./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_43bbb801-593a-4bd9-bc61-f6a0ad032e20/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43bbb801-593a-4bd9-bc61-f6a0ad032e20/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43bbb801-593a-4bd9-bc61-f6a0ad032e20/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43bbb801-593a-4bd9-bc61-f6a0ad032e20/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43bbb801-593a-4bd9-bc61-f6a0ad032e20/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43bbb801-593a-4bd9-bc61-f6a0ad032e20/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 025025ef74b1493ac4064064509ff34d15f77bc18ba9a65b0d0237e8c59a21c9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:07:55,127 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:07:55,246 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43bbb801-593a-4bd9-bc61-f6a0ad032e20/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:07:55,257 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:07:55,258 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:07:55,295 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:07:55,297 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:07:55,298 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:07:55,299 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:07:55,304 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:07:55,305 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:07:55,305 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:07:55,306 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:07:55,308 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:07:55,308 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:07:55,309 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:07:55,309 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:07:55,310 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:07:55,310 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:07:55,311 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:07:55,311 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:07:55,312 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:07:55,313 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:07:55,313 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:07:55,313 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:07:55,314 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:07:55,315 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:07:55,315 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:07:55,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:07:55,317 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:07:55,318 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:07:55,318 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:07:55,319 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:07:55,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:07:55,319 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:07:55,320 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:07:55,320 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:07:55,320 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:07:55,321 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:07:55,321 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_43bbb801-593a-4bd9-bc61-f6a0ad032e20/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43bbb801-593a-4bd9-bc61-f6a0ad032e20/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 025025ef74b1493ac4064064509ff34d15f77bc18ba9a65b0d0237e8c59a21c9 [2023-11-12 02:07:55,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:07:55,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:07:55,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:07:55,679 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:07:55,680 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:07:55,682 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43bbb801-593a-4bd9-bc61-f6a0ad032e20/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c [2023-11-12 02:07:59,013 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:07:59,244 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:07:59,245 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43bbb801-593a-4bd9-bc61-f6a0ad032e20/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c [2023-11-12 02:07:59,258 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43bbb801-593a-4bd9-bc61-f6a0ad032e20/bin/uautomizer-verify-uTZkv6EMXl/data/d79c7e354/895c7beafeb04973b57c91a83ad43245/FLAG3a693bdf3 [2023-11-12 02:07:59,273 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43bbb801-593a-4bd9-bc61-f6a0ad032e20/bin/uautomizer-verify-uTZkv6EMXl/data/d79c7e354/895c7beafeb04973b57c91a83ad43245 [2023-11-12 02:07:59,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:07:59,278 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:07:59,280 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:07:59,280 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:07:59,286 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:07:59,287 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e5db3da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59, skipping insertion in model container [2023-11-12 02:07:59,288 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,333 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:07:59,619 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_43bbb801-593a-4bd9-bc61-f6a0ad032e20/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c[12779,12792] [2023-11-12 02:07:59,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:07:59,641 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:07:59,705 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_43bbb801-593a-4bd9-bc61-f6a0ad032e20/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c[12779,12792] [2023-11-12 02:07:59,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:07:59,725 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:07:59,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59 WrapperNode [2023-11-12 02:07:59,726 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:07:59,727 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:07:59,727 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:07:59,727 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:07:59,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,746 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,785 INFO L138 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 373 [2023-11-12 02:07:59,785 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:07:59,786 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:07:59,787 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:07:59,787 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:07:59,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,803 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,803 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,814 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,820 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,823 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,826 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,832 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:07:59,833 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:07:59,833 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:07:59,833 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:07:59,834 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:07:59,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43bbb801-593a-4bd9-bc61-f6a0ad032e20/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:59,874 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43bbb801-593a-4bd9-bc61-f6a0ad032e20/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:07:59,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43bbb801-593a-4bd9-bc61-f6a0ad032e20/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:07:59,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:07:59,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:07:59,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:07:59,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:08:00,045 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:08:00,047 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:08:00,656 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:08:00,664 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:08:00,664 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:08:00,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:08:00 BoogieIcfgContainer [2023-11-12 02:08:00,667 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:08:00,669 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:08:00,669 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:08:00,673 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:08:00,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:07:59" (1/3) ... [2023-11-12 02:08:00,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e7a18b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:08:00, skipping insertion in model container [2023-11-12 02:08:00,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (2/3) ... [2023-11-12 02:08:00,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e7a18b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:08:00, skipping insertion in model container [2023-11-12 02:08:00,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:08:00" (3/3) ... [2023-11-12 02:08:00,676 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c [2023-11-12 02:08:00,700 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:08:00,700 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:08:00,775 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:08:00,784 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4b2a5f07, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:08:00,784 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:08:00,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 102 states have (on average 1.7450980392156863) internal successors, (178), 103 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:00,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-12 02:08:00,797 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:00,798 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] [2023-11-12 02:08:00,798 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:00,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:00,804 INFO L85 PathProgramCache]: Analyzing trace with hash -466507300, now seen corresponding path