./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.1.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_d903d872-8e61-4d37-ae89-f29ab99c1fe4/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d903d872-8e61-4d37-ae89-f29ab99c1fe4/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_d903d872-8e61-4d37-ae89-f29ab99c1fe4/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d903d872-8e61-4d37-ae89-f29ab99c1fe4/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d903d872-8e61-4d37-ae89-f29ab99c1fe4/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_d903d872-8e61-4d37-ae89-f29ab99c1fe4/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 3af6b76c8112c46f4f3f430659495baba58dab9f6300080b3889ede952fb5526 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:25:38,287 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:25:38,408 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d903d872-8e61-4d37-ae89-f29ab99c1fe4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:25:38,417 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:25:38,418 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:25:38,460 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:25:38,461 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:25:38,461 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:25:38,462 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:25:38,462 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:25:38,464 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:25:38,464 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:25:38,464 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:25:38,464 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:25:38,465 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:25:38,465 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:25:38,466 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:25:38,466 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:25:38,466 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:25:38,466 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:25:38,466 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:25:38,466 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:25:38,467 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:25:38,467 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:25:38,467 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:25:38,467 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:25:38,467 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:25:38,467 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:25:38,468 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:25:38,468 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:25:38,468 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:25:38,468 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:25:38,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:25:38,468 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:25:38,468 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:25:38,469 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:25:38,469 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:25:38,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:25:38,469 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:25:38,469 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:25:38,469 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:25:38,470 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:25:38,471 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:25:38,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:25:38,471 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:25:38,472 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:25:38,472 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:25:38,472 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:25:38,472 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_d903d872-8e61-4d37-ae89-f29ab99c1fe4/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 -> 3af6b76c8112c46f4f3f430659495baba58dab9f6300080b3889ede952fb5526 [2024-11-27 23:25:38,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:25:38,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:25:38,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:25:38,892 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:25:38,892 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:25:38,894 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d903d872-8e61-4d37-ae89-f29ab99c1fe4/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-27 23:25:42,677 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d903d872-8e61-4d37-ae89-f29ab99c1fe4/bin/uautomizer-verify-aQ6SnzHsRB/data/20ae9bf86/f0e80bf487974b8995514bda46dba853/FLAG6d526be08 [2024-11-27 23:25:43,091 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:25:43,092 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d903d872-8e61-4d37-ae89-f29ab99c1fe4/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-27 23:25:43,106 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d903d872-8e61-4d37-ae89-f29ab99c1fe4/bin/uautomizer-verify-aQ6SnzHsRB/data/20ae9bf86/f0e80bf487974b8995514bda46dba853/FLAG6d526be08 [2024-11-27 23:25:43,126 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d903d872-8e61-4d37-ae89-f29ab99c1fe4/bin/uautomizer-verify-aQ6SnzHsRB/data/20ae9bf86/f0e80bf487974b8995514bda46dba853 [2024-11-27 23:25:43,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:25:43,134 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:25:43,138 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:25:43,138 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:25:43,147 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:25:43,148 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:25:43" (1/1) ... [2024-11-27 23:25:43,149 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@343e97c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:43, skipping insertion in model container [2024-11-27 23:25:43,149 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:25:43" (1/1) ... [2024-11-27 23:25:43,215 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:25:43,602 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_d903d872-8e61-4d37-ae89-f29ab99c1fe4/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7752,7765] [2024-11-27 23:25:43,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:25:43,716 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:25:43,820 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_d903d872-8e61-4d37-ae89-f29ab99c1fe4/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7752,7765] [2024-11-27 23:25:43,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:25:43,875 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:25:43,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:43 WrapperNode [2024-11-27 23:25:43,876 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:25:43,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:25:43,878 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:25:43,878 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:25:43,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:43" (1/1) ... [2024-11-27 23:25:43,917 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:43" (1/1) ... [2024-11-27 23:25:43,997 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 670 [2024-11-27 23:25:43,998 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:25:44,002 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:25:44,002 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:25:44,002 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:25:44,019 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:43" (1/1) ... [2024-11-27 23:25:44,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:43" (1/1) ... [2024-11-27 23:25:44,028 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:43" (1/1) ... [2024-11-27 23:25:44,057 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 23:25:44,057 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:43" (1/1) ... [2024-11-27 23:25:44,058 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:43" (1/1) ... [2024-11-27 23:25:44,070 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:43" (1/1) ... [2024-11-27 23:25:44,072 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:43" (1/1) ... [2024-11-27 23:25:44,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:43" (1/1) ... [2024-11-27 23:25:44,087 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:43" (1/1) ... [2024-11-27 23:25:44,090 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:43" (1/1) ... [2024-11-27 23:25:44,103 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:25:44,107 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:25:44,107 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:25:44,108 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:25:44,109 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:43" (1/1) ... [2024-11-27 23:25:44,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:25:44,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d903d872-8e61-4d37-ae89-f29ab99c1fe4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:44,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d903d872-8e61-4d37-ae89-f29ab99c1fe4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:25:44,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d903d872-8e61-4d37-ae89-f29ab99c1fe4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:25:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:25:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:25:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:25:44,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:25:44,418 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:25:44,421 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:25:45,472 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-11-27 23:25:45,472 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:25:45,526 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:25:45,526 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-27 23:25:45,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:25:45 BoogieIcfgContainer [2024-11-27 23:25:45,527 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:25:45,530 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:25:45,530 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:25:45,536 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:25:45,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:25:43" (1/3) ... [2024-11-27 23:25:45,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b35819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:25:45, skipping