./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215f547f-d2da-4748-aafe-a048c277b641/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215f547f-d2da-4748-aafe-a048c277b641/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215f547f-d2da-4748-aafe-a048c277b641/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215f547f-d2da-4748-aafe-a048c277b641/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215f547f-d2da-4748-aafe-a048c277b641/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215f547f-d2da-4748-aafe-a048c277b641/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 4eae6e6c8bbb105c3dcf0e7edf73f931915af6d6745ce5116ee35a4a9fee030a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:41:28,656 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:41:28,738 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215f547f-d2da-4748-aafe-a048c277b641/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:41:28,743 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:41:28,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:41:28,770 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:41:28,771 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:41:28,772 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:41:28,773 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:41:28,773 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:41:28,774 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:41:28,775 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:41:28,775 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:41:28,776 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:41:28,777 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:41:28,777 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:41:28,778 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:41:28,778 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:41:28,779 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:41:28,779 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:41:28,780 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:41:28,781 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:41:28,781 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:41:28,782 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:41:28,782 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:41:28,783 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:41:28,783 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:41:28,783 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:41:28,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:41:28,784 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:41:28,785 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:41:28,785 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:41:28,785 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:41:28,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:41:28,786 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:41:28,786 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:41:28,786 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:41:28,787 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:41:28,787 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:41:28,787 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_215f547f-d2da-4748-aafe-a048c277b641/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215f547f-d2da-4748-aafe-a048c277b641/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eae6e6c8bbb105c3dcf0e7edf73f931915af6d6745ce5116ee35a4a9fee030a [2023-11-06 22:41:29,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:41:29,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:41:29,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:41:29,127 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:41:29,127 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:41:29,129 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215f547f-d2da-4748-aafe-a048c277b641/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-11-06 22:41:32,130 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:41:32,538 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:41:32,538 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215f547f-d2da-4748-aafe-a048c277b641/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-11-06 22:41:32,562 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215f547f-d2da-4748-aafe-a048c277b641/bin/uautomizer-verify-WvqO1wxjHP/data/484665d65/7a2819aecdfd426e9e935d4e4c02cf7c/FLAG780199709 [2023-11-06 22:41:32,579 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215f547f-d2da-4748-aafe-a048c277b641/bin/uautomizer-verify-WvqO1wxjHP/data/484665d65/7a2819aecdfd426e9e935d4e4c02cf7c [2023-11-06 22:41:32,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:41:32,594 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:41:32,598 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:41:32,598 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:41:32,603 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:41:32,604 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:41:32" (1/1) ... [2023-11-06 22:41:32,605 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64ae35cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:32, skipping insertion in model container [2023-11-06 22:41:32,605 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:41:32" (1/1) ... [2023-11-06 22:41:32,701 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:41:33,299 WARN L240 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_215f547f-d2da-4748-aafe-a048c277b641/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26539,26552] [2023-11-06 22:41:33,359 WARN L240 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_215f547f-d2da-4748-aafe-a048c277b641/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30716,30729] [2023-11-06 22:41:33,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:41:33,547 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:41:33,774 WARN L240 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_215f547f-d2da-4748-aafe-a048c277b641/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26539,26552] [2023-11-06 22:41:33,824 WARN L240 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_215f547f-d2da-4748-aafe-a048c277b641/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30716,30729] [2023-11-06 22:41:33,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:41:33,977 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:41:33,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33 WrapperNode [2023-11-06 22:41:33,977 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:41:33,979 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:41:33,979 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:41:33,979 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:41:33,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:34,014 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:34,128 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2684 [2023-11-06 22:41:34,128 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:41:34,129 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:41:34,129 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:41:34,129 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:41:34,139 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:34,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:34,151 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:34,151 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:34,240 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:34,291 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:34,321 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:34,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:34,358 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:41:34,359 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:41:34,359 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:41:34,359 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:41:34,360 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:34,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:41:34,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215f547f-d2da-4748-aafe-a048c277b641/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:34,390 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215f547f-d2da-4748-aafe-a048c277b641/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:41:34,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215f547f-d2da-4748-aafe-a048c277b641/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:41:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:41:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:41:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:41:34,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:41:34,681 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:41:34,684 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:41:36,578 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:41:36,599 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:41:36,600 