program 1 times [2023-11-12 02:08:00,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:00,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758295198] [2023-11-12 02:08:00,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:00,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:01,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:01,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:01,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758295198] [2023-11-12 02:08:01,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758295198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:01,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:01,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:08:01,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063222992] [2023-11-12 02:08:01,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:01,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:08:01,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:01,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:08:01,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:08:01,114 INFO L87 Difference]: Start difference. First operand has 104 states, 102 states have (on average 1.7450980392156863) internal successors, (178), 103 states have internal predecessors, (178), 0 states have call successors, (0), 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 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:01,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:01,141 INFO L93 Difference]: Finished difference Result 167 states and 283 transitions. [2023-11-12 02:08:01,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:08:01,143 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-11-12 02:08:01,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:01,153 INFO L225 Difference]: With dead ends: 167 [2023-11-12 02:08:01,153 INFO L226 Difference]: Without dead ends: 100 [2023-11-12 02:08:01,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:08:01,160 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:01,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:08:01,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-12 02:08:01,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-11-12 02:08:01,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.7272727272727273) internal successors, (171), 99 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:01,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 171 transitions. [2023-11-12 02:08:01,202 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 171 transitions. Word has length 33 [2023-11-12 02:08:01,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:01,203 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 171 transitions. [2023-11-12 02:08:01,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:01,203 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 171 transitions. [2023-11-12 02:08:01,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-12 02:08:01,205 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:01,205 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] [2023-11-12 02:08:01,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:08:01,206 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:01,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:01,207 INFO L85 PathProgramCache]: Analyzing trace with hash -975980390, now seen corresponding path program 1 times [2023-11-12 02:08:01,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:01,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703980175] [2023-11-12 02:08:01,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:01,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:01,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:01,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:01,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703980175] [2023-11-12 02:08:01,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703980175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:01,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:01,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:08:01,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794902265] [2023-11-12 02:08:01,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:01,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:08:01,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:01,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:08:01,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:08:01,586 INFO L87 Difference]: Start difference. First operand 100 states and 171 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:01,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:01,735 INFO L93 Difference]: Finished difference Result 166 states and 276 transitions. [2023-11-12 02:08:01,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:08:01,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-11-12 02:08:01,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:01,738 INFO L225 Difference]: With dead ends: 166 [2023-11-12 02:08:01,738 INFO L226 Difference]: Without dead ends: 100 [2023-11-12 02:08:01,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:08:01,740 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 2 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:01,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 639 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:01,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-12 02:08:01,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-11-12 02:08:01,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.404040404040404) internal successors, (139), 99 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:01,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 139 transitions. [2023-11-12 02:08:01,751 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 139 transitions. Word has length 33 [2023-11-12 02:08:01,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:01,756 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 139 transitions. [2023-11-12 02:08:01,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:01,757 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 139 transitions. [2023-11-12 02:08:01,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-12 02:08:01,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:01,762 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] [2023-11-12 02:08:01,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:08:01,762 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:01,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:01,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1414656623, now seen corresponding path program 1 times [2023-11-12 02:08:01,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:01,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013642971] [2023-11-12 02:08:01,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:01,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:01,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:01,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013642971] [2023-11-12 02:08:01,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013642971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:01,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:01,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:08:01,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682344939] [2023-11-12 02:08:01,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:01,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:01,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:01,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:01,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:01,976 INFO L87 Difference]: Start difference. First operand 100 states and 139 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) [2023-11-12 02:08:02,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:02,001 INFO L93 Difference]: Finished difference Result 216 states and 327 transitions. [2023-11-12 02:08:02,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:02,002 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 [2023-11-12 02:08:02,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:02,004 INFO L225 Difference]: With dead ends: 216 [2023-11-12 02:08:02,004 INFO L226 Difference]: Without dead ends: 154 [2023-11-12 02:08:02,005 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 [2023-11-12 02:08:02,007 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 77 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 278 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 [2023-11-12 02:08:02,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 278 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:08:02,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-12 02:08:02,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2023-11-12 02:08:02,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.4834437086092715) internal successors, (224), 151 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:02,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 224 transitions. [2023-11-12 02:08:02,023 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 224 transitions. Word has length 64 [2023-11-12 02:08:02,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:02,023 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 224 transitions. [2023-11-12 02:08:02,024 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) [2023-11-12 02:08:02,024 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 224 transitions. [2023-11-12 02:08:02,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-12 02:08:02,026 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:02,026 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] [2023-11-12 02:08:02,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:08:02,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:02,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:02,028 INFO L85 PathProgramCache]: Analyzing trace with hash -402790480, now seen corresponding path program 1 times [2023-11-12 02:08:02,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:02,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682085883] [2023-11-12 02:08:02,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:02,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:02,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:02,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:02,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682085883] [2023-11-12 