./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cab54f-21f8-4296-ba06-b6bb60857358/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cab54f-21f8-4296-ba06-b6bb60857358/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_57cab54f-21f8-4296-ba06-b6bb60857358/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cab54f-21f8-4296-ba06-b6bb60857358/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cab54f-21f8-4296-ba06-b6bb60857358/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_57cab54f-21f8-4296-ba06-b6bb60857358/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 958ad7cbd67a25f08fdfb008e82df18bba1cce7737ba27f2fb1a13f2299466c1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:41:37,336 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:41:37,453 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cab54f-21f8-4296-ba06-b6bb60857358/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:41:37,461 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:41:37,462 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:41:37,496 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:41:37,497 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:41:37,498 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:41:37,499 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:41:37,500 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:41:37,501 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:41:37,502 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:41:37,503 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:41:37,504 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:41:37,505 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:41:37,505 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:41:37,506 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:41:37,507 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:41:37,507 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:41:37,508 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:41:37,508 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:41:37,509 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:41:37,510 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:41:37,510 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:41:37,511 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:41:37,512 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:41:37,512 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:41:37,513 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:41:37,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:41:37,514 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:41:37,514 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:41:37,515 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:41:37,515 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:41:37,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:41:37,516 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:41:37,517 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:41:37,517 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:41:37,517 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:41:37,517 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:41:37,518 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_57cab54f-21f8-4296-ba06-b6bb60857358/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cab54f-21f8-4296-ba06-b6bb60857358/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 958ad7cbd67a25f08fdfb008e82df18bba1cce7737ba27f2fb1a13f2299466c1 [2023-11-06 22:41:37,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:41:37,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:41:37,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:41:37,907 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:41:37,908 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:41:37,910 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cab54f-21f8-4296-ba06-b6bb60857358/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-11-06 22:41:41,744 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:41:42,055 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:41:42,055 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cab54f-21f8-4296-ba06-b6bb60857358/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-11-06 22:41:42,072 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cab54f-21f8-4296-ba06-b6bb60857358/bin/uautomizer-verify-WvqO1wxjHP/data/150f37dbf/f365e5681bab4e1091306374393910ef/FLAG78ea13d68 [2023-11-06 22:41:42,104 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cab54f-21f8-4296-ba06-b6bb60857358/bin/uautomizer-verify-WvqO1wxjHP/data/150f37dbf/f365e5681bab4e1091306374393910ef [2023-11-06 22:41:42,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:41:42,118 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:41:42,123 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:41:42,123 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:41:42,130 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:41:42,131 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:41:42" (1/1) ... [2023-11-06 22:41:42,133 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2606c3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:42, skipping insertion in model container [2023-11-06 22:41:42,133 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:41:42" (1/1) ... [2023-11-06 22:41:42,220 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:41:42,602 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_57cab54f-21f8-4296-ba06-b6bb60857358/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7920,7933] [2023-11-06 22:41:42,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:41:42,691 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:41:42,757 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_57cab54f-21f8-4296-ba06-b6bb60857358/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7920,7933] [2023-11-06 22:41:42,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:41:42,820 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:41:42,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:42 WrapperNode [2023-11-06 22:41:42,822 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:41:42,823 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:41:42,823 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:41:42,824 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:41:42,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:42" (1/1) ... [2023-11-06 22:41:42,861 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:42" (1/1) ... [2023-11-06 22:41:42,932 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 676 [2023-11-06 22:41:42,933 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:41:42,933 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:41:42,934 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:41:42,934 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:41:42,943 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:42" (1/1) ... [2023-11-06 22:41:42,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:42" (1/1) ... [2023-11-06 22:41:42,948 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:42" (1/1) ... [2023-11-06 22:41:42,949 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:42" (1/1) ... [2023-11-06 22:41:42,967 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:42" (1/1) ... [2023-11-06 22:41:42,975 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:42" (1/1) ... [2023-11-06 22:41:42,982 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:42" (1/1) ... [2023-11-06 22:41:42,986 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:42" (1/1) ... [2023-11-06 22:41:42,995 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:41:42,996 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:41:42,997 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:41:42,997 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:41:42,998 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:42" (1/1) ... [2023-11-06 