash 905576252, now seen corresponding path program 1 times [2024-11-27 23:35:41,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:41,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580220948] [2024-11-27 23:35:41,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:41,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:42,147 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:35:42,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:42,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580220948] [2024-11-27 23:35:42,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580220948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:42,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:42,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:35:42,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530957360] [2024-11-27 23:35:42,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:42,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:35:42,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:42,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:35:42,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:35:42,149 INFO L87 Difference]: Start difference. First operand 8847 states and 12654 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:42,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:42,532 INFO L93 Difference]: Finished difference Result 63293 states and 90581 transitions. [2024-11-27 23:35:42,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:35:42,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 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 112 [2024-11-27 23:35:42,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:42,663 INFO L225 Difference]: With dead ends: 63293 [2024-11-27 23:35:42,663 INFO L226 Difference]: Without dead ends: 54491 [2024-11-27 23:35:42,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:35:42,682 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 1549 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:42,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 1131 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:35:42,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54491 states. [2024-11-27 23:35:43,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54491 to 17647. [2024-11-27 23:35:43,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17647 states, 17646 states have (on average 1.4261589028675055) internal successors, (25166), 17646 states have internal predecessors, (25166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:43,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17647 states to 17647 states and 25166 transitions. [2024-11-27 23:35:43,261 INFO L78 Accepts]: Start accepts. Automaton has 17647 states and 25166 transitions. Word has length 112 [2024-11-27 23:35:43,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:43,262 INFO L471 AbstractCegarLoop]: Abstraction has 17647 states and 25166 transitions. [2024-11-27 23:35:43,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:43,262 INFO L276 IsEmpty]: Start isEmpty. Operand 17647 states and 25166 transitions. [2024-11-27 23:35:43,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-27 23:35:43,267 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:43,267 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:43,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 23:35:43,268 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:43,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:43,268 INFO L85 PathProgramCache]: Analyzing trace with hash -818965810, now seen corresponding path program 1 times [2024-11-27 23:35:43,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:43,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89833431] [2024-11-27 23:35:43,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:43,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:43,596 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 23:35:43,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:43,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89833431] [2024-11-27 23:35:43,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89833431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:43,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:43,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:35:43,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533478311] [2024-11-27 23:35:43,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:43,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:35:43,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:43,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:35:43,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:35:43,600 INFO L87 Difference]: Start difference. First operand 17647 states and 25166 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:44,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:44,003 INFO L93 Difference]: Finished difference Result 72093 states and 103093 transitions. [2024-11-27 23:35:44,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:35:44,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 112 [2024-11-27 23:35:44,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:44,167 INFO L225 Difference]: With dead ends: 72093 [2024-11-27 23:35:44,168 INFO L226 Difference]: Without dead ends: 63291 [2024-11-27 23:35:44,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:35:44,190 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 1440 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:44,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1440 Valid, 1178 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:35:44,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63291 states. [2024-11-27 23:35:44,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63291 to 30863. [2024-11-27 23:35:44,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30863 states, 30862 states have (on average 1.4209707731190462) internal successors, (43854), 30862 states have internal predecessors, (43854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:45,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30863 states to 30863 states and 43854 transitions. [2024-11-27 23:35:45,047 INFO L78 Accepts]: Start accepts. Automaton has 30863 states and 43854 transitions. Word has length 112 [2024-11-27 23:35:45,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:45,047 INFO L471 AbstractCegarLoop]: Abstraction has 30863 states and 43854 transitions. [2024-11-27 23:35:45,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:45,048 INFO L276 IsEmpty]: Start isEmpty. Operand 30863 states and 43854 transitions. [2024-11-27 23:35:45,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-27 23:35:45,055 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:45,055 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:45,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 23:35:45,055 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:45,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:45,057 INFO L85 PathProgramCache]: Analyzing trace with hash 334980296, now seen corresponding path program 1 times [2024-11-27 23:35:45,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:45,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248661977] [2024-11-27 23:35:45,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:45,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:45,407 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 23:35:45,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:45,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248661977] [2024-11-27 23:35:45,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248661977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:45,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:45,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:35:45,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449750523] [2024-11-27 23:35:45,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:45,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:35:45,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:45,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:35:45,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:35:45,409 INFO L87 Difference]: Start difference. First operand 30863 states and 43854 