02:08:02,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682085883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:02,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:02,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:08:02,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829622216] [2023-11-12 02:08:02,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:02,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:08:02,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:02,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:08:02,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:08:02,241 INFO L87 Difference]: Start difference. First operand 152 states and 224 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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) [2023-11-12 02:08:02,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:02,491 INFO L93 Difference]: Finished difference Result 836 states and 1340 transitions. [2023-11-12 02:08:02,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:08:02,493 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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 [2023-11-12 02:08:02,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:02,503 INFO L225 Difference]: With dead ends: 836 [2023-11-12 02:08:02,503 INFO L226 Difference]: Without dead ends: 722 [2023-11-12 02:08:02,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:08:02,517 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 1260 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:02,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1260 Valid, 878 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:02,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2023-11-12 02:08:02,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 264. [2023-11-12 02:08:02,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.5399239543726235) internal successors, (405), 263 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:02,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 405 transitions. [2023-11-12 02:08:02,578 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 405 transitions. Word has length 64 [2023-11-12 02:08:02,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:02,579 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 405 transitions. [2023-11-12 02:08:02,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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) [2023-11-12 02:08:02,580 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 405 transitions. [2023-11-12 02:08:02,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-12 02:08:02,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:02,582 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] [2023-11-12 02:08:02,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:08:02,583 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:02,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:02,584 INFO L85 PathProgramCache]: Analyzing trace with hash 15073731, now seen corresponding path program 1 times [2023-11-12 02:08:02,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:02,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834491094] [2023-11-12 02:08:02,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:02,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:03,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:03,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:03,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834491094] [2023-11-12 02:08:03,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834491094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:03,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:03,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:08:03,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070519028] [2023-11-12 02:08:03,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:03,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:08:03,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:03,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:08:03,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:08:03,064 INFO L87 Difference]: Start difference. First operand 264 states and 405 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:03,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:03,219 INFO L93 Difference]: Finished difference Result 478 states and 752 transitions. [2023-11-12 02:08:03,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:08:03,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-11-12 02:08:03,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:03,225 INFO L225 Difference]: With dead ends: 478 [2023-11-12 02:08:03,225 INFO L226 Difference]: Without dead ends: 476 [2023-11-12 02:08:03,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:08:03,231 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 213 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:03,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1215 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:08:03,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-11-12 02:08:03,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 276. [2023-11-12 02:08:03,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.5163636363636364) internal successors, (417), 275 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:03,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 417 transitions. [2023-11-12 02:08:03,269 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 417 transitions. Word has length 65 [2023-11-12 02:08:03,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:03,271 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 417 transitions. [2023-11-12 02:08:03,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:03,271 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 417 transitions. [2023-11-12 02:08:03,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-12 02:08:03,279 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:03,279 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] [2023-11-12 02:08:03,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:08:03,281 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:03,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:03,281 INFO L85 PathProgramCache]: Analyzing trace with hash 519864296, now seen corresponding path program 1 times [2023-11-12 02:08:03,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:03,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423599184] [2023-11-12 02:08:03,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:03,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:03,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:03,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:03,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423599184] [2023-11-12 02:08:03,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423599184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:03,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:03,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:08:03,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243130365] [2023-11-12 02:08:03,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:03,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:03,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:03,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:03,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:03,422 INFO L87 Difference]: Start difference. First operand 276 states and 417 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) [2023-11-12 02:08:03,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:03,458 INFO L93 Difference]: Finished difference Result 722 states and 1125 transitions. [2023-11-12 02:08:03,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:03,458 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 [2023-11-12 02:08:03,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:03,462 INFO L225 Difference]: With dead ends: 722 [2023-11-12 02:08:03,462 INFO L226 Difference]: Without dead ends: 484 [2023-11-12 02:08:03,464 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 [2023-11-12 02:08:03,466 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 65 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:03,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 232 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:08:03,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2023-11-12 02:08:03,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 478. [2023-11-12 02:08:03,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 477 states have (on average 1.5366876310272537) internal successors, (733), 477 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:03,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 733 transitions. [2023-11-12 02:08:03,500 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 733 transitions. Word has length 66 [2023-11-12 02:08:03,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:03,501 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 733 transitions. [2023-11-12 02:08:03,502 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) [2023-11-12 02:08:03,503 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 733 transitions. [2023-11-12 02:08:03,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-12 02:08:03,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:03,510 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] [2023-11-12 02:08:03,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:08:03,511 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:03,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:03,511 INFO L85 PathProgramCache]: Analyzing trace with hash -2098186532, now seen corresponding path program 1 times [2023-11-12 02:08:03,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:03,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52580933] [2023-11-12 02:08:03,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:03,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:03,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:03,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52580933] [2023-11-12 02:08:03,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52580933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:03,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:03,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:08:03,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263948877] [2023-11-12 