insertion in model container [2024-11-27 23:25:45,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:43" (2/3) ... [2024-11-27 23:25:45,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b35819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:25:45, skipping insertion in model container [2024-11-27 23:25:45,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:25:45" (3/3) ... [2024-11-27 23:25:45,539 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-27 23:25:45,560 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:25:45,562 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c that has 1 procedures, 149 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-27 23:25:45,657 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:25:45,675 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;@40ea47fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:25:45,675 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:25:45,683 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.7346938775510203) internal successors, (255), 148 states have internal predecessors, (255), 0 states have call successors, (0), 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 23:25:45,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-27 23:25:45,695 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:45,695 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:45,696 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:45,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:45,704 INFO L85 PathProgramCache]: Analyzing trace with hash -970283638, now seen corresponding path program 1 times [2024-11-27 23:25:45,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:45,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479392377] [2024-11-27 23:25:45,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:45,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:46,571 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 23:25:46,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:46,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479392377] [2024-11-27 23:25:46,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479392377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:46,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:46,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:25:46,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612474858] [2024-11-27 23:25:46,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:46,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:25:46,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:46,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:25:46,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:25:46,617 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.7346938775510203) internal successors, (255), 148 states have internal predecessors, (255), 0 states have call successors, (0), 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 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:46,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:46,773 INFO L93 Difference]: Finished difference Result 335 states and 559 transitions. [2024-11-27 23:25:46,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:25:46,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-27 23:25:46,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:46,788 INFO L225 Difference]: With dead ends: 335 [2024-11-27 23:25:46,788 INFO L226 Difference]: Without dead ends: 231 [2024-11-27 23:25:46,792 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 23:25:46,796 INFO L435 NwaCegarLoop]: 249 mSDtfsCounter, 151 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:46,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 448 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:46,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-27 23:25:46,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2024-11-27 23:25:46,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.5814977973568283) internal successors, (359), 227 states have internal predecessors, (359), 0 states have call successors, (0), 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 23:25:46,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 359 transitions. [2024-11-27 23:25:46,883 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 359 transitions. Word has length 56 [2024-11-27 23:25:46,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:46,883 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 359 transitions. [2024-11-27 23:25:46,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:46,884 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 359 transitions. [2024-11-27 23:25:46,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-27 23:25:46,886 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:46,893 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] [2024-11-27 23:25:46,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:25:46,894 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:46,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:46,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1615417163, now seen corresponding path program 1 times [2024-11-27 23:25:46,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:46,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425049753] [2024-11-27 23:25:46,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:46,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:47,259 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 23:25:47,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:47,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425049753] [2024-11-27 23:25:47,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425049753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:47,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:47,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:25:47,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221580209] [2024-11-27 23:25:47,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:47,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:25:47,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:47,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:25:47,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:25:47,267 INFO L87 Difference]: Start difference. First operand 228 states and 359 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:47,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:47,381 INFO L93 Difference]: Finished difference Result 566 states and 911 transitions. [2024-11-27 23:25:47,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:25:47,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-27 23:25:47,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:47,386 INFO L225 Difference]: With dead ends: 566 [2024-11-27 23:25:47,387 INFO L226 Difference]: Without dead ends: 389 [2024-11-27 23:25:47,388 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 23:25:47,389 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 133 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:47,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 424 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:47,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-11-27 23:25:47,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 385. [2024-11-27 23:25:47,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.5989583333333333) internal successors, (614), 384 states have internal predecessors, (614), 0 states have call successors, (0), 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 23:25:47,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 614 transitions. [2024-11-27 23:25:47,423 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 614 transitions. Word has length 58 [2024-11-27 23:25:47,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:47,423 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 614 transitions. [2024-11-27 23:25:47,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:47,424 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 614 transitions. [2024-11-27 23:25:47,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-27 23:25:47,426 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:47,426 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] [2024-11-27 23:25:47,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:25:47,427 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:47,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:47,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1881805132, now seen corresponding path program 1 times [2024-11-27 23:25:47,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:47,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29414985] [2024-11-27 23:25:47,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:47,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:47,645 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 23:25:47,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:47,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29414985] [2024-11-27 23:25:47,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29414985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:47,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:47,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:25:47,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614651717] [2024-11-27 23:25:47,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:47,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:25:47,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:47,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:25:47,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:25:47,647 INFO L87 Difference]: Start difference. First operand 385 states and 614 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 23:25:47,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:47,773 INFO L93 Difference]: Finished difference Result 1021 states and 1648 transitions. [2024-11-27 23:25:47,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:25:47,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2024-11-27 23:25:47,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:47,781 INFO L225 Difference]: With dead ends: 1021 [2024-11-27 23:25:47,783 INFO L226 Difference]: Without dead ends: 687 [2024-11-27 23:25:47,785 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 23:25:47,789 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 127 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:47,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 425 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:47,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2024-11-27 