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:45,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:45,954 INFO L93 Difference]: Finished difference Result 80893 states and 115605 transitions. [2024-11-27 23:35:45,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:35:45,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 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 112 [2024-11-27 23:35:45,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:46,165 INFO L225 Difference]: With dead ends: 80893 [2024-11-27 23:35:46,165 INFO L226 Difference]: Without dead ends: 72091 [2024-11-27 23:35:46,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:35:46,193 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 1270 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:46,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1270 Valid, 1273 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:35:46,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72091 states. [2024-11-27 23:35:47,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72091 to 39663. [2024-11-27 23:35:47,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39663 states, 39662 states have (on average 1.4211587917906308) internal successors, (56366), 39662 states have internal predecessors, (56366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:47,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39663 states to 39663 states and 56366 transitions. [2024-11-27 23:35:47,429 INFO L78 Accepts]: Start accepts. Automaton has 39663 states and 56366 transitions. Word has length 112 [2024-11-27 23:35:47,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:47,429 INFO L471 AbstractCegarLoop]: Abstraction has 39663 states and 56366 transitions. [2024-11-27 23:35:47,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:47,430 INFO L276 IsEmpty]: Start isEmpty. Operand 39663 states and 56366 transitions. [2024-11-27 23:35:47,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-27 23:35:47,436 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:47,436 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:47,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 23:35:47,436 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:47,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:47,437 INFO L85 PathProgramCache]: Analyzing trace with hash -522920382, now seen corresponding path program 1 times [2024-11-27 23:35:47,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:47,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711254072] [2024-11-27 23:35:47,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:47,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:47,701 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-27 23:35:47,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:47,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711254072] [2024-11-27 23:35:47,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711254072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:47,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:47,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:35:47,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74510399] [2024-11-27 23:35:47,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:47,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:35:47,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:47,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:35:47,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:35:47,703 INFO L87 Difference]: Start difference. First operand 39663 states and 56366 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:48,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:48,172 INFO L93 Difference]: Finished difference Result 89693 states and 128117 transitions. [2024-11-27 23:35:48,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:35:48,173 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 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 112 [2024-11-27 23:35:48,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:48,485 INFO L225 Difference]: With dead ends: 89693 [2024-11-27 23:35:48,489 INFO L226 Difference]: Without dead ends: 80891 [2024-11-27 23:35:48,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:35:48,512 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 1267 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:48,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1267 Valid, 1352 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:35:48,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80891 states. [2024-11-27 23:35:49,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80891 to 48463. [2024-11-27 23:35:49,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48463 states, 48462 states have (on average 1.4212785275060873) internal successors, (68878), 48462 states have internal predecessors, (68878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:49,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48463 states to 48463 states and 68878 transitions. [2024-11-27 23:35:49,588 INFO L78 Accepts]: Start accepts. Automaton has 48463 states and 68878 transitions. Word has length 112 [2024-11-27 23:35:49,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:49,588 INFO L471 AbstractCegarLoop]: Abstraction has 48463 states and 68878 transitions. [2024-11-27 23:35:49,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:49,589 INFO L276 IsEmpty]: Start isEmpty. Operand 48463 states and 68878 transitions. [2024-11-27 23:35:49,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-27 23:35:49,598 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:49,599 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:49,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 23:35:49,599 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:49,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:49,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1413953610, now seen corresponding path program 1 times [2024-11-27 23:35:49,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:49,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579421725] [2024-11-27 23:35:49,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:49,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:49,923 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-27 23:35:49,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:49,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579421725] [2024-11-27 23:35:49,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579421725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:49,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:49,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:35:49,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559759015] [2024-11-27 23:35:49,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:49,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:35:49,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:49,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:35:49,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:35:49,925 INFO L87 Difference]: Start difference. First operand 48463 states and 68878 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:50,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:50,607 INFO L93 Difference]: Finished difference Result 98493 states and 140629 transitions. [2024-11-27 23:35:50,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:35:50,607 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 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 112 [2024-11-27 23:35:50,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:50,725 INFO L225 Difference]: With dead ends: 98493 [2024-11-27 23:35:50,725 INFO L226 Difference]: Without dead ends: 89691 [2024-11-27 23:35:50,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:35:50,745 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 1373 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:50,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 1440 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:35:50,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89691 states. [2024-11-27 23:35:51,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89691 to 57263. [2024-11-27 23:35:51,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57263 states, 57262 states have (on