02:08:03,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:03,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:03,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:03,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:03,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:03,612 INFO L87 Difference]: Start difference. First operand 478 states and 733 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:03,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:03,660 INFO L93 Difference]: Finished difference Result 1294 states and 2011 transitions. [2023-11-12 02:08:03,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:03,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-12 02:08:03,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:03,666 INFO L225 Difference]: With dead ends: 1294 [2023-11-12 02:08:03,667 INFO L226 Difference]: Without dead ends: 854 [2023-11-12 02:08:03,668 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 [2023-11-12 02:08:03,669 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 73 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 276 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 [2023-11-12 02:08:03,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 276 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:08:03,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2023-11-12 02:08:03,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 852. [2023-11-12 02:08:03,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 1.535840188014101) internal successors, (1307), 851 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:03,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1307 transitions. [2023-11-12 02:08:03,714 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1307 transitions. Word has length 67 [2023-11-12 02:08:03,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:03,715 INFO L495 AbstractCegarLoop]: Abstraction has 852 states and 1307 transitions. [2023-11-12 02:08:03,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:03,716 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1307 transitions. [2023-11-12 02:08:03,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-12 02:08:03,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:03,717 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] [2023-11-12 02:08:03,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:08:03,718 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:03,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:03,719 INFO L85 PathProgramCache]: Analyzing trace with hash -961078116, now seen corresponding path program 1 times [2023-11-12 02:08:03,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:03,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319070818] [2023-11-12 02:08:03,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:03,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:03,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:03,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:03,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319070818] [2023-11-12 02:08:03,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319070818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:03,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:03,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:08:03,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871158057] [2023-11-12 02:08:03,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:03,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:03,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:03,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:03,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:03,805 INFO L87 Difference]: Start difference. First operand 852 states and 1307 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:03,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:03,868 INFO L93 Difference]: Finished difference Result 2352 states and 3621 transitions. [2023-11-12 02:08:03,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:03,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-12 02:08:03,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:03,895 INFO L225 Difference]: With dead ends: 2352 [2023-11-12 02:08:03,895 INFO L226 Difference]: Without dead ends: 1538 [2023-11-12 02:08:03,896 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 [2023-11-12 02:08:03,898 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 81 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 292 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 [2023-11-12 02:08:03,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 292 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:08:03,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2023-11-12 02:08:03,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1536. [2023-11-12 02:08:03,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1535 states have (on average 1.521172638436482) internal successors, (2335), 1535 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:03,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 2335 transitions. [2023-11-12 02:08:03,982 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 2335 transitions. Word has length 67 [2023-11-12 02:08:03,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:03,983 INFO L495 AbstractCegarLoop]: Abstraction has 1536 states and 2335 transitions. [2023-11-12 02:08:03,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:03,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 2335 transitions. [2023-11-12 02:08:03,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-12 02:08:03,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:03,984 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] [2023-11-12 02:08:03,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:08:03,985 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:03,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:03,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1376131204, now seen corresponding path program 1 times [2023-11-12 02:08:03,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:03,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244821773] [2023-11-12 02:08:03,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:03,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:04,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:04,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244821773] [2023-11-12 02:08:04,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244821773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:04,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:04,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:08:04,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505083868] [2023-11-12 02:08:04,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:04,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:04,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:04,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:04,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:04,057 INFO L87 Difference]: Start difference. First operand 1536 states and 2335 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:04,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:04,148 INFO L93 Difference]: Finished difference Result 4276 states and 6481 transitions. [2023-11-12 02:08:04,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:04,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-12 02:08:04,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:04,164 INFO L225 Difference]: With dead ends: 4276 [2023-11-12 02:08:04,164 INFO L226 Difference]: Without dead ends: 2778 [2023-11-12 02:08:04,167 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 [2023-11-12 02:08:04,168 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 85 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 305 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 [2023-11-12 02:08:04,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 305 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:08:04,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2023-11-12 02:08:04,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 2776. [2023-11-12 02:08:04,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2776 states, 2775 states have (on average 1.495855855855856) internal successors, (4151), 2775 states have internal predecessors, (4151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:04,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2776 states to 2776 states and 4151 transitions. [2023-11-12 02:08:04,290 INFO L78 Accepts]: Start accepts. Automaton has 2776 states and 4151 transitions. Word has length 67 [2023-11-12 02:08:04,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:04,290 INFO L495 AbstractCegarLoop]: Abstraction has 2776 states and 4151 transitions. [2023-11-12 02:08:04,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:04,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2776 states and 4151 transitions. [2023-11-12 02:08:04,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-12 02:08:04,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:04,292 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] [2023-11-12 02:08:04,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:08:04,292 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:04,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:04,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1602930238, now seen corresponding path program 1 times [2023-11-12 02:08:04,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:04,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949483915] [2023-11-12 02:08:04,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:04,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:04,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:04,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:04,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949483915] [2023-11-12 02:08:04,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949483915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:04,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:04,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:08:04,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866043990] [2023-11-12 02:08:04,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:04,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:04,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:04,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:04,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:04,394 