./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778941e1-d7bc-4958-b713-ec8e44971ee0/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778941e1-d7bc-4958-b713-ec8e44971ee0/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778941e1-d7bc-4958-b713-ec8e44971ee0/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778941e1-d7bc-4958-b713-ec8e44971ee0/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778941e1-d7bc-4958-b713-ec8e44971ee0/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778941e1-d7bc-4958-b713-ec8e44971ee0/bin/uautomizer-verify-jihMAELWvX --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 f43d028ba6ad7288ae454484b752e467a139fa9128b5cbd8640720a39b09e4f4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:12:53,414 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:12:53,513 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778941e1-d7bc-4958-b713-ec8e44971ee0/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 18:12:53,520 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:12:53,520 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:12:53,554 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:12:53,555 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:12:53,555 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:12:53,556 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:12:53,556 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:12:53,557 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:12:53,557 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:12:53,558 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:12:53,558 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:12:53,559 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:12:53,559 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:12:53,560 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:12:53,560 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:12:53,560 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:12:53,561 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:12:53,561 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:12:53,562 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:12:53,562 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:12:53,563 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:12:53,563 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:12:53,563 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:12:53,564 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:12:53,564 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:12:53,565 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:12:53,565 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:12:53,565 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:12:53,566 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:12:53,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:12:53,567 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:12:53,567 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:12:53,567 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:12:53,568 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:12:53,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:12:53,568 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:12:53,569 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:12:53,569 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:12:53,570 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:12:53,570 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778941e1-d7bc-4958-b713-ec8e44971ee0/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778941e1-d7bc-4958-b713-ec8e44971ee0/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f43d028ba6ad7288ae454484b752e467a139fa9128b5cbd8640720a39b09e4f4 [2024-11-08 18:12:53,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:12:53,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:12:53,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:12:53,877 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:12:53,877 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:12:53,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778941e1-d7bc-4958-b713-ec8e44971ee0/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c Unable to find full path for "g++" [2024-11-08 18:12:55,869 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:12:56,106 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:12:56,107 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778941e1-d7bc-4958-b713-ec8e44971ee0/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-11-08 18:12:56,123 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778941e1-d7bc-4958-b713-ec8e44971ee0/bin/uautomizer-verify-jihMAELWvX/data/cef5a115d/e577114cc07143b289c0f4d337b62ebc/FLAGad26697fc [2024-11-08 18:12:56,448 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778941e1-d7bc-4958-b713-ec8e44971ee0/bin/uautomizer-verify-jihMAELWvX/data/cef5a115d/e577114cc07143b289c0f4d337b62ebc [2024-11-08 18:12:56,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:12:56,454 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:12:56,456 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:12:56,457 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:12:56,462 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:12:56,463 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:12:56" (1/1) ... [2024-11-08 18:12:56,464 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@143680ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:12:56, skipping insertion in model container [2024-11-08 18:12:56,464 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:12:56" (1/1) ... [2024-11-08 18:12:56,529 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:12:56,931 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_778941e1-d7bc-4958-b713-ec8e44971ee0/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[14043,14056] [2024-11-08 18:12:57,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:12:57,033 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:12:57,150 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_778941e1-d7bc-4958-b713-ec8e44971ee0/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[14043,14056] [2024-11-08 18:12:57,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:12:57,241 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:12:57,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:12:57 WrapperNode [2024-11-08 18:12:57,242 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:12:57,243 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:12:57,244 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:12:57,244 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:12:57,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:12:57" (1/1) ... [2024-11-08 18:12:57,269 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:12:57" (1/1) ... [2024-11-08 18:12:57,373 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1216 [2024-11-08 18:12:57,374 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:12:57,374 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:12:57,375 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:12:57,375 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:12:57,387 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:12:57" (1/1) ... [2024-11-08 18:12:57,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:12:57" (1/1) ... [2024-11-08 18:12:57,399 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:12:57" (1/1) ... [2024-11-08 18:12:57,433 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]. [2024-11-08 18:12:57,434 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:12:57" (1/1) ... [2024-11-08 18:12:57,434 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:12:57" (1/1) ... [2024-11-08 18:12:57,465 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:12:57" (1/1) ... [2024-11-08 18:12:57,475 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:12:57" (1/1) ... [2024-11-08 18:12:57,491 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:12:57" (1/1) ... [2024-11-08 18:12:57,495 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:12:57" (1/1) ... [2024-11-08 18:12:57,516 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:12:57,517 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:12:57,517 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:12:57,517 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:12:57,518 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:12:57" (1/1) ... [2024-11-08 18:12:57,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:12:57,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778941e1-d7bc-4958-b713-ec8e44971ee0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:12:57,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778941e1-d7bc-4958-b713-ec8e44971ee0/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:12:57,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778941e1-d7bc-4958-b713-ec8e44971ee0/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:12:57,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:12:57,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:12:57,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:12:57,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:12:57,783 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:12:57,786 