average 1.4213614613530787) internal successors, (81390), 57262 states have internal predecessors, (81390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:51,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57263 states to 57263 states and 81390 transitions. [2024-11-27 23:35:51,817 INFO L78 Accepts]: Start accepts. Automaton has 57263 states and 81390 transitions. Word has length 112 [2024-11-27 23:35:51,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:51,817 INFO L471 AbstractCegarLoop]: Abstraction has 57263 states and 81390 transitions. [2024-11-27 23:35:51,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:51,817 INFO L276 IsEmpty]: Start isEmpty. Operand 57263 states and 81390 transitions. [2024-11-27 23:35:51,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-27 23:35:51,824 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:51,824 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:51,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 23:35:51,825 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:51,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:51,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1782817293, now seen corresponding path program 1 times [2024-11-27 23:35:51,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:51,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475399112] [2024-11-27 23:35:51,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:51,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 23:35:52,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:52,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475399112] [2024-11-27 23:35:52,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475399112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:52,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:52,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:35:52,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113013847] [2024-11-27 23:35:52,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:52,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:35:52,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:52,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:35:52,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:35:52,053 INFO L87 Difference]: Start difference. First operand 57263 states and 81390 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:52,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:52,727 INFO L93 Difference]: Finished difference Result 101725 states and 145333 transitions. [2024-11-27 23:35:52,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:35:52,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-11-27 23:35:52,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:52,860 INFO L225 Difference]: With dead ends: 101725 [2024-11-27 23:35:52,860 INFO L226 Difference]: Without dead ends: 95707 [2024-11-27 23:35:52,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:35:52,883 INFO L435 NwaCegarLoop]: 253 mSDtfsCounter, 1368 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:52,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 1334 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:35:52,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95707 states. [2024-11-27 23:35:54,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95707 to 63279. [2024-11-27 23:35:54,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63279 states, 63278 states have (on average 1.4227693669205728) internal successors, (90030), 63278 states have internal predecessors, (90030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:54,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63279 states to 63279 states and 90030 transitions. [2024-11-27 23:35:54,403 INFO L78 Accepts]: Start accepts. Automaton has 63279 states and 90030 transitions. Word has length 113 [2024-11-27 23:35:54,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:54,403 INFO L471 AbstractCegarLoop]: Abstraction has 63279 states and 90030 transitions. [2024-11-27 23:35:54,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:54,403 INFO L276 IsEmpty]: Start isEmpty. Operand 63279 states and 90030 transitions. [2024-11-27 23:35:54,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-27 23:35:54,409 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:54,410 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:54,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 23:35:54,410 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:54,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:54,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1645382406, now seen corresponding path program 1 times [2024-11-27 23:35:54,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:54,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432756121] [2024-11-27 23:35:54,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:54,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:55,225 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:35:55,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:55,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432756121] [2024-11-27 23:35:55,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432756121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:35:55,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451531841] [2024-11-27 23:35:55,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:55,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:55,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dea9ce6-99f6-45a8-98f4-8481028321ed/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:35:55,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dea9ce6-99f6-45a8-98f4-8481028321ed/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:35:55,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dea9ce6-99f6-45a8-98f4-8481028321ed/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:35:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:55,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 23:35:55,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:35:56,750 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:35:56,750 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:35:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:35:58,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451531841] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:35:58,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:35:58,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2024-11-27 23:35:58,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838367082] [2024-11-27 23:35:58,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:35:58,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-27 23:35:58,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:58,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-27 23:35:58,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2024-11-27 23:35:58,212 INFO L87 Difference]: Start difference. First operand 63279 states and 90030 transitions. Second operand has 30 states, 30 states have (on average 10.666666666666666) internal successors, (320), 29 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:36:08,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:36:08,102 INFO L93 Difference]: Finished difference Result 626025 states and 880855 transitions. [2024-11-27 23:36:08,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2024-11-27 23:36:08,105 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 10.666666666666666) internal successors, (320), 29 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2024-11-27 23:36:08,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:36:08,847 INFO L225 Difference]: With dead ends: 626025 [2024-11-27 23:36:08,847 INFO L226 Difference]: Without dead ends: 562791 [2024-11-27 23:36:08,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11330 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=4551, Invalid=25899, Unknown=0, NotChecked=0, Total=30450 [2024-11-27 23:36:08,947 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 5477 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 2588 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5477 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 2664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:36:08,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5477 