22:41:43,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:41:43,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cab54f-21f8-4296-ba06-b6bb60857358/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:43,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cab54f-21f8-4296-ba06-b6bb60857358/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:41:43,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cab54f-21f8-4296-ba06-b6bb60857358/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:41:43,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:41:43,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:41:43,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:41:43,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:41:43,298 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:41:43,300 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:41:44,165 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:41:44,175 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:41:44,175 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:41:44,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:41:44 BoogieIcfgContainer [2023-11-06 22:41:44,182 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:41:44,187 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:41:44,187 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:41:44,191 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:41:44,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:41:42" (1/3) ... [2023-11-06 22:41:44,193 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3800a4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:41:44, skipping insertion in model container [2023-11-06 22:41:44,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:42" (2/3) ... [2023-11-06 22:41:44,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3800a4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:41:44, skipping insertion in model container [2023-11-06 22:41:44,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:41:44" (3/3) ... [2023-11-06 22:41:44,197 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-11-06 22:41:44,228 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:41:44,228 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:41:44,291 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:41:44,299 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;@13d192a2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:41:44,300 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:41:44,306 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 153 states have (on average 1.7450980392156863) internal successors, (267), 160 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:44,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-06 22:41:44,319 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:44,320 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] [2023-11-06 22:41:44,321 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:44,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:44,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1975649421, now seen corresponding path program 1 times [2023-11-06 22:41:44,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:44,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699887119] [2023-11-06 22:41:44,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:44,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:44,964 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 22:41:44,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:44,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699887119] [2023-11-06 22:41:44,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699887119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:44,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:44,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:44,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220805679] [2023-11-06 22:41:44,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:44,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:44,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:45,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:45,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:45,018 INFO L87 Difference]: Start difference. First operand has 161 states, 153 states have (on average 1.7450980392156863) internal successors, (267), 160 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:45,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:45,193 INFO L93 Difference]: Finished difference Result 345 states and 551 transitions. [2023-11-06 22:41:45,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:45,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-11-06 22:41:45,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:45,213 INFO L225 Difference]: With dead ends: 345 [2023-11-06 22:41:45,214 INFO L226 Difference]: Without dead ends: 224 [2023-11-06 22:41:45,218 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 22:41:45,222 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 157 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:45,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 440 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:41:45,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-06 22:41:45,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 221. [2023-11-06 22:41:45,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.5136363636363637) internal successors, (333), 220 states have internal predecessors, (333), 0 states have call successors, (0), 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 22:41:45,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 333 transitions. [2023-11-06 22:41:45,295 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 333 transitions. Word has length 62 [2023-11-06 22:41:45,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:45,296 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 333 transitions. [2023-11-06 22:41:45,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:45,297 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 333 transitions. [2023-11-06 22:41:45,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-06 22:41:45,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:45,304 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] [2023-11-06 22:41:45,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:41:45,305 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:45,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:45,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1826541876, now seen corresponding path program 1 times [2023-11-06 22:41:45,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:45,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413494994] [2023-11-06 22:41:45,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:45,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:45,640 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 22:41:45,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:45,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413494994] [2023-11-06 22:41:45,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413494994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:45,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:45,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:45,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871779948] [2023-11-06 22:41:45,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:45,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:45,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:45,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:45,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:45,646 INFO L87 Difference]: Start difference. First operand 221 states and 333 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:45,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:45,753 INFO L93 Difference]: Finished difference Result 533 states and 821 transitions. [2023-11-06 22:41:45,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:45,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-06 22:41:45,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:45,759 INFO L225 Difference]: With dead ends: 533 [2023-11-06 22:41:45,759 