INFO L87 Difference]: Start difference. First operand 2776 states and 4151 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2023-11-12 02:08:04,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:04,522 INFO L93 Difference]: Finished difference Result 5471 states and 8221 transitions. [2023-11-12 02:08:04,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:04,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 [2023-11-12 02:08:04,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:04,545 INFO L225 Difference]: With dead ends: 5471 [2023-11-12 02:08:04,545 INFO L226 Difference]: Without dead ends: 3964 [2023-11-12 02:08:04,548 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 [2023-11-12 02:08:04,548 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 86 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 314 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 [2023-11-12 02:08:04,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 314 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:08:04,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3964 states. [2023-11-12 02:08:04,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3964 to 3962. [2023-11-12 02:08:04,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3962 states, 3961 states have (on average 1.484726079272911) internal successors, (5881), 3961 states have internal predecessors, (5881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:04,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3962 states to 3962 states and 5881 transitions. [2023-11-12 02:08:04,732 INFO L78 Accepts]: Start accepts. Automaton has 3962 states and 5881 transitions. Word has length 68 [2023-11-12 02:08:04,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:04,733 INFO L495 AbstractCegarLoop]: Abstraction has 3962 states and 5881 transitions. [2023-11-12 02:08:04,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2023-11-12 02:08:04,733 INFO L276 IsEmpty]: Start isEmpty. Operand 3962 states and 5881 transitions. [2023-11-12 02:08:04,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-12 02:08:04,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:04,737 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:04,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:08:04,737 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:04,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:04,738 INFO L85 PathProgramCache]: Analyzing trace with hash 696202352, now seen corresponding path program 1 times [2023-11-12 02:08:04,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:04,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453421070] [2023-11-12 02:08:04,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:04,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-12 02:08:04,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:04,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453421070] [2023-11-12 02:08:04,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453421070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:04,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:04,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:08:04,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519353623] [2023-11-12 02:08:04,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:04,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:08:04,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:04,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:08:04,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:08:04,993 INFO L87 Difference]: Start difference. First operand 3962 states and 5881 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:05,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:05,510 INFO L93 Difference]: Finished difference Result 13206 states and 19839 transitions. [2023-11-12 02:08:05,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:08:05,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-12 02:08:05,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:05,570 INFO L225 Difference]: With dead ends: 13206 [2023-11-12 02:08:05,570 INFO L226 Difference]: Without dead ends: 11220 [2023-11-12 02:08:05,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:08:05,575 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 1006 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:05,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1006 Valid, 874 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:05,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11220 states. [2023-11-12 02:08:05,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11220 to 5898. [2023-11-12 02:08:05,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5898 states, 5897 states have (on average 1.4856706800067832) internal successors, (8761), 5897 states have internal predecessors, (8761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:05,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5898 states to 5898 states and 8761 transitions. [2023-11-12 02:08:05,937 INFO L78 Accepts]: Start accepts. Automaton has 5898 states and 8761 transitions. Word has length 94 [2023-11-12 02:08:05,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:05,938 INFO L495 AbstractCegarLoop]: Abstraction has 5898 states and 8761 transitions. [2023-11-12 02:08:05,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:05,938 INFO L276 IsEmpty]: Start isEmpty. Operand 5898 states and 8761 transitions. [2023-11-12 02:08:05,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-12 02:08:05,943 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:05,943 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:05,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:08:05,943 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:05,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:05,944 INFO L85 PathProgramCache]: Analyzing trace with hash -589163919, now seen corresponding path program 1 times [2023-11-12 02:08:05,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:05,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547527006] [2023-11-12 02:08:05,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:05,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:06,154 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-12 02:08:06,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:06,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547527006] [2023-11-12 02:08:06,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547527006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:06,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:06,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:08:06,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262295852] [2023-11-12 02:08:06,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:06,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:08:06,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:06,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:08:06,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:08:06,158 INFO L87 Difference]: Start difference. First operand 5898 states and 8761 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:06,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:06,663 INFO L93 Difference]: Finished difference Result 15142 states and 22719 transitions. [2023-11-12 02:08:06,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:08:06,664 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-12 02:08:06,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:06,710 INFO L225 Difference]: With dead ends: 15142 [2023-11-12 02:08:06,711 INFO L226 Difference]: Without dead ends: 13156 [2023-11-12 02:08:06,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:08:06,717 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 952 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:06,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 918 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:06,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13156 states. [2023-11-12 02:08:07,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13156 to 7834. [2023-11-12 02:08:07,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7834 states, 7833 states have (on average 1.486148346738159) internal successors, (11641), 7833 states have internal predecessors, (11641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:07,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7834 states to 7834 states and 11641 transitions. [2023-11-12 02:08:07,120 INFO L78 Accepts]: Start accepts. Automaton has 7834 states and 11641 transitions. Word has length 94 [2023-11-12 02:08:07,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:07,120 INFO L495 AbstractCegarLoop]: Abstraction has 7834 states and 11641 transitions. [2023-11-12 02:08:07,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:07,121 INFO L276 IsEmpty]: Start isEmpty. Operand 7834 states and 11641 transitions. [2023-11-12 02:08:07,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-12 02:08:07,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:07,125 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:07,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:08:07,126 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:07,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:07,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1156479503, now seen corresponding path program 1 times [2023-11-12 02:08:07,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:07,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674297476] [2023-11-12 02:08:07,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:07,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:08:07,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:07,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674297476] [2023-11-12 02:08:07,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674297476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:07,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:07,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:08:07,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40813057] [2023-11-12 02:08:07,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:07,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:08:07,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:07,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:08:07,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:08:07,400 