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:12:59,101 INFO L? ?]: Removed 73 outVars from TransFormulas that were not future-live. [2024-11-08 18:12:59,101 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:12:59,134 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:12:59,134 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:12:59,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:12:59 BoogieIcfgContainer [2024-11-08 18:12:59,135 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:12:59,140 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:12:59,140 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:12:59,144 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:12:59,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:12:56" (1/3) ... [2024-11-08 18:12:59,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5625eaeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:12:59, skipping insertion in model container [2024-11-08 18:12:59,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:12:57" (2/3) ... [2024-11-08 18:12:59,146 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5625eaeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:12:59, skipping insertion in model container [2024-11-08 18:12:59,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:12:59" (3/3) ... [2024-11-08 18:12:59,147 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-11-08 18:12:59,168 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:12:59,168 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 18:12:59,243 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:12:59,253 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;@5f6230e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:12:59,254 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 18:12:59,262 INFO L276 IsEmpty]: Start isEmpty. Operand has 301 states, 299 states have (on average 1.7892976588628762) internal successors, (535), 300 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:12:59,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-08 18:12:59,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:12:59,288 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:12:59,289 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:12:59,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:12:59,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1732515754, now seen corresponding path program 1 times [2024-11-08 18:12:59,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:12:59,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021882843] [2024-11-08 18:12:59,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:12:59,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:12:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:13:00,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:13:00,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021882843] [2024-11-08 18:13:00,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021882843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:13:00,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:13:00,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:13:00,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089500430] [2024-11-08 18:13:00,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:13:00,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:13:00,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:13:00,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:13:00,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:13:00,607 INFO L87 Difference]: Start difference. First operand has 301 states, 299 states have (on average 1.7892976588628762) internal successors, (535), 300 states have internal predecessors, (535), 0 states have call successors, (0), 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 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:00,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:13:00,879 INFO L93 Difference]: Finished difference Result 1140 states and 2035 transitions. [2024-11-08 18:13:00,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:13:00,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2024-11-08 18:13:00,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:13:00,911 INFO L225 Difference]: With dead ends: 1140 [2024-11-08 18:13:00,911 INFO L226 Difference]: Without dead ends: 857 [2024-11-08 18:13:00,917 INFO L431 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 [2024-11-08 18:13:00,924 INFO L432 NwaCegarLoop]: 920 mSDtfsCounter, 1057 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:13:00,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 1902 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:13:00,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2024-11-08 18:13:00,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 577. [2024-11-08 18:13:00,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 576 states have (on average 1.453125) internal successors, (837), 576 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:00,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 837 transitions. [2024-11-08 18:13:00,997 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 837 transitions. Word has length 143 [2024-11-08 18:13:00,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:13:00,998 INFO L471 AbstractCegarLoop]: Abstraction has 577 states and 837 transitions. [2024-11-08 18:13:00,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:00,998 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 837 transitions. [2024-11-08 18:13:01,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-08 18:13:01,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:13:01,003 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:13:01,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:13:01,003 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:13:01,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:13:01,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1916078526, now seen corresponding path program 1 times [2024-11-08 18:13:01,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:13:01,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035466089] [2024-11-08 18:13:01,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:13:01,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:13:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:01,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:13:01,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:13:01,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035466089] [2024-11-08 18:13:01,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035466089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:13:01,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:13:01,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:13:01,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066839560] [2024-11-08 18:13:01,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:13:01,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:13:01,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:13:01,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:13:01,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:13:01,192 INFO L87 Difference]: Start difference. First operand 577 states and 837 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:01,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:13:01,221 INFO L93 Difference]: Finished difference Result 1128 states and 1630 transitions. [2024-11-08 18:13:01,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:13:01,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2024-11-08 18:13:01,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:13:01,224 INFO L225 Difference]: With dead ends: 1128 [2024-11-08 18:13:01,224 INFO L226 Difference]: Without dead ends: 579 [2024-11-08 18:13:01,228 INFO L431 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 [2024-11-08 18:13:01,230 INFO L432 NwaCegarLoop]: 437 mSDtfsCounter, 0 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:13:01,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 868 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:13:01,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-08 18:13:01,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2024-11-08 18:13:01,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 578 states have (on average 1.4515570934256055) internal successors, (839), 578 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:01,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 839 transitions. [2024-11-08 18:13:01,265 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 839 transitions. Word has length 144 [2024-11-08 18:13:01,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:13:01,265 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 839 transitions. [2024-11-08 18:13:01,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:01,266 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 839 transitions. [2024-11-08 18:13:01,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-08 18:13:01,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:13:01,269 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:13:01,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:13:01,270 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:13:01,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:13:01,270 