./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.13.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.13.cil-1.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --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 1b2c6a3c4af8091017033117c21d8fbc40cee2009788b890a114045d77587077 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 03:14:38,208 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 03:14:38,271 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 03:14:38,274 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 03:14:38,274 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 03:14:38,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 03:14:38,309 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 03:14:38,310 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 03:14:38,310 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 03:14:38,310 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 03:14:38,310 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 03:14:38,311 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 03:14:38,311 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 03:14:38,311 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 03:14:38,311 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 03:14:38,312 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 03:14:38,312 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 03:14:38,314 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 03:14:38,315 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 03:14:38,315 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 03:14:38,315 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 03:14:38,315 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 03:14:38,316 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 03:14:38,316 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 03:14:38,316 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 03:14:38,319 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 03:14:38,320 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 03:14:38,320 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 03:14:38,320 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 03:14:38,320 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 03:14:38,321 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 03:14:38,321 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 03:14:38,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 03:14:38,321 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 03:14:38,322 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 03:14:38,322 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 03:14:38,322 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 03:14:38,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 03:14:38,322 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 03:14:38,323 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 03:14:38,323 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 03:14:38,323 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 03:14:38,323 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:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b2c6a3c4af8091017033117c21d8fbc40cee2009788b890a114045d77587077 [2024-10-11 03:14:38,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 03:14:38,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 03:14:38,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 03:14:38,545 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 03:14:38,545 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 03:14:38,546 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.13.cil-1.c [2024-10-11 03:14:39,756 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 03:14:39,944 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 03:14:39,945 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.13.cil-1.c [2024-10-11 03:14:39,958 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/ee3acb26c/8172427c58d04ec5932fff0705c591a3/FLAG558ab73a6 [2024-10-11 03:14:40,326 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/ee3acb26c/8172427c58d04ec5932fff0705c591a3 [2024-10-11 03:14:40,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 03:14:40,329 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 03:14:40,331 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 03:14:40,331 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 03:14:40,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 03:14:40,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:14:40" (1/1) ... [2024-10-11 03:14:40,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b629d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:14:40, skipping insertion in model container [2024-10-11 03:14:40,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:14:40" (1/1) ... [2024-10-11 03:14:40,374 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 03:14:40,528 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.13.cil-1.c[671,684] [2024-10-11 03:14:40,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 03:14:40,653 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 03:14:40,663 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.13.cil-1.c[671,684] [2024-10-11 03:14:40,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 03:14:40,751 INFO L204 MainTranslator]: Completed translation [2024-10-11 03:14:40,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:14:40 WrapperNode [2024-10-11 03:14:40,752 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 03:14:40,753 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 03:14:40,754 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 03:14:40,754 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 03:14:40,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:14:40" (1/1) ... [2024-10-11 03:14:40,768 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:14:40" (1/1) ... [2024-10-11 03:14:40,813 INFO L138 Inliner]: procedures = 54, calls = 71, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 945 [2024-10-11 03:14:40,815 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 03:14:40,815 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 03:14:40,815 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 03:14:40,815 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 03:14:40,828 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:14:40" (1/1) ... [2024-10-11 03:14:40,828 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:14:40" (1/1) ... [2024-10-11 03:14:40,832 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:14:40" (1/1) ... [2024-10-11 03:14:40,849 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 03:14:40,849 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:14:40" (1/1) ... [2024-10-11 03:14:40,849 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:14:40" (1/1) ... [2024-10-11 03:14:40,860 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:14:40" (1/1) ... [2024-10-11 03:14:40,877 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:14:40" (1/1) ... [2024-10-11 03:14:40,881 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:14:40" (1/1) ... [2024-10-11 03:14:40,888 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:14:40" (1/1) ... [2024-10-11 03:14:40,896 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 03:14:40,897 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 03:14:40,897 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 03:14:40,898 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 03:14:40,898 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:14:40" (1/1) ... [2024-10-11 03:14:40,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 03:14:40,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:14:40,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 03:14:40,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 03:14:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 03:14:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-10-11 03:14:40,985 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-10-11 03:14:40,985 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-11 03:14:40,985 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-11 03:14:40,985 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-10-11 03:14:40,985 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-10-11 03:14:40,985 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-10-11 03:14:40,985 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-10-11 03:14:40,985 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-10-11 03:14:40,986 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-10-11 03:14:40,986 