INFO L226 Difference]: Without dead ends: 369 [2023-11-06 22:41:45,761 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 22:41:45,763 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 125 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:45,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 414 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:41:45,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-11-06 22:41:45,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 365. [2023-11-06 22:41:45,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.5274725274725274) internal successors, (556), 364 states have internal predecessors, (556), 0 states have call successors, (0), 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 22:41:45,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 556 transitions. [2023-11-06 22:41:45,849 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 556 transitions. Word has length 64 [2023-11-06 22:41:45,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:45,850 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 556 transitions. [2023-11-06 22:41:45,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:45,851 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 556 transitions. [2023-11-06 22:41:45,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-06 22:41:45,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:45,856 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] [2023-11-06 22:41:45,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:41:45,857 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:45,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:45,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1385775307, now seen corresponding path program 1 times [2023-11-06 22:41:45,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:45,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418602600] [2023-11-06 22:41:45,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:45,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:46,042 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 22:41:46,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:46,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418602600] [2023-11-06 22:41:46,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418602600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:46,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:46,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:46,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081815228] [2023-11-06 22:41:46,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:46,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:46,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:46,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:46,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:46,051 INFO L87 Difference]: Start difference. First operand 365 states and 556 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:46,173 INFO L93 Difference]: Finished difference Result 949 states and 1462 transitions. [2023-11-06 22:41:46,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:46,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-06 22:41:46,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:46,183 INFO L225 Difference]: With dead ends: 949 [2023-11-06 22:41:46,183 INFO L226 Difference]: Without dead ends: 641 [2023-11-06 22:41:46,191 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 22:41:46,193 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 119 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:46,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 415 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:41:46,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-11-06 22:41:46,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 635. [2023-11-06 22:41:46,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.526813880126183) internal successors, (968), 634 states have internal predecessors, (968), 0 states have call successors, (0), 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 22:41:46,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 968 transitions. [2023-11-06 22:41:46,342 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 968 transitions. Word has length 66 [2023-11-06 22:41:46,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:46,347 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 968 transitions. [2023-11-06 22:41:46,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,348 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 968 transitions. [2023-11-06 22:41:46,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 22:41:46,363 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:46,365 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] [2023-11-06 22:41:46,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:41:46,366 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:46,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:46,369 INFO L85 PathProgramCache]: Analyzing trace with hash -190660810, now seen corresponding path program 1 times [2023-11-06 22:41:46,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:46,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274277579] [2023-11-06 22:41:46,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:46,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:46,689 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 22:41:46,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:46,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274277579] [2023-11-06 22:41:46,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274277579] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:46,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:46,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:41:46,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323639525] [2023-11-06 22:41:46,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:46,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:46,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:46,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:46,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:46,693 INFO L87 Difference]: Start difference. First operand 635 states and 968 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 22:41:47,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:47,301 INFO L93 Difference]: Finished difference Result 3261 states and 5058 transitions. [2023-11-06 22:41:47,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:41:47,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2023-11-06 22:41:47,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:47,324 INFO L225 Difference]: With dead ends: 3261 [2023-11-06 22:41:47,325 INFO L226 Difference]: Without dead ends: 2673 [2023-11-06 22:41:47,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:41:47,339 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 969 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:47,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 1557 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:41:47,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2673 states. [2023-11-06 22:41:47,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2673 to 1171. [2023-11-06 22:41:47,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1170 states have (on average 1.5452991452991454) internal successors, (1808), 1170 states have internal predecessors, (1808), 0 states have call successors, (0), 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 22:41:47,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1808 transitions. [2023-11-06 22:41:47,635 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1808 transitions. Word has length 68 [2023-11-06 22:41:47,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:47,636 INFO L495 AbstractCegarLoop]: Abstraction has 1171 states and 1808 transitions. [2023-11-06 22:41:47,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 22:41:47,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1808 transitions. [2023-11-06 