INFO L85 PathProgramCache]: Analyzing trace with hash 372219765, now seen corresponding path program 1 times [2024-11-08 18:13:01,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:13:01,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959870630] [2024-11-08 18:13:01,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:13:01,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:13:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:02,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:13:02,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:13:02,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959870630] [2024-11-08 18:13:02,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959870630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:13:02,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:13:02,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:13:02,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453830051] [2024-11-08 18:13:02,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:13:02,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:13:02,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:13:02,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:13:02,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:13:02,030 INFO L87 Difference]: Start difference. First operand 579 states and 839 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:02,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:13:02,067 INFO L93 Difference]: Finished difference Result 1144 states and 1656 transitions. [2024-11-08 18:13:02,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:13:02,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2024-11-08 18:13:02,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:13:02,070 INFO L225 Difference]: With dead ends: 1144 [2024-11-08 18:13:02,070 INFO L226 Difference]: Without dead ends: 579 [2024-11-08 18:13:02,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:13:02,072 INFO L432 NwaCegarLoop]: 473 mSDtfsCounter, 20 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:13:02,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1373 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:13:02,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-08 18:13:02,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 578. [2024-11-08 18:13:02,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 577 states have (on average 1.4471403812824957) internal successors, (835), 577 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:02,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 835 transitions. [2024-11-08 18:13:02,095 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 835 transitions. Word has length 145 [2024-11-08 18:13:02,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:13:02,097 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 835 transitions. [2024-11-08 18:13:02,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:02,097 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 835 transitions. [2024-11-08 18:13:02,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-08 18:13:02,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:13:02,104 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:13:02,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:13:02,105 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:13:02,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:13:02,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1318569504, now seen corresponding path program 1 times [2024-11-08 18:13:02,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:13:02,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254962409] [2024-11-08 18:13:02,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:13:02,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:13:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:13:02,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:13:02,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254962409] [2024-11-08 18:13:02,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254962409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:13:02,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:13:02,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:13:02,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231997537] [2024-11-08 18:13:02,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:13:02,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:13:02,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:13:02,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:13:02,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:13:02,272 INFO L87 Difference]: Start difference. First operand 578 states and 835 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:02,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:13:02,335 INFO L93 Difference]: Finished difference Result 1520 states and 2208 transitions. [2024-11-08 18:13:02,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:13:02,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2024-11-08 18:13:02,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:13:02,340 INFO L225 Difference]: With dead ends: 1520 [2024-11-08 18:13:02,340 INFO L226 Difference]: Without dead ends: 1117 [2024-11-08 18:13:02,343 INFO L431 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 [2024-11-08 18:13:02,344 INFO L432 NwaCegarLoop]: 783 mSDtfsCounter, 363 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:13:02,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 1177 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:13:02,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2024-11-08 18:13:02,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1115. [2024-11-08 18:13:02,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.4326750448833034) internal successors, (1596), 1114 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:02,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1596 transitions. [2024-11-08 18:13:02,373 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1596 transitions. Word has length 145 [2024-11-08 18:13:02,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:13:02,374 INFO L471 AbstractCegarLoop]: Abstraction has 1115 states and 1596 transitions. [2024-11-08 18:13:02,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:02,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1596 transitions. [2024-11-08 18:13:02,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-08 18:13:02,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:13:02,377 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:13:02,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:13:02,378 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:13:02,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:13:02,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1084598691, now seen corresponding path program 1 times [2024-11-08 18:13:02,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:13:02,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279746492] [2024-11-08 18:13:02,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:13:02,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:13:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:03,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:13:03,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:13:03,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279746492] [2024-11-08 18:13:03,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279746492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:13:03,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:13:03,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:13:03,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163063198] [2024-11-08 18:13:03,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:13:03,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:13:03,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:13:03,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:13:03,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:13:03,020 INFO L87 Difference]: Start difference. First operand 1115 states and 1596 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:03,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:13:03,055 INFO L93 Difference]: Finished difference Result 1800 states and 2589 transitions. [2024-11-08 18:13:03,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:13:03,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2024-11-08 18:13:03,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:13:03,059 INFO L225 Difference]: With dead ends: 1800 [2024-11-08 18:13:03,059 INFO L226 Difference]: Without dead ends: 850 [2024-11-08 18:13:03,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:13:03,061 INFO L432 NwaCegarLoop]: 476 mSDtfsCounter, 23 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:13:03,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1377 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:13:03,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2024-11-08 18:13:03,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 850. [2024-11-08 18:13:03,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 849 states have (on average 1.426383981154299) internal successors, (1211), 849 