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:41:36,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:41:36 BoogieIcfgContainer [2023-11-06 22:41:36,604 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:41:36,608 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:41:36,608 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:41:36,612 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:41:36,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:41:32" (1/3) ... [2023-11-06 22:41:36,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8364ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:41:36, skipping insertion in model container [2023-11-06 22:41:36,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (2/3) ... [2023-11-06 22:41:36,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8364ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:41:36, skipping insertion in model container [2023-11-06 22:41:36,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:41:36" (3/3) ... [2023-11-06 22:41:36,618 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-11-06 22:41:36,639 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:41:36,639 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:41:36,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:41:36,741 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@3261af71, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:41:36,741 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 22:41:36,751 INFO L276 IsEmpty]: Start isEmpty. Operand has 678 states, 668 states have (on average 1.7949101796407185) internal successors, (1199), 677 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:36,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-11-06 22:41:36,787 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:36,788 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:36,789 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:36,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:36,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1561865833, now seen corresponding path program 1 times [2023-11-06 22:41:36,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:36,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582346806] [2023-11-06 22:41:36,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:36,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:38,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:38,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:38,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582346806] [2023-11-06 22:41:38,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582346806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:38,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:38,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:41:38,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329289407] [2023-11-06 22:41:38,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:38,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:41:38,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:38,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:41:38,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:41:38,671 INFO L87 Difference]: Start difference. First operand has 678 states, 668 states have (on average 1.7949101796407185) internal successors, (1199), 677 states have internal predecessors, (1199), 0 states have call successors, (0), 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 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:39,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:39,118 INFO L93 Difference]: Finished difference Result 1995 states and 3530 transitions. [2023-11-06 22:41:39,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:41:39,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 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 243 [2023-11-06 22:41:39,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:39,145 INFO L225 Difference]: With dead ends: 1995 [2023-11-06 22:41:39,145 INFO L226 Difference]: Without dead ends: 1306 [2023-11-06 22:41:39,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:39,161 INFO L413 NwaCegarLoop]: 1706 mSDtfsCounter, 2857 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2857 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:39,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2857 Valid, 2838 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:41:39,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2023-11-06 22:41:39,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1270. [2023-11-06 22:41:39,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1268 states have (on average 1.5559936908517351) internal successors, (1973), 1269 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:39,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 1973 transitions. [2023-11-06 22:41:39,374 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 1973 transitions. Word has length 243 [2023-11-06 22:41:39,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:39,377 INFO L495 AbstractCegarLoop]: Abstraction has 1270 states and 1973 transitions. [2023-11-06 22:41:39,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:39,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 1973 transitions. [2023-11-06 22:41:39,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-11-06 22:41:39,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:39,386 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:39,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:41:39,387 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:39,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:39,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1217305663, now seen corresponding path program 1 times [2023-11-06 22:41:39,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:39,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893344614] [2023-11-06 22:41:39,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:39,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:39,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:39,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:39,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893344614] [2023-11-06 22:41:39,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893344614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:39,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:39,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:39,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315442610] [2023-11-06 22:41:39,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:39,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:39,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:39,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:39,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:39,766 INFO L87 Difference]: Start difference. First operand 1270 states and 1973 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:40,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:40,078 INFO L93 Difference]: Finished difference Result 3638 states and 5617 transitions. [2023-11-06 22:41:40,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:40,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 245 [2023-11-06 22:41:40,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:40,096 INFO L225 Difference]: With dead ends: 3638 [2023-11-06 22:41:40,096 INFO L226 Difference]: Without dead ends: 2493 [2023-11-06 22:41:40,098 INFO L412 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 [2023-11-06 22:41:40,100 INFO L413 NwaCegarLoop]: 2013 mSDtfsCounter, 900 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:40,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 2999 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:41:40,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2023-11-06 22:41:40,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2459. [2023-11-06 22:41:40,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2459 states, 2457 states have (on average 1.5478225478225478) internal successors, (3803), 2458 states have internal predecessors, (3803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:40,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 3803 transitions. [2023-11-06 22:41:40,353 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 3803 transitions. Word has length 245 [2023-11-06 22:41:40,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:40,355 INFO L495 AbstractCegarLoop]: Abstraction has 2459 states and 3803 transitions. [2023-11-06 22:41:40,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:40,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 3803 transitions. [2023-11-06 22:41:40,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-11-06 22:41:40,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:40,365 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:40,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:41:40,366 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:40,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:40,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1122282342, now