INFO L87 Difference]: Start difference. First operand 7834 states and 11641 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:07,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:07,973 INFO L93 Difference]: Finished difference Result 17078 states and 25599 transitions. [2023-11-12 02:08:07,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:08:07,976 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 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 94 [2023-11-12 02:08:07,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:08,006 INFO L225 Difference]: With dead ends: 17078 [2023-11-12 02:08:08,006 INFO L226 Difference]: Without dead ends: 15092 [2023-11-12 02:08:08,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:08:08,011 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 844 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:08,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 1028 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:08,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15092 states. [2023-11-12 02:08:08,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15092 to 9770. [2023-11-12 02:08:08,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9770 states, 9769 states have (on average 1.4864366874808066) internal successors, (14521), 9769 states have internal predecessors, (14521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:08,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9770 states to 9770 states and 14521 transitions. [2023-11-12 02:08:08,500 INFO L78 Accepts]: Start accepts. Automaton has 9770 states and 14521 transitions. Word has length 94 [2023-11-12 02:08:08,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:08,501 INFO L495 AbstractCegarLoop]: Abstraction has 9770 states and 14521 transitions. [2023-11-12 02:08:08,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:08,502 INFO L276 IsEmpty]: Start isEmpty. Operand 9770 states and 14521 transitions. [2023-11-12 02:08:08,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-12 02:08:08,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:08,506 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:08,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:08:08,507 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:08,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:08,507 INFO L85 PathProgramCache]: Analyzing trace with hash 741426415, now seen corresponding path program 1 times [2023-11-12 02:08:08,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:08,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139789852] [2023-11-12 02:08:08,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:08,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:08,717 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:08:08,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:08,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139789852] [2023-11-12 02:08:08,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139789852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:08,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:08,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:08:08,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927195944] [2023-11-12 02:08:08,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:08,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:08:08,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:08,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:08:08,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:08:08,720 INFO L87 Difference]: Start difference. First operand 9770 states and 14521 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:09,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:09,342 INFO L93 Difference]: Finished difference Result 19014 states and 28479 transitions. [2023-11-12 02:08:09,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:08:09,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 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 94 [2023-11-12 02:08:09,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:09,377 INFO L225 Difference]: With dead ends: 19014 [2023-11-12 02:08:09,377 INFO L226 Difference]: Without dead ends: 17028 [2023-11-12 02:08:09,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:08:09,384 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 887 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:09,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 1005 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:09,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17028 states. [2023-11-12 02:08:10,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17028 to 11706. [2023-11-12 02:08:10,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11706 states, 11705 states have (on average 1.486629645450662) internal successors, (17401), 11705 states have internal predecessors, (17401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:10,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11706 states to 11706 states and 17401 transitions. [2023-11-12 02:08:10,117 INFO L78 Accepts]: Start accepts. Automaton has 11706 states and 17401 transitions. Word has length 94 [2023-11-12 02:08:10,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:10,118 INFO L495 AbstractCegarLoop]: Abstraction has 11706 states and 17401 transitions. [2023-11-12 02:08:10,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:10,119 INFO L276 IsEmpty]: Start isEmpty. Operand 11706 states and 17401 transitions. [2023-11-12 02:08:10,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-12 02:08:10,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:10,128 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:10,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:08:10,129 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:10,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:10,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1920504973, now seen corresponding path program 1 times [2023-11-12 02:08:10,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:10,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637557451] [2023-11-12 02:08:10,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:10,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:10,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:10,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637557451] [2023-11-12 02:08:10,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637557451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:10,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:10,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:08:10,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906726462] [2023-11-12 02:08:10,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:10,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:10,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:10,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:10,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:10,331 INFO L87 Difference]: Start difference. First operand 11706 states and 17401 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:10,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:10,795 INFO L93 Difference]: Finished difference Result 23374 states and 34763 transitions. [2023-11-12 02:08:10,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:10,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-11-12 02:08:10,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:10,821 INFO L225 Difference]: With dead ends: 23374 [2023-11-12 02:08:10,821 INFO L226 Difference]: Without dead ends: 11708 [2023-11-12 02:08:10,836 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 [2023-11-12 02:08:10,837 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 68 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:10,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 306 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:08:10,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11708 states. [2023-11-12 02:08:11,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11708 to 11706. [2023-11-12 02:08:11,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11706 states, 11705 states have (on average 1.4743272105937633) internal successors, (17257), 11705 states have internal predecessors, (17257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:11,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11706 states to 11706 states and 17257 transitions. [2023-11-12 02:08:11,326 INFO L78 Accepts]: Start accepts. Automaton has 11706 states and 17257 transitions. Word has length 95 [2023-11-12 02:08:11,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:11,326 INFO L495 AbstractCegarLoop]: Abstraction has 11706 states and 17257 transitions. [2023-11-12 02:08:11,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:11,326 INFO L276 IsEmpty]: Start isEmpty. Operand 11706 states and 17257 transitions. [2023-11-12 02:08:11,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-12 02:08:11,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:11,331 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] [2023-11-12 02:08:11,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:08:11,332 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:11,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:11,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1956021108, now seen corresponding path program 1 times [2023-11-12 02:08:11,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:11,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49791062] [2023-11-12 02:08:11,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:11,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:11,540 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:11,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:11,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49791062] [2023-11-12 02:08:11,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49791062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:11,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:11,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:08:11,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035585417] [2023-11-12 02:08:11,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:11,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:11,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:11,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:11,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:11,546 