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:03,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1211 transitions. [2024-11-08 18:13:03,081 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1211 transitions. Word has length 145 [2024-11-08 18:13:03,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:13:03,082 INFO L471 AbstractCegarLoop]: Abstraction has 850 states and 1211 transitions. [2024-11-08 18:13:03,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:03,082 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1211 transitions. [2024-11-08 18:13:03,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-08 18:13:03,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:13:03,085 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:13:03,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:13:03,085 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:13:03,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:13:03,086 INFO L85 PathProgramCache]: Analyzing trace with hash -58966724, now seen corresponding path program 1 times [2024-11-08 18:13:03,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:13:03,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716050060] [2024-11-08 18:13:03,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:13:03,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:13:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:03,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:13:03,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:13:03,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716050060] [2024-11-08 18:13:03,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716050060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:13:03,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:13:03,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 18:13:03,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600444029] [2024-11-08 18:13:03,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:13:03,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 18:13:03,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:13:03,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 18:13:03,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:13:03,812 INFO L87 Difference]: Start difference. First operand 850 states and 1211 transitions. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:04,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:13:04,801 INFO L93 Difference]: Finished difference Result 2994 states and 4523 transitions. [2024-11-08 18:13:04,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 18:13:04,801 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2024-11-08 18:13:04,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:13:04,809 INFO L225 Difference]: With dead ends: 2994 [2024-11-08 18:13:04,809 INFO L226 Difference]: Without dead ends: 2342 [2024-11-08 18:13:04,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:13:04,812 INFO L432 NwaCegarLoop]: 339 mSDtfsCounter, 4395 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4395 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:13:04,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4395 Valid, 1951 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 18:13:04,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2024-11-08 18:13:04,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 1695. [2024-11-08 18:13:04,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1694 states have (on average 1.4645808736717827) internal successors, (2481), 1694 states have internal predecessors, (2481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:04,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2481 transitions. [2024-11-08 18:13:04,865 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2481 transitions. Word has length 148 [2024-11-08 18:13:04,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:13:04,865 INFO L471 AbstractCegarLoop]: Abstraction has 1695 states and 2481 transitions. [2024-11-08 18:13:04,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:04,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2481 transitions. [2024-11-08 18:13:04,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-08 18:13:04,869 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:13:04,869 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:13:04,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:13:04,870 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:13:04,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:13:04,870 INFO L85 PathProgramCache]: Analyzing trace with hash -598721762, now seen corresponding path program 1 times [2024-11-08 18:13:04,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:13:04,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055202094] [2024-11-08 18:13:04,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:13:04,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:13:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:05,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:13:05,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:13:05,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055202094] [2024-11-08 18:13:05,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055202094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:13:05,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:13:05,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:13:05,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105277625] [2024-11-08 18:13:05,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:13:05,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:13:05,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:13:05,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:13:05,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:13:05,390 INFO L87 Difference]: Start difference. First operand 1695 states and 2481 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:05,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:13:05,493 INFO L93 Difference]: Finished difference Result 2851 states and 4352 transitions. [2024-11-08 18:13:05,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:13:05,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2024-11-08 18:13:05,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:13:05,501 INFO L225 Difference]: With dead ends: 2851 [2024-11-08 18:13:05,502 INFO L226 Difference]: Without dead ends: 1999 [2024-11-08 18:13:05,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:13:05,506 INFO L432 NwaCegarLoop]: 401 mSDtfsCounter, 527 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:13:05,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 844 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:13:05,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2024-11-08 18:13:05,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1997. [2024-11-08 18:13:05,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1997 states, 1996 states have (on average 1.4804609218436873) internal successors, (2955), 1996 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:05,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 2955 transitions. [2024-11-08 18:13:05,565 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 2955 transitions. Word has length 148 [2024-11-08 18:13:05,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:13:05,566 INFO L471 AbstractCegarLoop]: Abstraction has 1997 states and 2955 transitions. [2024-11-08 18:13:05,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:05,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 2955 transitions. [2024-11-08 18:13:05,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-08 18:13:05,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:13:05,570 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:13:05,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 18:13:05,571 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:13:05,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:13:05,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1227455278, now seen corresponding path program 1 times [2024-11-08 18:13:05,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:13:05,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86520738] [2024-11-08 18:13:05,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:13:05,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:13:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:06,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:13:06,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:13:06,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86520738] [2024-11-08 18:13:06,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86520738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:13:06,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:13:06,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:13:06,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468430787] [2024-11-08 18:13:06,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:13:06,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:13:06,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:13:06,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:13:06,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:13:06,021 INFO L87 Difference]: Start difference. First operand 1997 states and 2955 