22:41:47,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-06 22:41:47,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:47,639 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] [2023-11-06 22:41:47,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:41:47,640 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:47,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:47,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1678021987, now seen corresponding path program 1 times [2023-11-06 22:41:47,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:47,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641099294] [2023-11-06 22:41:47,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:47,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:47,833 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 22:41:47,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:47,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641099294] [2023-11-06 22:41:47,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641099294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:47,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:47,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:41:47,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855319153] [2023-11-06 22:41:47,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:47,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:41:47,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:47,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:41:47,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:41:47,839 INFO L87 Difference]: Start difference. First operand 1171 states and 1808 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 22:41:48,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:48,594 INFO L93 Difference]: Finished difference Result 4279 states and 6647 transitions. [2023-11-06 22:41:48,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:41:48,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-11-06 22:41:48,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:48,626 INFO L225 Difference]: With dead ends: 4279 [2023-11-06 22:41:48,626 INFO L226 Difference]: Without dead ends: 3165 [2023-11-06 22:41:48,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:48,634 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 432 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:48,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 777 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:41:48,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3165 states. [2023-11-06 22:41:49,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3165 to 2156. [2023-11-06 22:41:49,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2155 states have (on average 1.5447795823665893) internal successors, (3329), 2155 states have internal predecessors, (3329), 0 states have call successors, (0), 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 22:41:49,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 3329 transitions. [2023-11-06 22:41:49,081 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 3329 transitions. Word has length 69 [2023-11-06 22:41:49,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:49,083 INFO L495 AbstractCegarLoop]: Abstraction has 2156 states and 3329 transitions. [2023-11-06 22:41:49,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 22:41:49,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 3329 transitions. [2023-11-06 22:41:49,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-06 22:41:49,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:49,088 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] [2023-11-06 22:41:49,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:41:49,088 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:49,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:49,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1637619353, now seen corresponding path program 1 times [2023-11-06 22:41:49,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:49,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34164738] [2023-11-06 22:41:49,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:49,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:49,194 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 22:41:49,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:49,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34164738] [2023-11-06 22:41:49,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34164738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:49,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:49,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:49,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666141554] [2023-11-06 22:41:49,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:49,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:49,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:49,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:49,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:49,199 INFO L87 Difference]: Start difference. First operand 2156 states and 3329 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 22:41:49,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:49,756 INFO L93 Difference]: Finished difference Result 5138 states and 7946 transitions. [2023-11-06 22:41:49,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:49,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2023-11-06 22:41:49,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:49,780 INFO L225 Difference]: With dead ends: 5138 [2023-11-06 22:41:49,781 INFO L226 Difference]: Without dead ends: 3039 [2023-11-06 22:41:49,787 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 22:41:49,790 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 130 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:49,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 516 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:41:49,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3039 states. [2023-11-06 22:41:50,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3039 to 3037. [2023-11-06 22:41:50,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3037 states, 3036 states have (on average 1.539855072463768) internal successors, (4675), 3036 states have internal predecessors, (4675), 0 states have call successors, (0), 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 22:41:50,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 4675 transitions. [2023-11-06 22:41:50,390 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 4675 transitions. Word has length 72 [2023-11-06 22:41:50,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:50,392 INFO L495 AbstractCegarLoop]: Abstraction has 3037 states and 4675 transitions. [2023-11-06 22:41:50,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 22:41:50,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 4675 transitions. [2023-11-06 22:41:50,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-06 22:41:50,402 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:50,402 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] [2023-11-06 22:41:50,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:41:50,403 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:50,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:50,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1419254461, now seen corresponding path program 1 times [2023-11-06 22:41:50,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:50,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225114372] [2023-11-06 22:41:50,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:50,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:50,488 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 22:41:50,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:50,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225114372] [2023-11-06 22:41:50,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225114372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:50,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:50,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:50,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682729311] [2023-11-06 