23:25:47,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 681. [2024-11-27 23:25:47,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 680 states have (on average 1.6029411764705883) internal successors, (1090), 680 states have internal predecessors, (1090), 0 states have call successors, (0), 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 23:25:47,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1090 transitions. [2024-11-27 23:25:47,856 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1090 transitions. Word has length 60 [2024-11-27 23:25:47,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:47,858 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 1090 transitions. [2024-11-27 23:25:47,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 23:25:47,859 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1090 transitions. [2024-11-27 23:25:47,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-27 23:25:47,865 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:47,868 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] [2024-11-27 23:25:47,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:25:47,869 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:47,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:47,870 INFO L85 PathProgramCache]: Analyzing trace with hash 333047117, now seen corresponding path program 1 times [2024-11-27 23:25:47,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:47,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905578554] [2024-11-27 23:25:47,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:47,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:48,234 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 23:25:48,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:48,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905578554] [2024-11-27 23:25:48,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905578554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:48,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:48,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:25:48,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472236191] [2024-11-27 23:25:48,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:48,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:25:48,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:48,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:25:48,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:25:48,240 INFO L87 Difference]: Start difference. First operand 681 states and 1090 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 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 23:25:48,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:48,596 INFO L93 Difference]: Finished difference Result 2973 states and 4848 transitions. [2024-11-27 23:25:48,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:25:48,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-27 23:25:48,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:48,611 INFO L225 Difference]: With dead ends: 2973 [2024-11-27 23:25:48,611 INFO L226 Difference]: Without dead ends: 2343 [2024-11-27 23:25:48,613 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:25:48,615 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 1026 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:48,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 1572 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:25:48,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2343 states. [2024-11-27 23:25:48,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2343 to 1233. [2024-11-27 23:25:48,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 1232 states have (on average 1.6112012987012987) internal successors, (1985), 1232 states have internal predecessors, (1985), 0 states have call successors, (0), 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 23:25:48,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1985 transitions. [2024-11-27 23:25:48,714 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1985 transitions. Word has length 62 [2024-11-27 23:25:48,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:48,715 INFO L471 AbstractCegarLoop]: Abstraction has 1233 states and 1985 transitions. [2024-11-27 23:25:48,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 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 23:25:48,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1985 transitions. [2024-11-27 23:25:48,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-27 23:25:48,718 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:48,718 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] [2024-11-27 23:25:48,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:25:48,719 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:48,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:48,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1672021844, now seen corresponding path program 1 times [2024-11-27 23:25:48,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:48,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733712558] [2024-11-27 23:25:48,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:48,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:49,058 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 23:25:49,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:49,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733712558] [2024-11-27 23:25:49,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733712558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:49,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:49,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:25:49,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941330483] [2024-11-27 23:25:49,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:49,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:25:49,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:49,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:25:49,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:25:49,061 INFO L87 Difference]: Start difference. First operand 1233 states and 1985 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 23:25:49,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:49,239 INFO L93 Difference]: Finished difference Result 3613 states and 5881 transitions. [2024-11-27 23:25:49,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:25:49,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-27 23:25:49,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:49,254 INFO L225 Difference]: With dead ends: 3613 [2024-11-27 23:25:49,255 INFO L226 Difference]: Without dead ends: 2431 [2024-11-27 23:25:49,259 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:25:49,263 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 456 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:49,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 769 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:49,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2024-11-27 23:25:49,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1823. [2024-11-27 23:25:49,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1823 states, 1822 states have (on average 1.6169045005488474) internal successors, (2946), 1822 states have internal predecessors, (2946), 0 states have call successors, (0), 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 23:25:49,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 2946 transitions. [2024-11-27 23:25:49,376 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 2946 transitions. Word has length 63 [2024-11-27 23:25:49,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:49,377 INFO L471 AbstractCegarLoop]: Abstraction has 1823 states and 2946 transitions. [2024-11-27 23:25:49,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 23:25:49,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 2946 transitions. [2024-11-27 23:25:49,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-27 23:25:49,380 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:49,380 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] [2024-11-27 23:25:49,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:25:49,381 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:49,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:49,383 INFO L85 PathProgramCache]: Analyzing trace with hash 235123444, now seen corresponding path program 1 times [2024-11-27 23:25:49,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:49,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108172304] [2024-11-27 23:25:49,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:49,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:49,629 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 23:25:49,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:49,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108172304] [2024-11-27 23:25:49,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108172304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:49,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:49,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:25:49,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175476339] [2024-11-27 23:25:49,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:49,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:25:49,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:49,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:25:49,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:25:49,633 INFO L87 Difference]: Start difference. First operand 1823 states and 2946 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 23:25:49,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:49,809 INFO L93 Difference]: Finished difference Result 5307 states and 8625 transitions. [2024-11-27 23:25:49,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:25:49,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2024-11-27 23:25:49,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:49,876 INFO L225 Difference]: With dead ends: 5307 [2024-11-27 23:25:49,877 INFO L226 Difference]: Without dead ends: 3535 [2024-11-27 23:25:49,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:25:49,884 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 456 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:49,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 711 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:49,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2024-11-27 23:25:49,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 