seen corresponding path program 1 times [2023-11-06 22:41:40,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:40,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960393483] [2023-11-06 22:41:40,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:40,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:40,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:40,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:40,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960393483] [2023-11-06 22:41:40,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960393483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:40,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:40,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:40,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6030816] [2023-11-06 22:41:40,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:40,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:40,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:40,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:40,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:40,553 INFO L87 Difference]: Start difference. First operand 2459 states and 3803 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:41,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:41,131 INFO L93 Difference]: Finished difference Result 7310 states and 11293 transitions. [2023-11-06 22:41:41,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:41,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 245 [2023-11-06 22:41:41,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:41,161 INFO L225 Difference]: With dead ends: 7310 [2023-11-06 22:41:41,162 INFO L226 Difference]: Without dead ends: 4889 [2023-11-06 22:41:41,171 INFO L412 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 [2023-11-06 22:41:41,177 INFO L413 NwaCegarLoop]: 2058 mSDtfsCounter, 1026 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:41,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 3085 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:41:41,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4889 states. [2023-11-06 22:41:41,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4889 to 2478. [2023-11-06 22:41:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2476 states have (on average 1.547253634894992) internal successors, (3831), 2477 states have internal predecessors, (3831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:41,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 3831 transitions. [2023-11-06 22:41:41,544 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 3831 transitions. Word has length 245 [2023-11-06 22:41:41,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:41,545 INFO L495 AbstractCegarLoop]: Abstraction has 2478 states and 3831 transitions. [2023-11-06 22:41:41,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:41,545 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 3831 transitions. [2023-11-06 22:41:41,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-11-06 22:41:41,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:41,553 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:41,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:41:41,554 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:41,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:41,554 INFO L85 PathProgramCache]: Analyzing trace with hash -595902887, now seen corresponding path program 1 times [2023-11-06 22:41:41,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:41,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365460317] [2023-11-06 22:41:41,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:41,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:41,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:41,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:41,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365460317] [2023-11-06 22:41:41,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365460317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:41,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:41,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:41,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105655119] [2023-11-06 22:41:41,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:41,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:41,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:41,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:41,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:41,704 INFO L87 Difference]: Start difference. First operand 2478 states and 3831 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:42,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:42,447 INFO L93 Difference]: Finished difference Result 7329 states and 11314 transitions. [2023-11-06 22:41:42,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:42,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 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 246 [2023-11-06 22:41:42,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:42,476 INFO L225 Difference]: With dead ends: 7329 [2023-11-06 22:41:42,476 INFO L226 Difference]: Without dead ends: 4907 [2023-11-06 22:41:42,480 INFO L412 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 [2023-11-06 22:41:42,488 INFO L413 NwaCegarLoop]: 2058 mSDtfsCounter, 1021 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:42,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 3085 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:41:42,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4907 states. [2023-11-06 22:41:42,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4907 to 2496. [2023-11-06 22:41:42,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2494 states have (on average 1.5445068163592621) internal successors, (3852), 2495 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:42,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3852 transitions. [2023-11-06 22:41:42,994 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3852 transitions. Word has length 246 [2023-11-06 22:41:42,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:42,994 INFO L495 AbstractCegarLoop]: Abstraction has 2496 states and 3852 transitions. [2023-11-06 22:41:42,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:42,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3852 transitions. [2023-11-06 22:41:43,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-11-06 22:41:43,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:43,003 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:43,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:41:43,004 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:43,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:43,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1136476515, now seen corresponding path program 1 times [2023-11-06 22:41:43,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:43,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130827672] [2023-11-06 22:41:43,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:43,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:43,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:43,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:43,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130827672] [2023-11-06 22:41:43,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130827672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:43,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:43,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:43,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875437616] [2023-11-06 22:41:43,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:43,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:43,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:43,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:43,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:43,189 INFO L87 Difference]: Start difference. First operand 2496 states and 3852 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:43,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:43,804 INFO L93 Difference]: Finished difference Result 5017 states and 7754 transitions. [2023-11-06 22:41:43,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:43,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 247 [2023-11-06 22:41:43,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:43,824 INFO L225 Difference]: With dead ends: 5017 [2023-11-06 22:41:43,825 INFO L226 Difference]: Without dead ends: 3340 [2023-11-06 22:41:43,828 INFO L412 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 [2023-11-06 22:41:43,828 INFO L413 NwaCegarLoop]: 1377 mSDtfsCounter, 527 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:43,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 2202 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:41:43,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3340 states. [2023-11-06 22:41:44,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3340 