22:41:50,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:50,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:50,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:50,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:50,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:50,492 INFO L87 Difference]: Start difference. First operand 3037 states and 4675 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 22:41:51,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:51,211 INFO L93 Difference]: Finished difference Result 5871 states and 9045 transitions. [2023-11-06 22:41:51,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:51,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2023-11-06 22:41:51,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:51,244 INFO L225 Difference]: With dead ends: 5871 [2023-11-06 22:41:51,245 INFO L226 Difference]: Without dead ends: 4188 [2023-11-06 22:41:51,248 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 22:41:51,250 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 118 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:51,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 458 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:41:51,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4188 states. [2023-11-06 22:41:51,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4188 to 4186. [2023-11-06 22:41:51,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4186 states, 4185 states have (on average 1.5261648745519714) internal successors, (6387), 4185 states have internal predecessors, (6387), 0 states have call successors, (0), 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 22:41:51,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4186 states to 4186 states and 6387 transitions. [2023-11-06 22:41:51,962 INFO L78 Accepts]: Start accepts. Automaton has 4186 states and 6387 transitions. Word has length 72 [2023-11-06 22:41:51,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:51,963 INFO L495 AbstractCegarLoop]: Abstraction has 4186 states and 6387 transitions. [2023-11-06 22:41:51,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 22:41:51,963 INFO L276 IsEmpty]: Start isEmpty. Operand 4186 states and 6387 transitions. [2023-11-06 22:41:51,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-06 22:41:51,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:51,971 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] [2023-11-06 22:41:51,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:41:51,971 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:51,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:51,972 INFO L85 PathProgramCache]: Analyzing trace with hash 569279253, now seen corresponding path program 1 times [2023-11-06 22:41:51,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:51,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422674767] [2023-11-06 22:41:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:51,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:52,075 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 22:41:52,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:52,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422674767] [2023-11-06 22:41:52,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422674767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:52,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:52,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:52,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700694165] [2023-11-06 22:41:52,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:52,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:52,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:52,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:52,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:52,080 INFO L87 Difference]: Start difference. First operand 4186 states and 6387 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 22:41:53,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:53,193 INFO L93 Difference]: Finished difference Result 7892 states and 12047 transitions. [2023-11-06 22:41:53,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:53,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2023-11-06 22:41:53,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:53,237 INFO L225 Difference]: With dead ends: 7892 [2023-11-06 22:41:53,238 INFO L226 Difference]: Without dead ends: 5592 [2023-11-06 22:41:53,243 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 22:41:53,245 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 124 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:53,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 498 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:41:53,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5592 states. [2023-11-06 22:41:54,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5592 to 5590. [2023-11-06 22:41:54,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5590 states, 5589 states have (on average 1.5097512971909106) internal successors, (8438), 5589 states have internal predecessors, (8438), 0 states have call successors, (0), 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 22:41:54,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5590 states to 5590 states and 8438 transitions. [2023-11-06 22:41:54,296 INFO L78 Accepts]: Start accepts. Automaton has 5590 states and 8438 transitions. Word has length 72 [2023-11-06 22:41:54,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:54,297 INFO L495 AbstractCegarLoop]: Abstraction has 5590 states and 8438 transitions. [2023-11-06 22:41:54,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 22:41:54,297 INFO L276 IsEmpty]: Start isEmpty. Operand 5590 states and 8438 transitions. [2023-11-06 22:41:54,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-06 22:41:54,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:54,299 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] [2023-11-06 22:41:54,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:41:54,299 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:54,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:54,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2071930450, now seen corresponding path program 1 times [2023-11-06 22:41:54,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:54,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9713462] [2023-11-06 22:41:54,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:54,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:54,727 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 22:41:54,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:54,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9713462] [2023-11-06 22:41:54,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9713462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:54,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:54,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:41:54,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240310572] [2023-11-06 22:41:54,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:54,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:54,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:54,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:54,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:54,732 INFO L87 Difference]: Start difference. First operand 5590 states and 8438 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:56,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:56,938 INFO L93 Difference]: Finished difference Result 9879 states and 14847 transitions. [2023-11-06 22:41:56,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:41:56,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-06 22:41:56,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:56,994 INFO L225 Difference]: With dead ends: 9879 [2023-11-06 22:41:56,994 INFO L226 Difference]: Without