2667. [2024-11-27 23:25:49,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 2666 states have (on average 1.6151537884471119) internal successors, (4306), 2666 states have internal predecessors, (4306), 0 states have call successors, (0), 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 23:25:49,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 4306 transitions. [2024-11-27 23:25:49,987 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 4306 transitions. Word has length 64 [2024-11-27 23:25:49,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:49,987 INFO L471 AbstractCegarLoop]: Abstraction has 2667 states and 4306 transitions. [2024-11-27 23:25:49,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 23:25:49,988 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 4306 transitions. [2024-11-27 23:25:49,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-27 23:25:49,994 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:49,994 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] [2024-11-27 23:25:49,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:25:49,995 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:49,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:49,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1354495973, now seen corresponding path program 1 times [2024-11-27 23:25:49,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:49,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064744777] [2024-11-27 23:25:49,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:49,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:50,183 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 23:25:50,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:50,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064744777] [2024-11-27 23:25:50,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064744777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:50,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:50,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:25:50,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213637700] [2024-11-27 23:25:50,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:50,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:25:50,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:50,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:25:50,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:25:50,185 INFO L87 Difference]: Start difference. First operand 2667 states and 4306 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 23:25:50,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:50,358 INFO L93 Difference]: Finished difference Result 7707 states and 12501 transitions. [2024-11-27 23:25:50,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:25:50,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2024-11-27 23:25:50,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:50,381 INFO L225 Difference]: With dead ends: 7707 [2024-11-27 23:25:50,382 INFO L226 Difference]: Without dead ends: 5091 [2024-11-27 23:25:50,386 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:25:50,387 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 454 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:50,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 754 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:50,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5091 states. [2024-11-27 23:25:50,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5091 to 3863. [2024-11-27 23:25:50,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3863 states, 3862 states have (on average 1.6126359399274988) internal successors, (6228), 3862 states have internal predecessors, (6228), 0 states have call successors, (0), 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 23:25:50,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3863 states to 3863 states and 6228 transitions. [2024-11-27 23:25:50,546 INFO L78 Accepts]: Start accepts. Automaton has 3863 states and 6228 transitions. Word has length 65 [2024-11-27 23:25:50,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:50,546 INFO L471 AbstractCegarLoop]: Abstraction has 3863 states and 6228 transitions. [2024-11-27 23:25:50,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 23:25:50,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states and 6228 transitions. [2024-11-27 23:25:50,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-27 23:25:50,551 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:50,551 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] [2024-11-27 23:25:50,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:25:50,552 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:50,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:50,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1658042238, now seen corresponding path program 1 times [2024-11-27 23:25:50,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:50,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499421512] [2024-11-27 23:25:50,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:50,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:50,691 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 23:25:50,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:50,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499421512] [2024-11-27 23:25:50,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499421512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:50,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:50,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:25:50,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438221560] [2024-11-27 23:25:50,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:50,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:25:50,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:50,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:25:50,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:25:50,693 INFO L87 Difference]: Start difference. First operand 3863 states and 6228 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 23:25:50,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:50,796 INFO L93 Difference]: Finished difference Result 8640 states and 14034 transitions. [2024-11-27 23:25:50,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:25:50,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2024-11-27 23:25:50,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:50,824 INFO L225 Difference]: With dead ends: 8640 [2024-11-27 23:25:50,824 INFO L226 Difference]: Without dead ends: 5875 [2024-11-27 23:25:50,829 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 23:25:50,830 INFO L435 NwaCegarLoop]: 332 mSDtfsCounter, 138 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 524 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 23:25:50,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 524 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:50,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5875 states. [2024-11-27 23:25:51,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5875 to 5873. [2024-11-27 23:25:51,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5873 states, 5872 states have (on average 1.6130790190735695) internal successors, (9472), 5872 states have internal predecessors, (9472), 0 states have call successors, (0), 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 23:25:51,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5873 states to 5873 states and 9472 transitions. [2024-11-27 23:25:51,117 INFO L78 Accepts]: Start accepts. Automaton has 5873 states and 9472 transitions. Word has length 66 [2024-11-27 23:25:51,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:51,117 INFO L471 AbstractCegarLoop]: Abstraction has 5873 states and 9472 transitions. [2024-11-27 23:25:51,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 23:25:51,118 INFO L276 IsEmpty]: Start isEmpty. Operand 5873 states and 9472 transitions. [2024-11-27 23:25:51,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-27 23:25:51,119 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:51,120 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] [2024-11-27 23:25:51,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:25:51,120 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:51,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:51,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1876407130, now seen corresponding path program 1 times [2024-11-27 23:25:51,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:51,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616423310] [2024-11-27 23:25:51,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:51,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:51,253 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 23:25:51,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:51,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616423310] [2024-11-27 23:25:51,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616423310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:51,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:51,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:25:51,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935586296] [2024-11-27 23:25:51,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:51,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:25:51,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:51,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:25:51,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:25:51,259 INFO L87 Difference]: Start difference. First operand 5873 states and 9472 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 23:25:51,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:51,387 INFO L93 Difference]: Finished difference Result 12987 states and 20989 transitions. [2024-11-27 23:25:51,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:25:51,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2024-11-27 23:25:51,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:51,448 INFO L225 Difference]: With dead ends: 12987 [2024-11-27 23:25:51,448 INFO L226 Difference]: Without dead ends: 8817 [2024-11-27 23:25:51,455 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 23:25:51,455 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 126 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 469 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 23:25:51,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 469 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:51,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8817 