to 2980. [2023-11-06 22:41:44,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2980 states, 2978 states have (on average 1.552048354600403) internal successors, (4622), 2979 states have internal predecessors, (4622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:44,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 4622 transitions. [2023-11-06 22:41:44,383 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 4622 transitions. Word has length 247 [2023-11-06 22:41:44,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:44,384 INFO L495 AbstractCegarLoop]: Abstraction has 2980 states and 4622 transitions. [2023-11-06 22:41:44,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:44,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 4622 transitions. [2023-11-06 22:41:44,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-11-06 22:41:44,394 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:44,395 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:44,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:41:44,396 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:44,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:44,397 INFO L85 PathProgramCache]: Analyzing trace with hash -325556156, now seen corresponding path program 1 times [2023-11-06 22:41:44,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:44,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074230143] [2023-11-06 22:41:44,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:44,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:44,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:44,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:44,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074230143] [2023-11-06 22:41:44,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074230143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:44,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:44,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:44,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166240278] [2023-11-06 22:41:44,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:44,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:44,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:44,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:44,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:44,673 INFO L87 Difference]: Start difference. First operand 2980 states and 4622 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:45,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:45,696 INFO L93 Difference]: Finished difference Result 8488 states and 13097 transitions. [2023-11-06 22:41:45,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:45,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 247 [2023-11-06 22:41:45,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:45,730 INFO L225 Difference]: With dead ends: 8488 [2023-11-06 22:41:45,730 INFO L226 Difference]: Without dead ends: 5749 [2023-11-06 22:41:45,735 INFO L412 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 [2023-11-06 22:41:45,736 INFO L413 NwaCegarLoop]: 2014 mSDtfsCounter, 891 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:45,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 2997 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:41:45,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5749 states. [2023-11-06 22:41:46,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5749 to 5717. [2023-11-06 22:41:46,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5717 states, 5715 states have (on average 1.5405074365704288) internal successors, (8804), 5716 states have internal predecessors, (8804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5717 states to 5717 states and 8804 transitions. [2023-11-06 22:41:46,707 INFO L78 Accepts]: Start accepts. Automaton has 5717 states and 8804 transitions. Word has length 247 [2023-11-06 22:41:46,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:46,708 INFO L495 AbstractCegarLoop]: Abstraction has 5717 states and 8804 transitions. [2023-11-06 22:41:46,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,709 INFO L276 IsEmpty]: Start isEmpty. Operand 5717 states and 8804 transitions. [2023-11-06 22:41:46,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-11-06 22:41:46,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:46,721 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:46,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:41:46,722 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:46,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:46,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1222667847, now seen corresponding path program 1 times [2023-11-06 22:41:46,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:46,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658718444] [2023-11-06 22:41:46,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:46,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:47,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:47,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:47,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658718444] [2023-11-06 22:41:47,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658718444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:47,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:47,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:41:47,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038043907] [2023-11-06 22:41:47,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:47,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:47,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:47,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:47,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:47,585 INFO L87 Difference]: Start difference. First operand 5717 states and 8804 transitions. Second operand has 5 states, 5 states have (on average 49.4) internal successors, (247), 5 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:49,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:49,504 INFO L93 Difference]: Finished difference Result 16656 states and 25603 transitions. [2023-11-06 22:41:49,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:41:49,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.4) internal successors, (247), 5 states have internal predecessors, (247), 0 states have call successors, (0), 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 247 [2023-11-06 22:41:49,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:49,558 INFO L225 Difference]: With dead ends: 16656 [2023-11-06 22:41:49,559 INFO L226 Difference]: Without dead ends: 10994 [2023-11-06 22:41:49,568 INFO L412 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 [2023-11-06 22:41:49,569 INFO L413 NwaCegarLoop]: 1685 mSDtfsCounter, 3235 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3235 SdHoareTripleChecker+Valid, 2659 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:49,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3235 Valid, 2659 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:41:49,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10994 states. [2023-11-06 22:41:51,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10994 to 10967. [2023-11-06 22:41:51,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10967 states, 10965 states have (on average 1.5270405836753307) internal successors, (16744), 10966 states have internal predecessors, (16744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:51,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10967 states to 10967 states and 16744 transitions. [2023-11-06 22:41:51,479 INFO L78 Accepts]: Start accepts. Automaton has 10967 states and 16744 transitions. Word has length 247 [2023-11-06 22:41:51,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:51,480 INFO L495 AbstractCegarLoop]: Abstraction has 10967 states and 16744 transitions. [2023-11-06 22:41:51,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.4) internal successors, (247), 5 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:51,481 INFO L276 IsEmpty]: Start isEmpty. Operand 10967 states and 16744 transitions. [2023-11-06 22:41:51,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-11-06 22:41:51,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:51,501 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:51,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:41:51,502 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:51,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:51,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1280969416, now seen corresponding path program 1 times [2023-11-06 22:41:51,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:51,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123710478] [2023-11-06 22:41:51,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:51,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:52,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:52,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:52,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123710478] [2023-11-06 