dead ends: 9877 [2023-11-06 22:41:56,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:41:56,998 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 278 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:56,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 1069 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:41:57,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9877 states. [2023-11-06 22:41:57,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9877 to 5712. [2023-11-06 22:41:57,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5712 states, 5711 states have (on average 1.4941341271230957) internal successors, (8533), 5711 states have internal predecessors, (8533), 0 states have call successors, (0), 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 22:41:57,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5712 states to 5712 states and 8533 transitions. [2023-11-06 22:41:57,999 INFO L78 Accepts]: Start accepts. Automaton has 5712 states and 8533 transitions. Word has length 77 [2023-11-06 22:41:57,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:57,999 INFO L495 AbstractCegarLoop]: Abstraction has 5712 states and 8533 transitions. [2023-11-06 22:41:58,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:58,000 INFO L276 IsEmpty]: Start isEmpty. Operand 5712 states and 8533 transitions. [2023-11-06 22:41:58,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-06 22:41:58,002 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:58,003 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:58,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:41:58,003 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:58,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:58,004 INFO L85 PathProgramCache]: Analyzing trace with hash 555059603, now seen corresponding path program 1 times [2023-11-06 22:41:58,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:58,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589655908] [2023-11-06 22:41:58,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:58,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:58,218 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:41:58,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:58,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589655908] [2023-11-06 22:41:58,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589655908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:58,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:58,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:41:58,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068189889] [2023-11-06 22:41:58,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:58,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:58,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:58,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:58,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:58,221 INFO L87 Difference]: Start difference. First operand 5712 states and 8533 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:01,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:01,348 INFO L93 Difference]: Finished difference Result 16502 states and 24682 transitions. [2023-11-06 22:42:01,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:42:01,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-11-06 22:42:01,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:01,390 INFO L225 Difference]: With dead ends: 16502 [2023-11-06 22:42:01,391 INFO L226 Difference]: Without dead ends: 13566 [2023-11-06 22:42:01,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:42:01,403 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 543 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:01,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1027 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:42:01,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13566 states. [2023-11-06 22:42:02,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13566 to 9572. [2023-11-06 22:42:02,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9572 states, 9571 states have (on average 1.4903353881517083) internal successors, (14264), 9571 states have internal predecessors, (14264), 0 states have call successors, (0), 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 22:42:02,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9572 states to 9572 states and 14264 transitions. [2023-11-06 22:42:02,866 INFO L78 Accepts]: Start accepts. Automaton has 9572 states and 14264 transitions. Word has length 103 [2023-11-06 22:42:02,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:02,866 INFO L495 AbstractCegarLoop]: Abstraction has 9572 states and 14264 transitions. [2023-11-06 22:42:02,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:02,867 INFO L276 IsEmpty]: Start isEmpty. Operand 9572 states and 14264 transitions. [2023-11-06 22:42:02,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-06 22:42:02,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:02,870 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:02,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:42:02,870 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:02,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:02,871 INFO L85 PathProgramCache]: Analyzing trace with hash 773424495, now seen corresponding path program 1 times [2023-11-06 22:42:02,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:02,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601814735] [2023-11-06 22:42:02,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:02,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:03,056 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-06 22:42:03,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:03,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601814735] [2023-11-06 22:42:03,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601814735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:03,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:03,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:42:03,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230970731] [2023-11-06 22:42:03,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:03,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:42:03,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:03,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:42:03,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:42:03,060 INFO L87 Difference]: Start difference. First operand 9572 states and 14264 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:05,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:05,927 INFO L93 Difference]: Finished difference Result 19878 states and 29740 transitions. [2023-11-06 22:42:05,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:42:05,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-11-06 22:42:05,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:05,986 INFO L225 Difference]: With dead ends: 19878 [2023-11-06 22:42:05,986 INFO L226 Difference]: Without dead ends: 16090 [2023-11-06 22:42:05,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:42:05,998 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 554 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:05,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 1015 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:42:06,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16090 states. [2023-11-06 22:42:08,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16090 to 13900. [2023-11-06 22:42:08,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13900 states, 13899 states have (on average 1.4888121447586158) internal successors, (20693), 13899 states have internal predecessors, (20693), 0 states have call successors, (0), 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 22:42:08,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13900 states to 13900 states and 20693 transitions. [2023-11-06 22:42:08,375 INFO L78 Accepts]: Start accepts. Automaton has 13900 states and 20693 transitions. Word has length 103 [2023-11-06 