states. [2024-11-27 23:25:51,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8817 to 8815. [2024-11-27 23:25:51,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8815 states, 8814 states have (on average 1.6056274109371456) internal successors, (14152), 8814 states have internal predecessors, (14152), 0 states have call successors, (0), 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 23:25:51,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8815 states to 8815 states and 14152 transitions. [2024-11-27 23:25:51,731 INFO L78 Accepts]: Start accepts. Automaton has 8815 states and 14152 transitions. Word has length 66 [2024-11-27 23:25:51,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:51,731 INFO L471 AbstractCegarLoop]: Abstraction has 8815 states and 14152 transitions. [2024-11-27 23:25:51,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 23:25:51,732 INFO L276 IsEmpty]: Start isEmpty. Operand 8815 states and 14152 transitions. [2024-11-27 23:25:51,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-27 23:25:51,733 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:51,733 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] [2024-11-27 23:25:51,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:25:51,734 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:51,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:51,736 INFO L85 PathProgramCache]: Analyzing trace with hash -430026452, now seen corresponding path program 1 times [2024-11-27 23:25:51,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:51,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016728897] [2024-11-27 23:25:51,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:51,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:51,855 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 23:25:51,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:51,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016728897] [2024-11-27 23:25:51,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016728897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:51,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:51,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:25:51,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103672624] [2024-11-27 23:25:51,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:51,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:25:51,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:51,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:25:51,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:25:51,857 INFO L87 Difference]: Start difference. First operand 8815 states and 14152 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 23:25:51,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:51,963 INFO L93 Difference]: Finished difference Result 19164 states and 30838 transitions. [2024-11-27 23:25:51,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:25:51,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2024-11-27 23:25:51,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:52,015 INFO L225 Difference]: With dead ends: 19164 [2024-11-27 23:25:52,015 INFO L226 Difference]: Without dead ends: 12900 [2024-11-27 23:25:52,080 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 23:25:52,082 INFO L435 NwaCegarLoop]: 316 mSDtfsCounter, 132 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 509 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 23:25:52,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 509 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:52,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12900 states. [2024-11-27 23:25:52,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12900 to 12898. [2024-11-27 23:25:52,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12898 states, 12897 states have (on average 1.5971931456927968) internal successors, (20599), 12897 states have internal predecessors, (20599), 0 states have call successors, (0), 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 23:25:52,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12898 states to 12898 states and 20599 transitions. [2024-11-27 23:25:52,406 INFO L78 Accepts]: Start accepts. Automaton has 12898 states and 20599 transitions. Word has length 66 [2024-11-27 23:25:52,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:52,406 INFO L471 AbstractCegarLoop]: Abstraction has 12898 states and 20599 transitions. [2024-11-27 23:25:52,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 23:25:52,408 INFO L276 IsEmpty]: Start isEmpty. Operand 12898 states and 20599 transitions. [2024-11-27 23:25:52,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-27 23:25:52,409 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:52,409 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] [2024-11-27 23:25:52,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 23:25:52,409 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:52,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:52,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1812850740, now seen corresponding path program 1 times [2024-11-27 23:25:52,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:52,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56599360] [2024-11-27 23:25:52,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:52,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:52,743 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 23:25:52,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:52,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56599360] [2024-11-27 23:25:52,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56599360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:52,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:52,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:25:52,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314844687] [2024-11-27 23:25:52,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:52,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:25:52,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:52,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:25:52,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:25:52,745 INFO L87 Difference]: Start difference. First operand 12898 states and 20599 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 23:25:53,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:53,078 INFO L93 Difference]: Finished difference Result 25713 states and 41080 transitions. [2024-11-27 23:25:53,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:25:53,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2024-11-27 23:25:53,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:53,120 INFO L225 Difference]: With dead ends: 25713 [2024-11-27 23:25:53,121 INFO L226 Difference]: Without dead ends: 12900 [2024-11-27 23:25:53,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:25:53,137 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 385 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:53,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 617 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:53,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12900 states. [2024-11-27 23:25:53,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12900 to 12898. [2024-11-27 23:25:53,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12898 states, 12897 states have (on average 1.5875009692176476) internal successors, (20474), 12897 states have internal predecessors, (20474), 0 states have call successors, (0), 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 23:25:53,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12898 states to 12898 states and 20474 transitions. [2024-11-27 23:25:53,517 INFO L78 Accepts]: Start accepts. Automaton has 12898 states and 20474 transitions. Word has length 67 [2024-11-27 23:25:53,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:53,517 INFO L471 AbstractCegarLoop]: Abstraction has 12898 states and 20474 transitions. [2024-11-27 23:25:53,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 23:25:53,517 INFO L276 IsEmpty]: Start isEmpty. Operand 12898 states and 20474 transitions. [2024-11-27 23:25:53,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-27 23:25:53,519 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:53,519 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] [2024-11-27 23:25:53,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 23:25:53,519 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:53,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:53,520 INFO L85 PathProgramCache]: Analyzing trace with hash 528800646, now seen corresponding path program 1 times [2024-11-27 23:25:53,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:53,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99089169] [2024-11-27 23:25:53,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:53,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:53,984 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 23:25:53,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:53,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99089169] [2024-11-27 23:25:53,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99089169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:53,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:53,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:25:53,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43569408] [2024-11-27 23:25:53,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:53,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:25:53,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:53,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:25:53,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:25:53,991 INFO L87 Difference]: Start difference. First operand 12898 states and 20474 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 23:25:54,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:54,284 INFO L93 Difference]: Finished difference Result 36933 states and 58774 transitions. [2024-11-27 23:25:54,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:25:54,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2024-11-27 23:25:54,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:54,353 INFO L225 Difference]: With dead ends: 36933 [2024-11-27 23:25:54,354 INFO L226 Difference]: Without dead ends: 24120 [2024-11-27 23:25:54,370 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:25:54,371 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 253 