22:41:52,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123710478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:52,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:52,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:41:52,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779181917] [2023-11-06 22:41:52,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:52,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:52,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:52,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:52,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:52,112 INFO L87 Difference]: Start difference. First operand 10967 states and 16744 transitions. Second operand has 5 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:55,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:55,026 INFO L93 Difference]: Finished difference Result 31753 states and 48383 transitions. [2023-11-06 22:41:55,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:41:55,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 0 states have call successors, (0), 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 249 [2023-11-06 22:41:55,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:55,081 INFO L225 Difference]: With dead ends: 31753 [2023-11-06 22:41:55,081 INFO L226 Difference]: Without dead ends: 20903 [2023-11-06 22:41:55,098 INFO L412 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 [2023-11-06 22:41:55,099 INFO L413 NwaCegarLoop]: 1679 mSDtfsCounter, 1980 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1980 SdHoareTripleChecker+Valid, 3627 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:55,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1980 Valid, 3627 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:41:55,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20903 states. [2023-11-06 22:41:58,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20903 to 20885. [2023-11-06 22:41:58,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20885 states, 20883 states have (on average 1.5133840923239) internal successors, (31604), 20884 states have internal predecessors, (31604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:58,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20885 states to 20885 states and 31604 transitions. [2023-11-06 22:41:58,115 INFO L78 Accepts]: Start accepts. Automaton has 20885 states and 31604 transitions. Word has length 249 [2023-11-06 22:41:58,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:58,115 INFO L495 AbstractCegarLoop]: Abstraction has 20885 states and 31604 transitions. [2023-11-06 22:41:58,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:58,116 INFO L276 IsEmpty]: Start isEmpty. Operand 20885 states and 31604 transitions. [2023-11-06 22:41:58,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-11-06 22:41:58,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:58,152 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:58,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:41:58,153 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:58,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:58,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1753737179, now seen corresponding path program 1 times [2023-11-06 22:41:58,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:58,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285606076] [2023-11-06 22:41:58,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:58,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:58,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:58,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:58,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285606076] [2023-11-06 22:41:58,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285606076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:58,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:58,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:41:58,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641009398] [2023-11-06 22:41:58,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:58,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:41:58,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:58,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:41:58,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:41:58,766 INFO L87 Difference]: Start difference. First operand 20885 states and 31604 transitions. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:04,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:04,275 INFO L93 Difference]: Finished difference Result 61441 states and 92817 transitions. [2023-11-06 22:42:04,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:42:04,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 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 249 [2023-11-06 22:42:04,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:04,390 INFO L225 Difference]: With dead ends: 61441 [2023-11-06 22:42:04,391 INFO L226 Difference]: Without dead ends: 40786 [2023-11-06 22:42:04,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:42:04,420 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 2292 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2292 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:04,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2292 Valid, 2548 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:42:04,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40786 states. [2023-11-06 22:42:10,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40786 to 40617. [2023-11-06 22:42:10,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40617 states, 40615 states have (on average 1.501612704665764) internal successors, (60988), 40616 states have internal predecessors, (60988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:10,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40617 states to 40617 states and 60988 transitions. [2023-11-06 22:42:10,348 INFO L78 Accepts]: Start accepts. Automaton has 40617 states and 60988 transitions. Word has length 249 [2023-11-06 22:42:10,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:10,349 INFO L495 AbstractCegarLoop]: Abstraction has 40617 states and 60988 transitions. [2023-11-06 22:42:10,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:10,350 INFO L276 IsEmpty]: Start isEmpty. Operand 40617 states and 60988 transitions. [2023-11-06 22:42:10,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-11-06 22:42:10,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:10,419 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:10,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:42:10,423 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:10,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:10,424 INFO L85 PathProgramCache]: Analyzing trace with hash 180168292, now seen corresponding path program 1 times [2023-11-06 22:42:10,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:10,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539657458] [2023-11-06 22:42:10,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:10,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:10,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:10,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539657458] [2023-11-06 22:42:10,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539657458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:10,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:10,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:42:10,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944772420] [2023-11-06 22:42:10,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:10,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:42:10,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:10,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:42:10,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:10,606 INFO L87 Difference]: Start difference. First operand 40617 states and 60988 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:21,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:21,161 INFO L93 Difference]: Finished difference Result 118827 states and 177916 transitions. [2023-11-06 22:42:21,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:42:21,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 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 251 [2023-11-06 22:42:21,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:21,336 INFO L225 Difference]: With dead ends: 118827 [2023-11-06 22:42:21,336 INFO L226 Difference]: Without dead ends: 79590 [2023-11-06 22:42:21,386 INFO L412 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 [2023-11-06 22:42:21,387 INFO L413 NwaCegarLoop]: 1970 mSDtfsCounter, 873 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:21,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 2957 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:42:21,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79590 states.