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:06,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:13:06,103 INFO L93 Difference]: Finished difference Result 5171 states and 7649 transitions. [2024-11-08 18:13:06,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:13:06,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2024-11-08 18:13:06,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:13:06,114 INFO L225 Difference]: With dead ends: 5171 [2024-11-08 18:13:06,115 INFO L226 Difference]: Without dead ends: 3211 [2024-11-08 18:13:06,117 INFO L431 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 [2024-11-08 18:13:06,118 INFO L432 NwaCegarLoop]: 742 mSDtfsCounter, 735 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:13:06,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 1126 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:13:06,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2024-11-08 18:13:06,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 3209. [2024-11-08 18:13:06,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3209 states, 3208 states have (on average 1.4660224438902743) internal successors, (4703), 3208 states have internal predecessors, (4703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:06,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3209 states to 3209 states and 4703 transitions. [2024-11-08 18:13:06,214 INFO L78 Accepts]: Start accepts. Automaton has 3209 states and 4703 transitions. Word has length 148 [2024-11-08 18:13:06,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:13:06,215 INFO L471 AbstractCegarLoop]: Abstraction has 3209 states and 4703 transitions. [2024-11-08 18:13:06,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:06,215 INFO L276 IsEmpty]: Start isEmpty. Operand 3209 states and 4703 transitions. [2024-11-08 18:13:06,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-08 18:13:06,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:13:06,219 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:13:06,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 18:13:06,220 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:13:06,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:13:06,220 INFO L85 PathProgramCache]: Analyzing trace with hash -729321734, now seen corresponding path program 1 times [2024-11-08 18:13:06,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:13:06,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893843197] [2024-11-08 18:13:06,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:13:06,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:13:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:06,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:13:06,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:13:06,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893843197] [2024-11-08 18:13:06,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893843197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:13:06,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:13:06,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:13:06,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714622070] [2024-11-08 18:13:06,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:13:06,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:13:06,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:13:06,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:13:06,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:13:06,357 INFO L87 Difference]: Start difference. First operand 3209 states and 4703 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:06,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:13:06,438 INFO L93 Difference]: Finished difference Result 7870 states and 11591 transitions. [2024-11-08 18:13:06,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:13:06,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2024-11-08 18:13:06,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:13:06,454 INFO L225 Difference]: With dead ends: 7870 [2024-11-08 18:13:06,454 INFO L226 Difference]: Without dead ends: 4997 [2024-11-08 18:13:06,458 INFO L431 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 [2024-11-08 18:13:06,458 INFO L432 NwaCegarLoop]: 789 mSDtfsCounter, 354 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:13:06,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 1173 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:13:06,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4997 states. [2024-11-08 18:13:06,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4997 to 4995. [2024-11-08 18:13:06,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4995 states, 4994 states have (on average 1.448338005606728) internal successors, (7233), 4994 states have internal predecessors, (7233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:06,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4995 states to 4995 states and 7233 transitions. [2024-11-08 18:13:06,630 INFO L78 Accepts]: Start accepts. Automaton has 4995 states and 7233 transitions. Word has length 150 [2024-11-08 18:13:06,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:13:06,630 INFO L471 AbstractCegarLoop]: Abstraction has 4995 states and 7233 transitions. [2024-11-08 18:13:06,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:06,631 INFO L276 IsEmpty]: Start isEmpty. Operand 4995 states and 7233 transitions. [2024-11-08 18:13:06,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-08 18:13:06,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:13:06,636 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:13:06,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 18:13:06,637 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:13:06,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:13:06,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1349337187, now seen corresponding path program 1 times [2024-11-08 18:13:06,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:13:06,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918322490] [2024-11-08 18:13:06,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:13:06,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:13:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:06,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:13:06,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:13:06,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918322490] [2024-11-08 18:13:06,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918322490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:13:06,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:13:06,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:13:06,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679912407] [2024-11-08 18:13:06,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:13:06,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:13:06,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:13:06,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:13:06,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:13:06,745 INFO L87 Difference]: Start difference. First operand 4995 states and 7233 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:07,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:13:07,021 INFO L93 Difference]: Finished difference Result 13240 states and 19436 transitions. [2024-11-08 18:13:07,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:13:07,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2024-11-08 18:13:07,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:13:07,061 INFO L225 Difference]: With dead ends: 13240 [2024-11-08 18:13:07,063 INFO L226 Difference]: Without dead ends: 9648 [2024-11-08 18:13:07,068 INFO L431 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 [2024-11-08 18:13:07,069 INFO L432 NwaCegarLoop]: 364 mSDtfsCounter, 339 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:13:07,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 689 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:13:07,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9648 states. [2024-11-08 18:13:07,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9648 to 9646. [2024-11-08 18:13:07,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9646 states, 9645 states have (on average 1.4469673405909798) internal successors, (13956), 9645 states have internal predecessors, (13956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:07,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9646 states to 9646 states and 13956 transitions. [2024-11-08 18:13:07,416 INFO L78 Accepts]: Start accepts. Automaton has 9646 states and 13956 transitions. Word has length 153 [2024-11-08 18:13:07,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:13:07,416 INFO L471 AbstractCegarLoop]: Abstraction has 9646 states and 13956 transitions. [2024-11-08 18:13:07,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:07,417 INFO L276 IsEmpty]: Start isEmpty. Operand 9646 states and 13956 transitions. [2024-11-08 18:13:07,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-08 18:13:07,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:13:07,426 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:13:07,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 18:13:07,426 