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:54,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 623 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:54,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24120 states. [2024-11-27 23:25:54,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24120 to 24118. [2024-11-27 23:25:54,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24118 states, 24117 states have (on average 1.5768545009744164) internal successors, (38029), 24117 states have internal predecessors, (38029), 0 states have call successors, (0), 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 23:25:54,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24118 states to 24118 states and 38029 transitions. [2024-11-27 23:25:54,915 INFO L78 Accepts]: Start accepts. Automaton has 24118 states and 38029 transitions. Word has length 70 [2024-11-27 23:25:54,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:54,916 INFO L471 AbstractCegarLoop]: Abstraction has 24118 states and 38029 transitions. [2024-11-27 23:25:54,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 23:25:54,917 INFO L276 IsEmpty]: Start isEmpty. Operand 24118 states and 38029 transitions. [2024-11-27 23:25:54,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-27 23:25:54,918 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:54,918 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] [2024-11-27 23:25:54,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 23:25:54,918 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:54,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:54,919 INFO L85 PathProgramCache]: Analyzing trace with hash -788958455, now seen corresponding path program 1 times [2024-11-27 23:25:54,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:54,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980685944] [2024-11-27 23:25:54,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:54,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:55,619 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 23:25:55,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:55,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980685944] [2024-11-27 23:25:55,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980685944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:55,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:55,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:25:55,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639100359] [2024-11-27 23:25:55,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:55,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:25:55,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:55,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:25:55,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:25:55,621 INFO L87 Difference]: Start difference. First operand 24118 states and 38029 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 23:25:55,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:55,757 INFO L93 Difference]: Finished difference Result 24844 states and 39116 transitions. [2024-11-27 23:25:55,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:25:55,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2024-11-27 23:25:55,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:55,818 INFO L225 Difference]: With dead ends: 24844 [2024-11-27 23:25:55,818 INFO L226 Difference]: Without dead ends: 24842 [2024-11-27 23:25:55,827 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 23:25:55,828 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 0 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:55,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 880 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:55,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24842 states. [2024-11-27 23:25:56,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24842 to 24842. [2024-11-27 23:25:56,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24842 states, 24841 states have (on average 1.5596795620144117) internal successors, (38744), 24841 states have internal predecessors, (38744), 0 states have call successors, (0), 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 23:25:56,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24842 states to 24842 states and 38744 transitions. [2024-11-27 23:25:56,299 INFO L78 Accepts]: Start accepts. Automaton has 24842 states and 38744 transitions. Word has length 71 [2024-11-27 23:25:56,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:56,300 INFO L471 AbstractCegarLoop]: Abstraction has 24842 states and 38744 transitions. [2024-11-27 23:25:56,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 23:25:56,300 INFO L276 IsEmpty]: Start isEmpty. Operand 24842 states and 38744 transitions. [2024-11-27 23:25:56,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-27 23:25:56,303 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:56,303 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:56,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 23:25:56,304 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:56,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:56,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1288596918, now seen corresponding path program 1 times [2024-11-27 23:25:56,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:56,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830125509] [2024-11-27 23:25:56,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:56,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:56,611 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 23:25:56,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:56,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830125509] [2024-11-27 23:25:56,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830125509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:56,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:56,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:25:56,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468803771] [2024-11-27 23:25:56,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:56,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:25:56,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:56,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:25:56,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:25:56,614 INFO L87 Difference]: Start difference. First operand 24842 states and 38744 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 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 23:25:57,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:57,097 INFO L93 Difference]: Finished difference Result 60730 states and 95066 transitions. [2024-11-27 23:25:57,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:25:57,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 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 97 [2024-11-27 23:25:57,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:57,242 INFO L225 Difference]: With dead ends: 60730 [2024-11-27 23:25:57,242 INFO L226 Difference]: Without dead ends: 48768 [2024-11-27 23:25:57,260 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:25:57,261 INFO L435 NwaCegarLoop]: 362 mSDtfsCounter, 575 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:57,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1025 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:57,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48768 states. [2024-11-27 23:25:58,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48768 to 38122. [2024-11-27 23:25:58,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38122 states, 38121 states have (on average 1.5579864116890954) internal successors, (59392), 38121 states have internal predecessors, (59392), 0 states have call successors, (0), 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 23:25:58,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38122 states to 38122 states and 59392 transitions. [2024-11-27 23:25:58,326 INFO L78 Accepts]: Start accepts. Automaton has 38122 states and 59392 transitions. Word has length 97 [2024-11-27 23:25:58,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:58,327 INFO L471 AbstractCegarLoop]: Abstraction has 38122 states and 59392 transitions. [2024-11-27 23:25:58,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 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 23:25:58,327 INFO L276 IsEmpty]: Start isEmpty. Operand 38122 states and 59392 transitions. [2024-11-27 23:25:58,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-27 23:25:58,329 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:58,330 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:58,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 23:25:58,330 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:58,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:58,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1070232026, now seen corresponding path program 1 times [2024-11-27 23:25:58,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:58,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051808875] [2024-11-27 23:25:58,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:58,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:58,596 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-27 23:25:58,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:58,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051808875] [2024-11-27 23:25:58,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051808875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:58,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:58,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:25:58,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951549981] [2024-11-27 23:25:58,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:58,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:25:58,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:58,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:25:58,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:25:58,599 INFO L87 Difference]: Start difference. First operand 38122 states and 59392 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 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 23:25:59,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:59,103 INFO L93 Difference]: Finished difference Result 68116 states and 106638 transitions. [2024-11-27 23:25:59,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:25:59,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 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 97 [2024-11-27 