22:42:08,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:08,375 INFO L495 AbstractCegarLoop]: Abstraction has 13900 states and 20693 transitions. [2023-11-06 22:42:08,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:08,377 INFO L276 IsEmpty]: Start isEmpty. Operand 13900 states and 20693 transitions. [2023-11-06 22:42:08,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-06 22:42:08,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:08,379 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:08,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:42:08,380 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:08,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:08,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1533009087, now seen corresponding path program 1 times [2023-11-06 22:42:08,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:08,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271970011] [2023-11-06 22:42:08,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:08,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:08,566 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:42:08,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:08,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271970011] [2023-11-06 22:42:08,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271970011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:08,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:08,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:42:08,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842422842] [2023-11-06 22:42:08,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:08,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:42:08,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:08,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:42:08,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:42:08,570 INFO L87 Difference]: Start difference. First operand 13900 states and 20693 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:11,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:11,409 INFO L93 Difference]: Finished difference Result 22030 states and 32941 transitions. [2023-11-06 22:42:11,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:42:11,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-11-06 22:42:11,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:11,461 INFO L225 Difference]: With dead ends: 22030 [2023-11-06 22:42:11,461 INFO L226 Difference]: Without dead ends: 18242 [2023-11-06 22:42:11,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:42:11,473 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 549 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:11,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 1122 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:42:11,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18242 states. [2023-11-06 22:42:14,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18242 to 16716. [2023-11-06 22:42:14,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16716 states, 16715 states have (on average 1.4890816631767874) internal successors, (24890), 16715 states have internal predecessors, (24890), 0 states have call successors, (0), 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 22:42:14,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16716 states to 16716 states and 24890 transitions. [2023-11-06 22:42:14,243 INFO L78 Accepts]: Start accepts. Automaton has 16716 states and 24890 transitions. Word has length 103 [2023-11-06 22:42:14,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:14,243 INFO L495 AbstractCegarLoop]: Abstraction has 16716 states and 24890 transitions. [2023-11-06 22:42:14,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:14,244 INFO L276 IsEmpty]: Start isEmpty. Operand 16716 states and 24890 transitions. [2023-11-06 22:42:14,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-06 22:42:14,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:14,247 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:14,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:42:14,248 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:14,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:14,248 INFO L85 PathProgramCache]: Analyzing trace with hash -35525664, now seen corresponding path program 1 times [2023-11-06 22:42:14,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:14,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305980248] [2023-11-06 22:42:14,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:14,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:14,434 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:42:14,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:14,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305980248] [2023-11-06 22:42:14,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305980248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:14,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:14,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:42:14,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263721892] [2023-11-06 22:42:14,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:14,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:42:14,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:14,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:42:14,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:42:14,438 INFO L87 Difference]: Start difference. First operand 16716 states and 24890 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:17,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:17,274 INFO L93 Difference]: Finished difference Result 27607 states and 41280 transitions. [2023-11-06 22:42:17,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:42:17,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-11-06 22:42:17,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:17,333 INFO L225 Difference]: With dead ends: 27607 [2023-11-06 22:42:17,333 INFO L226 Difference]: Without dead ends: 22087 [2023-11-06 22:42:17,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:42:17,348 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 241 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:17,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 786 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:42:17,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22087 states. [2023-11-06 22:42:19,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22087 to 20433. [2023-11-06 22:42:19,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20433 states, 20432 states have (on average 1.4873238057948317) internal successors, (30389), 20432 states have internal predecessors, (30389), 0 states have call successors, (0), 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 22:42:19,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20433 states to 20433 states and 30389 transitions. [2023-11-06 22:42:19,944 INFO L78 Accepts]: Start accepts. Automaton has 20433 states and 30389 transitions. Word has length 104 [2023-11-06 22:42:19,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:19,944 INFO L495 AbstractCegarLoop]: Abstraction has 20433 states and 30389 transitions. [2023-11-06 22:42:19,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:19,945 INFO L276 IsEmpty]: Start isEmpty. Operand 20433 states and 30389 transitions. [2023-11-06 22:42:19,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-06 22:42:19,948 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:19,948 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:19,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:42:19,948 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:19,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:19,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1812785472, now seen corresponding path program 1 times [2023-11-06 22:42:19,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:19,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979034607] [2023-11-06 