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:13:07,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:13:07,427 INFO L85 PathProgramCache]: Analyzing trace with hash 41062658, now seen corresponding path program 1 times [2024-11-08 18:13:07,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:13:07,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217076090] [2024-11-08 18:13:07,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:13:07,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:13:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:13:08,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:13:08,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217076090] [2024-11-08 18:13:08,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217076090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:13:08,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:13:08,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 18:13:08,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675386406] [2024-11-08 18:13:08,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:13:08,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 18:13:08,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:13:08,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 18:13:08,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:13:08,138 INFO L87 Difference]: Start difference. First operand 9646 states and 13956 transitions. Second operand has 9 states, 9 states have (on average 17.0) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:09,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:13:09,217 INFO L93 Difference]: Finished difference Result 45714 states and 68379 transitions. [2024-11-08 18:13:09,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 18:13:09,218 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.0) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2024-11-08 18:13:09,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:13:09,295 INFO L225 Difference]: With dead ends: 45714 [2024-11-08 18:13:09,295 INFO L226 Difference]: Without dead ends: 36644 [2024-11-08 18:13:09,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:13:09,313 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 4146 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4146 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:13:09,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4146 Valid, 1935 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 18:13:09,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36644 states. [2024-11-08 18:13:10,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36644 to 25528. [2024-11-08 18:13:10,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25528 states, 25527 states have (on average 1.4659772006111176) internal successors, (37422), 25527 states have internal predecessors, (37422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:10,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25528 states to 25528 states and 37422 transitions. [2024-11-08 18:13:10,198 INFO L78 Accepts]: Start accepts. Automaton has 25528 states and 37422 transitions. Word has length 153 [2024-11-08 18:13:10,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:13:10,198 INFO L471 AbstractCegarLoop]: Abstraction has 25528 states and 37422 transitions. [2024-11-08 18:13:10,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.0) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:10,199 INFO L276 IsEmpty]: Start isEmpty. Operand 25528 states and 37422 transitions. [2024-11-08 18:13:10,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-08 18:13:10,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:13:10,213 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:13:10,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 18:13:10,214 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:13:10,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:13:10,214 INFO L85 PathProgramCache]: Analyzing trace with hash -132506612, now seen corresponding path program 1 times [2024-11-08 18:13:10,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:13:10,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838018846] [2024-11-08 18:13:10,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:13:10,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:13:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:10,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:13:10,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:13:10,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838018846] [2024-11-08 18:13:10,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838018846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:13:10,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:13:10,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:13:10,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054801584] [2024-11-08 18:13:10,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:13:10,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:13:10,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:13:10,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:13:10,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:13:10,617 INFO L87 Difference]: Start difference. First operand 25528 states and 37422 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:10,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:13:10,978 INFO L93 Difference]: Finished difference Result 49156 states and 74076 transitions. [2024-11-08 18:13:10,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:13:10,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2024-11-08 18:13:10,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:13:11,052 INFO L225 Difference]: With dead ends: 49156 [2024-11-08 18:13:11,053 INFO L226 Difference]: Without dead ends: 31258 [2024-11-08 18:13:11,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:13:11,076 INFO L432 NwaCegarLoop]: 392 mSDtfsCounter, 494 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:13:11,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 830 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:13:11,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31258 states. [2024-11-08 18:13:11,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31258 to 31256. [2024-11-08 18:13:11,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31256 states, 31255 states have (on average 1.4720844664853623) internal successors, (46010), 31255 states have internal predecessors, (46010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:11,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31256 states to 31256 states and 46010 transitions. [2024-11-08 18:13:11,936 INFO L78 Accepts]: Start accepts. Automaton has 31256 states and 46010 transitions. Word has length 153 [2024-11-08 18:13:11,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:13:11,937 INFO L471 AbstractCegarLoop]: Abstraction has 31256 states and 46010 transitions. [2024-11-08 18:13:11,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:11,937 INFO L276 IsEmpty]: Start isEmpty. Operand 31256 states and 46010 transitions. [2024-11-08 18:13:11,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-08 18:13:11,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:13:11,952 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:13:11,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 18:13:11,953 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:13:11,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:13:11,953 INFO L85 PathProgramCache]: Analyzing trace with hash -298162772, now seen corresponding path program 1 times [2024-11-08 18:13:11,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:13:11,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769384407] [2024-11-08 18:13:11,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:13:11,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:13:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:12,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:13:12,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:13:12,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769384407] [2024-11-08 18:13:12,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769384407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:13:12,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:13:12,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:13:12,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055259414] [2024-11-08 18:13:12,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:13:12,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:13:12,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:13:12,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:13:12,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:13:12,199 INFO L87 Difference]: Start difference. First operand 31256 states and 46010 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:12,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:13:12,817 INFO L93 Difference]: Finished difference Result 86854 states and 131184 transitions. [2024-11-08 18:13:12,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:13:12,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2024-11-08 18:13:12,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:13:13,157 INFO L225 Difference]: With dead ends: 86854 [2024-11-08 18:13:13,157 INFO L226 