23:25:59,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:59,214 INFO L225 Difference]: With dead ends: 68116 [2024-11-27 23:25:59,214 INFO L226 Difference]: Without dead ends: 56384 [2024-11-27 23:25:59,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:25:59,242 INFO L435 NwaCegarLoop]: 374 mSDtfsCounter, 584 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:59,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1090 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:59,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56384 states. [2024-11-27 23:26:00,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56384 to 51626. [2024-11-27 23:26:00,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51626 states, 51625 states have (on average 1.5596707021791767) internal successors, (80518), 51625 states have internal predecessors, (80518), 0 states have call successors, (0), 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 23:26:00,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51626 states to 51626 states and 80518 transitions. [2024-11-27 23:26:00,531 INFO L78 Accepts]: Start accepts. Automaton has 51626 states and 80518 transitions. Word has length 97 [2024-11-27 23:26:00,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:00,531 INFO L471 AbstractCegarLoop]: Abstraction has 51626 states and 80518 transitions. [2024-11-27 23:26:00,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 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 23:26:00,532 INFO L276 IsEmpty]: Start isEmpty. Operand 51626 states and 80518 transitions. [2024-11-27 23:26:00,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-27 23:26:00,534 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:00,534 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:00,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 23:26:00,535 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:00,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:00,535 INFO L85 PathProgramCache]: Analyzing trace with hash 918301688, now seen corresponding path program 1 times [2024-11-27 23:26:00,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:00,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421718756] [2024-11-27 23:26:00,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:00,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 23:26:00,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:00,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421718756] [2024-11-27 23:26:00,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421718756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:00,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:00,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:26:00,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640316689] [2024-11-27 23:26:00,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:00,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:26:00,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:00,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:26:00,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:26:00,934 INFO L87 Difference]: Start difference. First operand 51626 states and 80518 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 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 23:26:01,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:01,441 INFO L93 Difference]: Finished difference Result 72776 states and 113938 transitions. [2024-11-27 23:26:01,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:26:01,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 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 97 [2024-11-27 23:26:01,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:01,549 INFO L225 Difference]: With dead ends: 72776 [2024-11-27 23:26:01,549 INFO L226 Difference]: Without dead ends: 61044 [2024-11-27 23:26:01,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:26:01,566 INFO L435 NwaCegarLoop]: 376 mSDtfsCounter, 583 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:01,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1063 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:26:01,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61044 states. [2024-11-27 23:26:02,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61044 to 59150. [2024-11-27 23:26:02,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59150 states, 59149 states have (on average 1.5613788905983195) internal successors, (92354), 59149 states have internal predecessors, (92354), 0 states have call successors, (0), 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 23:26:02,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59150 states to 59150 states and 92354 transitions. [2024-11-27 23:26:02,912 INFO L78 Accepts]: Start accepts. Automaton has 59150 states and 92354 transitions. Word has length 97 [2024-11-27 23:26:02,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:02,912 INFO L471 AbstractCegarLoop]: Abstraction has 59150 states and 92354 transitions. [2024-11-27 23:26:02,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 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 23:26:02,913 INFO L276 IsEmpty]: Start isEmpty. Operand 59150 states and 92354 transitions. [2024-11-27 23:26:02,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-27 23:26:02,915 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:02,915 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:02,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 23:26:02,916 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:02,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:02,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1354302985, now seen corresponding path program 1 times [2024-11-27 23:26:02,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:02,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872613552] [2024-11-27 23:26:02,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:02,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:03,104 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 23:26:03,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:03,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872613552] [2024-11-27 23:26:03,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872613552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:03,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:03,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:26:03,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546841032] [2024-11-27 23:26:03,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:03,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:26:03,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:03,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:26:03,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:03,108 INFO L87 Difference]: Start difference. First operand 59150 states and 92354 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 23:26:03,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:03,968 INFO L93 Difference]: Finished difference Result 96273 states and 151013 transitions. [2024-11-27 23:26:03,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:26:03,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 98 [2024-11-27 23:26:03,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:04,085 INFO L225 Difference]: With dead ends: 96273 [2024-11-27 23:26:04,086 INFO L226 Difference]: Without dead ends: 76695 [2024-11-27 23:26:04,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:04,103 INFO L435 NwaCegarLoop]: 364 mSDtfsCounter, 266 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:04,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 725 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:26:04,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76695 states. [2024-11-27 23:26:05,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76695 to 74803. [2024-11-27 23:26:05,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74803 states, 74802 states have (on average 1.5616962113312478) internal successors, (116818), 74802 states have internal predecessors, (116818), 0 states have call successors, (0), 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 23:26:05,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74803 states to 74803 states and 116818 transitions. [2024-11-27 23:26:05,501 INFO L78 Accepts]: Start accepts. Automaton has 74803 states and 116818 transitions. Word has length 98 [2024-11-27 23:26:05,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:05,502 INFO L471 AbstractCegarLoop]: Abstraction has 74803 states and 116818 transitions. [2024-11-27 23:26:05,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 23:26:05,502 INFO L276 IsEmpty]: Start isEmpty. Operand 74803 states and 116818 transitions. [2024-11-27 23:26:05,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-27 23:26:05,504 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:05,504 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:05,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 23:26:05,504 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:05,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:05,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1163404503, now seen corresponding path program 1 times [2024-11-27 23:26:05,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:05,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004981268] [2024-11-27 23:26:05,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:05,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:05,635 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 23:26:05,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:05,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004981268] [2024-11-27 23:26:05,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004981268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:05,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:05,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:26:05,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951952157] [2024-11-27 23:26:05,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:05,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:26:05,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:05,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:26:05,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:26:05,638 INFO L87 Difference]: Start difference. First operand 74803 states and 116818 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 23:26:06,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:06,683 INFO L93 Difference]: Finished