INFO L87 Difference]: Start difference. First operand 11706 states and 17257 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:11,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:11,733 INFO L93 Difference]: Finished difference Result 17542 states and 25867 transitions. [2023-11-12 02:08:11,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:11,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-11-12 02:08:11,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:11,746 INFO L225 Difference]: With dead ends: 17542 [2023-11-12 02:08:11,746 INFO L226 Difference]: Without dead ends: 5876 [2023-11-12 02:08:11,758 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 [2023-11-12 02:08:11,759 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 62 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:11,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 287 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:08:11,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5876 states. [2023-11-12 02:08:11,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5876 to 5874. [2023-11-12 02:08:11,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5874 states, 5873 states have (on average 1.4604120551677167) internal successors, (8577), 5873 states have internal predecessors, (8577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:11,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5874 states to 5874 states and 8577 transitions. [2023-11-12 02:08:11,983 INFO L78 Accepts]: Start accepts. Automaton has 5874 states and 8577 transitions. Word has length 95 [2023-11-12 02:08:11,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:11,984 INFO L495 AbstractCegarLoop]: Abstraction has 5874 states and 8577 transitions. [2023-11-12 02:08:11,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:11,985 INFO L276 IsEmpty]: Start isEmpty. Operand 5874 states and 8577 transitions. [2023-11-12 02:08:11,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-12 02:08:11,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:11,987 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:11,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 02:08:11,988 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:11,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:11,989 INFO L85 PathProgramCache]: Analyzing trace with hash -556516341, now seen corresponding path program 1 times [2023-11-12 02:08:11,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:11,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442167680] [2023-11-12 02:08:11,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:11,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:12,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:12,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442167680] [2023-11-12 02:08:12,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442167680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:12,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:12,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:08:12,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129883777] [2023-11-12 02:08:12,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:12,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:12,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:12,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:12,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:12,147 INFO L87 Difference]: Start difference. First operand 5874 states and 8577 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:12,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:12,251 INFO L93 Difference]: Finished difference Result 8794 states and 12847 transitions. [2023-11-12 02:08:12,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:12,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-11-12 02:08:12,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:12,259 INFO L225 Difference]: With dead ends: 8794 [2023-11-12 02:08:12,260 INFO L226 Difference]: Without dead ends: 2960 [2023-11-12 02:08:12,266 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 [2023-11-12 02:08:12,267 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 56 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:12,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 265 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:08:12,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2023-11-12 02:08:12,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 2958. [2023-11-12 02:08:12,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2958 states, 2957 states have (on average 1.4450456543794385) internal successors, (4273), 2957 states have internal predecessors, (4273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:12,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 4273 transitions. [2023-11-12 02:08:12,395 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 4273 transitions. Word has length 95 [2023-11-12 02:08:12,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:12,396 INFO L495 AbstractCegarLoop]: Abstraction has 2958 states and 4273 transitions. [2023-11-12 02:08:12,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:12,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 4273 transitions. [2023-11-12 02:08:12,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-12 02:08:12,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:12,402 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:12,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 02:08:12,402 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:12,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:12,403 INFO L85 PathProgramCache]: Analyzing trace with hash -170268022, now seen corresponding path program 1 times [2023-11-12 02:08:12,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:12,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604490120] [2023-11-12 02:08:12,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:12,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:14,385 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:14,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:14,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604490120] [2023-11-12 02:08:14,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604490120] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:08:14,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298853481] [2023-11-12 02:08:14,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:14,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:14,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43bbb801-593a-4bd9-bc61-f6a0ad032e20/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:14,391 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43bbb801-593a-4bd9-bc61-f6a0ad032e20/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:08:14,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43bbb801-593a-4bd9-bc61-f6a0ad032e20/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:08:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:14,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 02:08:14,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:14,977 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:08:14,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:08:15,325 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:08:15,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298853481] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:08:15,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:08:15,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2023-11-12 02:08:15,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223102243] [2023-11-12 02:08:15,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:08:15,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-12 02:08:15,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:15,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-12 02:08:15,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2023-11-12 02:08:15,331 INFO L87 Difference]: Start difference. First operand 2958 states and 4273 transitions. Second operand has 19 states, 19 states have (on average 14.263157894736842) internal successors, (271), 19 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:26,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:26,305 INFO L93 Difference]: Finished difference Result 27357 states and 38825 transitions. [2023-11-12 02:08:26,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-11-12 02:08:26,306 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 14.263157894736842) internal successors, (271), 19 states have internal predecessors, (271), 0 states have call successors, (0), 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 95 [2023-11-12 02:08:26,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:26,360 INFO L225 Difference]: With dead ends: 27357 [2023-11-12 02:08:26,360 INFO L226 Difference]: Without dead ends: 25339 [2023-11-12 02:08:26,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3712 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1681, Invalid=8219, Unknown=0, NotChecked=0, Total=9900 [2023-11-12 02:08:26,376 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 6129 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6129 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 1721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:26,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6129 Valid, 1913 Invalid, 1721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1614 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-12 02:08:26,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25339 states. [2023-11-12 02:08:27,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25339 to 19416. [2023-11-12 02:08:27,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19416 states, 19415 states have (on average 1.4197785217615246) internal successors, (27565), 19415 states have internal predecessors, (27565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:27,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19416 states to 19416 states and 27565 transitions. [2023-11-12 02:08:27,414 INFO L78 Accepts]: Start accepts. Automaton has 19416 states and 27565 transitions. Word has length 95 [2023-11-12 02:08:27,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:27,415 INFO L495 AbstractCegarLoop]: Abstraction has 19416 states and 27565 transitions. [2023-11-12 