Difference]: Without dead ends: 74636 [2024-11-08 18:13:13,174 INFO L431 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 [2024-11-08 18:13:13,175 INFO L432 NwaCegarLoop]: 519 mSDtfsCounter, 973 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:13:13,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 1322 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:13:13,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74636 states. [2024-11-08 18:13:14,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74636 to 58862. [2024-11-08 18:13:14,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58862 states, 58861 states have (on average 1.490018857987462) internal successors, (87704), 58861 states have internal predecessors, (87704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:14,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58862 states to 58862 states and 87704 transitions. [2024-11-08 18:13:14,478 INFO L78 Accepts]: Start accepts. Automaton has 58862 states and 87704 transitions. Word has length 153 [2024-11-08 18:13:14,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:13:14,479 INFO L471 AbstractCegarLoop]: Abstraction has 58862 states and 87704 transitions. [2024-11-08 18:13:14,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:14,479 INFO L276 IsEmpty]: Start isEmpty. Operand 58862 states and 87704 transitions. [2024-11-08 18:13:14,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-08 18:13:14,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:13:14,497 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:13:14,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 18:13:14,498 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:13:14,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:13:14,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2089564, now seen corresponding path program 1 times [2024-11-08 18:13:14,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:13:14,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664253278] [2024-11-08 18:13:14,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:13:14,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:13:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:14,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:13:14,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:13:14,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664253278] [2024-11-08 18:13:14,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664253278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:13:14,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:13:14,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:13:14,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434341653] [2024-11-08 18:13:14,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:13:14,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:13:14,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:13:14,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:13:14,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:13:14,936 INFO L87 Difference]: Start difference. First operand 58862 states and 87704 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:15,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:13:15,755 INFO L93 Difference]: Finished difference Result 143718 states and 217500 transitions. [2024-11-08 18:13:15,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:13:15,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2024-11-08 18:13:15,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:13:15,988 INFO L225 Difference]: With dead ends: 143718 [2024-11-08 18:13:15,989 INFO L226 Difference]: Without dead ends: 93208 [2024-11-08 18:13:16,038 INFO L431 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 [2024-11-08 18:13:16,038 INFO L432 NwaCegarLoop]: 394 mSDtfsCounter, 256 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:13:16,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 706 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:13:16,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93208 states. [2024-11-08 18:13:17,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93208 to 93206. [2024-11-08 18:13:17,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93206 states, 93205 states have (on average 1.5005418164261575) internal successors, (139858), 93205 states have internal predecessors, (139858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:17,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93206 states to 93206 states and 139858 transitions. [2024-11-08 18:13:17,615 INFO L78 Accepts]: Start accepts. Automaton has 93206 states and 139858 transitions. Word has length 153 [2024-11-08 18:13:17,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:13:17,617 INFO L471 AbstractCegarLoop]: Abstraction has 93206 states and 139858 transitions. [2024-11-08 18:13:17,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:17,618 INFO L276 IsEmpty]: Start isEmpty. Operand 93206 states and 139858 transitions. [2024-11-08 18:13:17,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-08 18:13:17,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:13:17,982 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:13:17,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 18:13:17,982 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:13:17,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:13:17,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1614354205, now seen corresponding path program 1 times [2024-11-08 18:13:17,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:13:17,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987624965] [2024-11-08 18:13:17,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:13:17,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:13:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:18,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:13:18,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:13:18,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987624965] [2024-11-08 18:13:18,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987624965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:13:18,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:13:18,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:13:18,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900740686] [2024-11-08 18:13:18,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:13:18,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:13:18,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:13:18,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:13:18,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:13:18,507 INFO L87 Difference]: Start difference. First operand 93206 states and 139858 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:19,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:13:19,770 INFO L93 Difference]: Finished difference Result 360905 states and 542892 transitions. [2024-11-08 18:13:19,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:13:19,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2024-11-08 18:13:19,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:13:20,136 INFO L225 Difference]: With dead ends: 360905 [2024-11-08 18:13:20,137 INFO L226 Difference]: Without dead ends: 267764 [2024-11-08 18:13:20,208 INFO L431 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 [2024-11-08 18:13:20,209 INFO L432 NwaCegarLoop]: 702 mSDtfsCounter, 723 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:13:20,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 1439 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:13:20,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267764 states. [2024-11-08 18:13:23,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267764 to 180489. [2024-11-08 18:13:23,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180489 states, 180488 states have (on average 1.4918110899339567) internal successors, (269254), 180488 states have internal predecessors, (269254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:24,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180489 states to 180489 states and 269254 transitions. [2024-11-08 18:13:24,069 INFO L78 Accepts]: Start accepts. Automaton has 180489 states and 269254 transitions. Word has length 153 [2024-11-08 18:13:24,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:13:24,069 INFO L471 AbstractCegarLoop]: Abstraction has 180489 states and 269254 transitions. [2024-11-08 18:13:24,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:24,070 INFO L276 IsEmpty]: Start isEmpty. Operand 180489 states and 269254 transitions. [2024-11-08 18:13:24,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-08 18:13:24,724 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:13:24,724 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:13:24,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 18:13:24,724 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:13:24,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:13:24,725 INFO L85 PathProgramCache]: Analyzing trace with hash 2004928391, now seen corresponding path program 1 times [2024-11-08 18:13:24,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:13:24,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218481142] [2024-11-08 