difference Result 161245 states and 252601 transitions. [2024-11-27 23:26:06,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:26:06,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 98 [2024-11-27 23:26:06,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:06,956 INFO L225 Difference]: With dead ends: 161245 [2024-11-27 23:26:06,956 INFO L226 Difference]: Without dead ends: 126183 [2024-11-27 23:26:07,022 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 23:26:07,022 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 117 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:07,023 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 416 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:26:07,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126183 states. [2024-11-27 23:26:09,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126183 to 125905. [2024-11-27 23:26:09,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125905 states, 125904 states have (on average 1.5618089973313) internal successors, (196638), 125904 states have internal predecessors, (196638), 0 states have call successors, (0), 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 23:26:10,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125905 states to 125905 states and 196638 transitions. [2024-11-27 23:26:10,017 INFO L78 Accepts]: Start accepts. Automaton has 125905 states and 196638 transitions. Word has length 98 [2024-11-27 23:26:10,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:10,017 INFO L471 AbstractCegarLoop]: Abstraction has 125905 states and 196638 transitions. [2024-11-27 23:26:10,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 23:26:10,017 INFO L276 IsEmpty]: Start isEmpty. Operand 125905 states and 196638 transitions. [2024-11-27 23:26:10,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-27 23:26:10,020 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:10,020 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:10,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 23:26:10,021 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:10,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:10,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1010324438, now seen corresponding path program 1 times [2024-11-27 23:26:10,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:10,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584873334] [2024-11-27 23:26:10,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:10,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:10,145 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 23:26:10,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:10,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584873334] [2024-11-27 23:26:10,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584873334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:10,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:10,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:26:10,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496020401] [2024-11-27 23:26:10,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:10,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:26:10,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:10,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:26:10,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:26:10,147 INFO L87 Difference]: Start difference. First operand 125905 states and 196638 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:11,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:11,982 INFO L93 Difference]: Finished difference Result 370545 states and 578061 transitions. [2024-11-27 23:26:11,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:26:11,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-11-27 23:26:11,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:12,500 INFO L225 Difference]: With dead ends: 370545 [2024-11-27 23:26:12,500 INFO L226 Difference]: Without dead ends: 244725 [2024-11-27 23:26:12,631 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 23:26:12,632 INFO L435 NwaCegarLoop]: 324 mSDtfsCounter, 172 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:12,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 543 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:26:13,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244725 states. [2024-11-27 23:26:16,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244725 to 244723. [2024-11-27 23:26:16,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244723 states, 244722 states have (on average 1.550056799143518) internal successors, (379333), 244722 states have internal predecessors, (379333), 0 states have call successors, (0), 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 23:26:18,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244723 states to 244723 states and 379333 transitions. [2024-11-27 23:26:18,075 INFO L78 Accepts]: Start accepts. Automaton has 244723 states and 379333 transitions. Word has length 99 [2024-11-27 23:26:18,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:18,075 INFO L471 AbstractCegarLoop]: Abstraction has 244723 states and 379333 transitions. [2024-11-27 23:26:18,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:18,076 INFO L276 IsEmpty]: Start isEmpty. Operand 244723 states and 379333 transitions. [2024-11-27 23:26:18,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-27 23:26:18,080 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:18,080 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:18,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 23:26:18,081 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:18,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:18,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1491741236, now seen corresponding path program 1 times [2024-11-27 23:26:18,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:18,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119355690] [2024-11-27 23:26:18,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:18,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:18,224 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 23:26:18,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:18,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119355690] [2024-11-27 23:26:18,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119355690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:18,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:18,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:26:18,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476139857] [2024-11-27 23:26:18,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:18,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:26:18,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:18,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:26:18,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:26:18,227 INFO L87 Difference]: Start difference. First operand 244723 states and 379333 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:21,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:21,594 INFO L93 Difference]: Finished difference Result 719857 states and 1114335 transitions. [2024-11-27 23:26:21,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:26:21,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-11-27 23:26:21,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:23,605 INFO L225 Difference]: With dead ends: 719857 [2024-11-27 23:26:23,606 INFO L226 Difference]: Without dead ends: 475263 [2024-11-27 23:26:23,726 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 23:26:23,727 INFO L435 NwaCegarLoop]: 287 mSDtfsCounter, 153 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:23,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 506 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:26:24,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475263 states. [2024-11-27 23:26:30,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475263 to 475261. [2024-11-27 23:26:31,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475261 states, 475260 states have (on average 1.53759415898666) internal successors, (730757), 475260 states have internal predecessors, (730757), 0 states have call successors, (0), 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 23:26:33,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475261 states to 475261 states and 730757 transitions. [2024-11-27 23:26:33,577 INFO L78 Accepts]: Start accepts. Automaton has 475261 states and 730757 transitions. Word has length 99 [2024-11-27 23:26:33,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:33,577 INFO L471 AbstractCegarLoop]: Abstraction has 475261 states and 730757 transitions. [2024-11-27 23:26:33,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:26:33,577 INFO L276 IsEmpty]: Start isEmpty. Operand 475261 states and 730757 transitions. [2024-11-27 23:26:33,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-27 23:26:33,594 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:33,595 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:33,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 23:26:33,595 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:33,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:33,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1028124502, now seen corresponding path program 1 times [2024-11-27 23:26:33,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:33,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467900778] [2024-11-27 23:26:33,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:33,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:33,806 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 23:26:33,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:33,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467900778] [2024-11-27 23:26:33,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467900778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:33,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:33,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:26:33,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010345000] [2024-11-27 23:26:33,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:33,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:26:33,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:33,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:26:33,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:26:33,811 INFO L87 Difference]: Start difference. First operand 475261 states and 730757 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)