Valid, 2156 Invalid, 2664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2588 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-27 23:36:09,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562791 states. [2024-11-27 23:36:15,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562791 to 360403. [2024-11-27 23:36:15,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360403 states, 360402 states have (on average 1.4152585168783747) internal successors, (510062), 360402 states have internal predecessors, (510062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:36:16,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360403 states to 360403 states and 510062 transitions. [2024-11-27 23:36:16,089 INFO L78 Accepts]: Start accepts. Automaton has 360403 states and 510062 transitions. Word has length 114 [2024-11-27 23:36:16,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:36:16,089 INFO L471 AbstractCegarLoop]: Abstraction has 360403 states and 510062 transitions. [2024-11-27 23:36:16,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 10.666666666666666) internal successors, (320), 29 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:36:16,089 INFO L276 IsEmpty]: Start isEmpty. Operand 360403 states and 510062 transitions. [2024-11-27 23:36:16,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-27 23:36:16,126 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:36:16,126 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:36:16,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dea9ce6-99f6-45a8-98f4-8481028321ed/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:36:16,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dea9ce6-99f6-45a8-98f4-8481028321ed/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-27 23:36:16,327 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:36:16,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:36:16,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1100155192, now seen corresponding path program 1 times [2024-11-27 23:36:16,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:36:16,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037245539] [2024-11-27 23:36:16,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:36:16,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:36:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:36:16,469 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:36:16,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:36:16,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037245539] [2024-11-27 23:36:16,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037245539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:36:16,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:36:16,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:36:16,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221326527] [2024-11-27 23:36:16,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:36:16,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:36:16,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:36:16,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:36:16,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:36:16,472 INFO L87 Difference]: Start difference. First operand 360403 states and 510062 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:36:19,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:36:19,461 INFO L93 Difference]: Finished difference Result 617068 states and 876364 transitions. [2024-11-27 23:36:19,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:36:19,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2024-11-27 23:36:19,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:36:19,761 INFO L225 Difference]: With dead ends: 617068 [2024-11-27 23:36:19,762 INFO L226 Difference]: Without dead ends: 256710 [2024-11-27 23:36:19,862 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 [2024-11-27 23:36:19,864 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 69 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:36:19,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 338 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:36:20,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256710 states. [2024-11-27 23:36:22,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256710 to 256708. [2024-11-27 23:36:23,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256708 states, 256707 states have (on average 1.4174993280276735) internal successors, (363882), 256707 states have internal predecessors, (363882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:36:23,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256708 states to 256708 states and 363882 transitions. [2024-11-27 23:36:23,598 INFO L78 Accepts]: Start accepts. Automaton has 256708 states and 363882 transitions. Word has length 114 [2024-11-27 23:36:23,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:36:23,598 INFO L471 AbstractCegarLoop]: Abstraction has 256708 states and 363882 transitions. [2024-11-27 23:36:23,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:36:23,598 INFO L276 IsEmpty]: Start isEmpty. Operand 256708 states and 363882 transitions. [2024-11-27 23:36:23,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-27 23:36:23,616 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:36:23,616 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:36:23,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 23:36:23,616 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:36:23,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:36:23,617 INFO L85 PathProgramCache]: Analyzing trace with hash -354267051, now seen corresponding path program 1 times [2024-11-27 23:36:23,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:36:23,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235053864] [2024-11-27 23:36:23,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:36:23,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:36:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:36:24,453 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:36:24,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:36:24,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235053864] [2024-11-27 23:36:24,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235053864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:36:24,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249450] [2024-11-27 23:36:24,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:36:24,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:36:24,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dea9ce6-99f6-45a8-98f4-8481028321ed/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:36:24,456 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dea9ce6-99f6-45a8-98f4-8481028321ed/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:36:24,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dea9ce6-99f6-45a8-98f4-8481028321ed/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:36:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:36:24,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-27 23:36:24,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:36:27,597 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:36:27,597 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:36:30,595 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:36:30,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249450] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:36:30,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:36:30,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 16] total 35 [2024-11-27 23:36:30,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756901007] [2024-11-27 23:36:30,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:36:30,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-27 23:36:30,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:36:30,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-27 23:36:30,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=996, Unknown=0, NotChecked=0, Total=1190 [2024-11-27 23:36:30,597 INFO L87 Difference]: Start difference. First operand 256708 states and 363882 transitions. Second operand has 35 states, 35 states have (on average 7.885714285714286) internal successors, (276), 35 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)