18:13:24,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:13:24,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:13:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:24,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:13:24,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:13:24,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218481142] [2024-11-08 18:13:24,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218481142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:13:24,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:13:24,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:13:24,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035422610] [2024-11-08 18:13:24,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:13:24,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:13:24,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:13:24,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:13:24,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:13:24,969 INFO L87 Difference]: Start difference. First operand 180489 states and 269254 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:25,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:13:25,881 INFO L93 Difference]: Finished difference Result 360865 states and 538353 transitions. [2024-11-08 18:13:25,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:13:25,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2024-11-08 18:13:25,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:13:27,066 INFO L225 Difference]: With dead ends: 360865 [2024-11-08 18:13:27,066 INFO L226 Difference]: Without dead ends: 180497 [2024-11-08 18:13:27,195 INFO L431 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 [2024-11-08 18:13:27,200 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 0 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:13:27,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 836 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:13:27,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180497 states. [2024-11-08 18:13:29,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180497 to 180497. [2024-11-08 18:13:29,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180497 states, 180496 states have (on average 1.4917892917294566) internal successors, (269262), 180496 states have internal predecessors, (269262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:29,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180497 states to 180497 states and 269262 transitions. [2024-11-08 18:13:29,929 INFO L78 Accepts]: Start accepts. Automaton has 180497 states and 269262 transitions. Word has length 154 [2024-11-08 18:13:29,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:13:29,929 INFO L471 AbstractCegarLoop]: Abstraction has 180497 states and 269262 transitions. [2024-11-08 18:13:29,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:29,930 INFO L276 IsEmpty]: Start isEmpty. Operand 180497 states and 269262 transitions. [2024-11-08 18:13:29,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-08 18:13:29,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:13:29,944 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:13:29,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 18:13:29,944 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:13:29,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:13:29,945 INFO L85 PathProgramCache]: Analyzing trace with hash -273757565, now seen corresponding path program 1 times [2024-11-08 18:13:29,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:13:29,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140208736] [2024-11-08 18:13:29,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:13:29,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:13:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:30,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:13:30,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:13:30,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140208736] [2024-11-08 18:13:30,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140208736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:13:30,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:13:30,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:13:30,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055803557] [2024-11-08 18:13:30,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:13:30,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:13:30,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:13:30,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:13:30,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:13:30,061 INFO L87 Difference]: Start difference. First operand 180497 states and 269262 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:31,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:13:31,975 INFO L93 Difference]: Finished difference Result 486517 states and 724765 transitions. [2024-11-08 18:13:31,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:13:31,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2024-11-08 18:13:31,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:13:33,288 INFO L225 Difference]: With dead ends: 486517 [2024-11-08 18:13:33,289 INFO L226 Difference]: Without dead ends: 307107 [2024-11-08 18:13:33,409 INFO L431 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 [2024-11-08 18:13:33,409 INFO L432 NwaCegarLoop]: 775 mSDtfsCounter, 338 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:13:33,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 1158 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:13:33,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307107 states. [2024-11-08 18:13:38,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307107 to 307105. [2024-11-08 18:13:38,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307105 states, 307104 states have (on average 1.4742986089402939) internal successors, (452763), 307104 states have internal predecessors, (452763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:38,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307105 states to 307105 states and 452763 transitions. [2024-11-08 18:13:38,939 INFO L78 Accepts]: Start accepts. Automaton has 307105 states and 452763 transitions. Word has length 155 [2024-11-08 18:13:38,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:13:38,939 INFO L471 AbstractCegarLoop]: Abstraction has 307105 states and 452763 transitions. [2024-11-08 18:13:38,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:38,940 INFO L276 IsEmpty]: Start isEmpty. Operand 307105 states and 452763 transitions. [2024-11-08 18:13:38,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-08 18:13:38,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:13:38,995 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:13:38,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 18:13:38,996 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:13:38,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:13:38,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1672036410, now seen corresponding path program 1 times [2024-11-08 18:13:38,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:13:38,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938812003] [2024-11-08 18:13:38,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:13:38,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:13:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:39,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:13:39,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:13:39,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938812003] [2024-11-08 18:13:39,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938812003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:13:39,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:13:39,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:13:39,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103834869] [2024-11-08 18:13:39,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:13:39,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:13:39,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:13:39,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:13:39,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:13:39,540 INFO L87 Difference]: Start difference. First operand 307105 states and 452763 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:13:42,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:13:42,837 INFO L93 Difference]: Finished difference Result 614357 states and 905679 transitions. [2024-11-08 18:13:42,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:13:42,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2024-11-08 18:13:42,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:13:43,375 INFO L225 Difference]: With dead ends: 614357 [2024-11-08 18:13:43,376 INFO L226 Difference]: Without dead ends: 307311 [2024-11-08 18:13:43,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:13:43,523 INFO L432 NwaCegarLoop]: 704 mSDtfsCounter, 349 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 2434 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:13:43,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 2434 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:13:43,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307311 states.