02:08:27,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.263157894736842) internal successors, (271), 19 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:27,415 INFO L276 IsEmpty]: Start isEmpty. Operand 19416 states and 27565 transitions. [2023-11-12 02:08:27,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-12 02:08:27,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:27,419 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:27,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43bbb801-593a-4bd9-bc61-f6a0ad032e20/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:08:27,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43bbb801-593a-4bd9-bc61-f6a0ad032e20/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-12 02:08:27,629 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:27,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:27,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1031424495, now seen corresponding path program 1 times [2023-11-12 02:08:27,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:27,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22395198] [2023-11-12 02:08:27,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:27,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:08:27,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:27,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22395198] [2023-11-12 02:08:27,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22395198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:27,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:27,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:08:27,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415480570] [2023-11-12 02:08:27,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:27,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:08:27,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:27,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:08:27,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:08:27,848 INFO L87 Difference]: Start difference. First operand 19416 states and 27565 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:29,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:29,161 INFO L93 Difference]: Finished difference Result 34646 states and 49433 transitions. [2023-11-12 02:08:29,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:08:29,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 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 96 [2023-11-12 02:08:29,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:29,237 INFO L225 Difference]: With dead ends: 34646 [2023-11-12 02:08:29,237 INFO L226 Difference]: Without dead ends: 31948 [2023-11-12 02:08:29,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:08:29,247 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 783 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:29,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 1105 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:29,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31948 states. [2023-11-12 02:08:30,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31948 to 22198. [2023-11-12 02:08:30,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22198 states, 22197 states have (on average 1.4191557417669054) internal successors, (31501), 22197 states have internal predecessors, (31501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:30,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22198 states to 22198 states and 31501 transitions. [2023-11-12 02:08:30,678 INFO L78 Accepts]: Start accepts. Automaton has 22198 states and 31501 transitions. Word has length 96 [2023-11-12 02:08:30,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:30,679 INFO L495 AbstractCegarLoop]: Abstraction has 22198 states and 31501 transitions. [2023-11-12 02:08:30,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:30,680 INFO L276 IsEmpty]: Start isEmpty. Operand 22198 states and 31501 transitions. [2023-11-12 02:08:30,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-12 02:08:30,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:30,684 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:30,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-12 02:08:30,685 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:30,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:30,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1789053146, now seen corresponding path program 1 times [2023-11-12 02:08:30,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:30,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127249477] [2023-11-12 02:08:30,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:30,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:30,873 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:30,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:30,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127249477] [2023-11-12 02:08:30,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127249477] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:30,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:30,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:08:30,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66137690] [2023-11-12 02:08:30,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:30,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:30,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:30,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:30,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:30,877 INFO L87 Difference]: Start difference. First operand 22198 states and 31501 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:31,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:31,469 INFO L93 Difference]: Finished difference Result 32564 states and 46033 transitions. [2023-11-12 02:08:31,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:31,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-11-12 02:08:31,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:31,495 INFO L225 Difference]: With dead ends: 32564 [2023-11-12 02:08:31,495 INFO L226 Difference]: Without dead ends: 10406 [2023-11-12 02:08:31,519 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 [2023-11-12 02:08:31,520 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 40 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:31,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 258 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:08:31,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10406 states. [2023-11-12 02:08:32,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10406 to 10404. [2023-11-12 02:08:32,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10404 states, 10403 states have (on average 1.3845044698644622) internal successors, (14403), 10403 states have internal predecessors, (14403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:32,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10404 states to 10404 states and 14403 transitions. [2023-11-12 02:08:32,041 INFO L78 Accepts]: Start accepts. Automaton has 10404 states and 14403 transitions. Word has length 97 [2023-11-12 02:08:32,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:32,042 INFO L495 AbstractCegarLoop]: Abstraction has 10404 states and 14403 transitions. [2023-11-12 02:08:32,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:32,043 INFO L276 IsEmpty]: Start isEmpty. Operand 10404 states and 14403 transitions. [2023-11-12 02:08:32,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-12 02:08:32,046 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:32,046 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:32,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-12 02:08:32,046 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:32,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:32,047 INFO L85 PathProgramCache]: Analyzing trace with hash -560588554, now seen corresponding path program 1 times [2023-11-12 02:08:32,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:32,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324841962] [2023-11-12 02:08:32,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:32,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:34,079 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:34,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:34,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324841962] [2023-11-12 02:08:34,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324841962] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:08:34,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403859581] [2023-11-12 02:08:34,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:34,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:34,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43bbb801-593a-4bd9-bc61-f6a0ad032e20/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:34,082 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43bbb801-593a-4bd9-bc61-f6a0ad032e20/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:08:34,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43bbb801-593a-4bd9-bc61-f6a0ad032e20/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:08:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:34,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-12 02:08:34,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:35,407 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:35,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:08:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:37,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403859581] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:08:37,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:08:37,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 33 [2023-11-12 02:08:37,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155802825] [2023-11-12 02:08:37,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:08:37,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-12 02:08:37,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:37,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-12 02:08:37,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=896, Unknown=0, NotChecked=0, Total=1056 [2023-11-12 02:08:37,219 INFO L87 Difference]: Start difference. First operand 10404 states and 14403 transitions. Second operand has 33 states, 33 states have (on average 8.121212121212121) internal successors, (268), 33 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)