22:42:19,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:19,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:20,040 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:42:20,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:20,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979034607] [2023-11-06 22:42:20,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979034607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:20,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:20,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:42:20,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998690611] [2023-11-06 22:42:20,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:20,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:42:20,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:20,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:42:20,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:20,043 INFO L87 Difference]: Start difference. First operand 20433 states and 30389 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:25,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:25,682 INFO L93 Difference]: Finished difference Result 46295 states and 68946 transitions. [2023-11-06 22:42:25,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:42:25,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-11-06 22:42:25,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:25,758 INFO L225 Difference]: With dead ends: 46295 [2023-11-06 22:42:25,758 INFO L226 Difference]: Without dead ends: 35423 [2023-11-06 22:42:25,780 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 22:42:25,781 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 109 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:25,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 410 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:42:25,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35423 states. [2023-11-06 22:42:31,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35423 to 35354. [2023-11-06 22:42:31,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35354 states, 35353 states have (on average 1.4844567646310072) internal successors, (52480), 35353 states have internal predecessors, (52480), 0 states have call successors, (0), 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 22:42:31,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35354 states to 35354 states and 52480 transitions. [2023-11-06 22:42:31,243 INFO L78 Accepts]: Start accepts. Automaton has 35354 states and 52480 transitions. Word has length 104 [2023-11-06 22:42:31,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:31,243 INFO L495 AbstractCegarLoop]: Abstraction has 35354 states and 52480 transitions. [2023-11-06 22:42:31,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:31,244 INFO L276 IsEmpty]: Start isEmpty. Operand 35354 states and 52480 transitions. [2023-11-06 22:42:31,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-06 22:42:31,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:31,247 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:31,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:42:31,248 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:31,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:31,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1057251553, now seen corresponding path program 1 times [2023-11-06 22:42:31,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:31,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711183789] [2023-11-06 22:42:31,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:31,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:31,348 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:31,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:31,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711183789] [2023-11-06 22:42:31,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711183789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:31,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:31,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:42:31,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865998980] [2023-11-06 22:42:31,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:31,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:42:31,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:31,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:42:31,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:31,352 INFO L87 Difference]: Start difference. First operand 35354 states and 52480 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:43,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:43,988 INFO L93 Difference]: Finished difference Result 103633 states and 153479 transitions. [2023-11-06 22:42:43,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:42:43,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2023-11-06 22:42:43,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:44,105 INFO L225 Difference]: With dead ends: 103633 [2023-11-06 22:42:44,106 INFO L226 Difference]: Without dead ends: 68370 [2023-11-06 22:42:44,155 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 22:42:44,156 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 170 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:44,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 545 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:42:44,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68370 states. [2023-11-06 22:42:53,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68370 to 68368. [2023-11-06 22:42:53,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68368 states, 68367 states have (on average 1.469568651542411) internal successors, (100470), 68367 states have internal predecessors, (100470), 0 states have call successors, (0), 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 22:42:54,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68368 states to 68368 states and 100470 transitions. [2023-11-06 22:42:54,133 INFO L78 Accepts]: Start accepts. Automaton has 68368 states and 100470 transitions. Word has length 105 [2023-11-06 22:42:54,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:54,133 INFO L495 AbstractCegarLoop]: Abstraction has 68368 states and 100470 transitions. [2023-11-06 22:42:54,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:54,134 INFO L276 IsEmpty]: Start isEmpty. Operand 68368 states and 100470 transitions. [2023-11-06 22:42:54,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-06 22:42:54,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:54,138 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:54,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:42:54,139 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:54,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:54,140 INFO L85 PathProgramCache]: Analyzing trace with hash 735650069, now seen corresponding path program 1 times [2023-11-06 22:42:54,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:54,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405478812] [2023-11-06 22:42:54,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:54,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:54,214 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:54,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:54,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405478812] [2023-11-06 22:42:54,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405478812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:54,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:54,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:42:54,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075410549] [2023-11-06 22:42:54,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:54,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:42:54,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:54,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:42:54,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:54,216 INFO L87 Difference]: Start difference. First operand 68368 states and 100470 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)