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-10-11 03:14:40,986 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-10-11 03:14:40,986 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-10-11 03:14:40,986 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-10-11 03:14:40,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 03:14:40,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 03:14:40,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 03:14:41,104 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 03:14:41,106 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 03:14:41,879 INFO L? ?]: Removed 107 outVars from TransFormulas that were not future-live. [2024-10-11 03:14:41,879 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 03:14:41,942 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 03:14:41,945 INFO L314 CfgBuilder]: Removed 16 assume(true) statements. [2024-10-11 03:14:41,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:14:41 BoogieIcfgContainer [2024-10-11 03:14:41,946 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 03:14:41,947 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 03:14:41,947 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 03:14:41,951 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 03:14:41,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 03:14:40" (1/3) ... [2024-10-11 03:14:41,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ec74f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:14:41, skipping insertion in model container [2024-10-11 03:14:41,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:14:40" (2/3) ... [2024-10-11 03:14:41,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ec74f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:14:41, skipping insertion in model container [2024-10-11 03:14:41,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:14:41" (3/3) ... [2024-10-11 03:14:41,954 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.13.cil-1.c [2024-10-11 03:14:41,968 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 03:14:41,969 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 03:14:42,032 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 03:14:42,037 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6b345df1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 03:14:42,037 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 03:14:42,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 379 states, 341 states have (on average 1.7419354838709677) internal successors, (594), 345 states have internal predecessors, (594), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-10-11 03:14:42,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-11 03:14:42,053 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:14:42,053 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:14:42,054 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:14:42,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:14:42,058 INFO L85 PathProgramCache]: Analyzing trace with hash -612656562, now seen corresponding path program 1 times [2024-10-11 03:14:42,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:14:42,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722886138] [2024-10-11 03:14:42,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:14:42,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:14:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:42,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:14:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:42,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 03:14:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:42,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-11 03:14:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:42,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-11 03:14:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:42,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-11 03:14:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:42,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:14:42,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:14:42,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722886138] [2024-10-11 03:14:42,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722886138] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:14:42,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:14:42,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 03:14:42,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676185041] [2024-10-11 03:14:42,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:14:42,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 03:14:42,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:14:42,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 03:14:42,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:14:42,820 INFO L87 Difference]: Start difference. First operand has 379 states, 341 states have (on average 1.7419354838709677) internal successors, (594), 345 states have internal predecessors, (594), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 03:14:44,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:14:44,655 INFO L93 Difference]: Finished difference Result 887 states and 1537 transitions. [2024-10-11 03:14:44,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 03:14:44,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2024-10-11 03:14:44,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:14:44,672 INFO L225 Difference]: With dead ends: 887 [2024-10-11 03:14:44,673 INFO L226 Difference]: Without dead ends: 516 [2024-10-11 03:14:44,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-11 03:14:44,686 INFO L432 NwaCegarLoop]: 328 mSDtfsCounter, 1058 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-11 03:14:44,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 695 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-11 03:14:44,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-10-11 03:14:44,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 376. [2024-10-11 03:14:44,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 340 states have (on average 1.6411764705882352) internal successors, (558), 342 states have internal predecessors, (558), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-10-11 03:14:44,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 614 transitions. [2024-10-11 03:14:44,764 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 614 transitions. Word has length 171 [2024-10-11 03:14:44,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:14:44,765 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 614 transitions. [2024-10-11 03:14:44,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 03:14:44,765 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 614 transitions. [2024-10-11 03:14:44,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-11 03:14:44,769 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:14:44,769 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:14:44,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 03:14:44,770 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:14:44,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:14:44,771 INFO L85 PathProgramCache]: Analyzing trace with hash 173341328, now seen corresponding path program 1 times [2024-10-11 03:14:44,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:14:44,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280487418] [2024-10-11 03:14:44,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:14:44,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:14:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:44,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:14:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:45,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 03:14:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:45,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-11 03:14:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:45,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-11 03:14:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:45,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-11 03:14:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:45,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:14:45,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:14:45,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280487418] [2024-10-11 03:14:45,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280487418] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:14:45,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:14:45,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 03:14:45,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643782253] [2024-10-11 03:14:45,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:14:45,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 03:14:45,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:14:45,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 03:14:45,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 03:14:45,161 INFO L87 Difference]: Start difference. First operand 376 states and 614 transitions. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 03:14:47,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:14:47,900 INFO L93 Difference]: Finished difference Result 1391 states and 2318 transitions. [2024-10-11 03:14:47,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 03:14:47,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2024-10-11 03:14:47,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:14:47,908 INFO L225 Difference]: With dead ends: 1391 [2024-10-11 03:14:47,909 INFO L226 Difference]: Without dead ends: 1034 [2024-10-11 03:14:47,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-11 03:14:47,911 INFO L432 NwaCegarLoop]: 293 mSDtfsCounter, 1602 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 2588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-11 03:14:47,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1622 Valid, 1170 Invalid, 2588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-11 03:14:47,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2024-10-11 03:14:47,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 753. [2024-10-11 03:14:47,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 688 states have (on average 1.6497093023255813) internal successors, (1135), 691 states have internal predecessors, (1135), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2024-10-11 03:14:47,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1238 transitions. [2024-10-11 03:14:47,989 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1238 transitions. Word has length 171 [2024-10-11 03:14:47,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:14:47,990 INFO L471 AbstractCegarLoop]: Abstraction has 753 states and 1238 transitions. [2024-10-11 03:14:47,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 03:14:47,991 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1238 transitions. [2024-10-11 03:14:47,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-11 03:14:47,996 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:14:47,996 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:14:47,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 03:14:47,996 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:14:47,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:14:47,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1178446604, now seen corresponding path program 1 times [2024-10-11 03:14:47,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:14:47,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391884747] [2024-10-11 03:14:47,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:14:47,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:14:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:48,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:14:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:48,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 03:14:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:48,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-11 03:14:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:48,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-11 03:14:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:48,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-11 03:14:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:48,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:14:48,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:14:48,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391884747] [2024-10-11 03:14:48,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391884747] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:14:48,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:14:48,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 03:14:48,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660948092] [2024-10-11 03:14:48,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:14:48,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 03:14:48,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:14:48,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 03:14:48,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 03:14:48,292 INFO L87 Difference]: Start difference. First operand 753 states and 1238 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 03:14:51,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:14:51,847 INFO L93 Difference]: Finished difference Result 2306 states and 3848 transitions. [2024-10-11 03:14:51,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 03:14:51,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2024-10-11 03:14:51,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:14:51,854 INFO L225 Difference]: With dead ends: 2306 [2024-10-11 03:14:51,854 INFO L226 Difference]: Without dead ends: 1572 [2024-10-11 03:14:51,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-11 03:14:51,857 INFO L432 NwaCegarLoop]: 515 mSDtfsCounter, 1649 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 4008 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1669 SdHoareTripleChecker+Valid, 2236 SdHoareTripleChecker+Invalid, 4075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-11 03:14:51,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1669 Valid, 2236 Invalid, 4075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 4008 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-11 03:14:51,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2024-10-11 03:14:51,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1101. [2024-10-11 03:14:51,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 1007 states have (on average 1.6425024826216486) internal successors, (1654), 1011 states have internal predecessors, (1654), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2024-10-11 03:14:51,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1803 transitions. [2024-10-11 03:14:51,923 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1803 transitions. Word has length 171 [2024-10-11 03:14:51,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:14:51,924 INFO L471 AbstractCegarLoop]: Abstraction has 1101 states and 1803 transitions. [2024-10-11 03:14:51,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 03:14:51,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1803 transitions. [2024-10-11 03:14:51,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-11 03:14:51,927 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:14:51,927 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:14:51,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 03:14:51,927 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:14:51,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:14:51,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1564309006, now seen corresponding path program 1 times [2024-10-11 03:14:51,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:14:51,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173680209] [2024-10-11 03:14:51,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:14:51,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:14:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:52,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:14:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:52,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 03:14:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:52,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-11 03:14:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:52,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-11 03:14:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:52,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-11 03:14:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:52,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:14:52,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:14:52,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173680209] [2024-10-11 03:14:52,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173680209] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:14:52,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:14:52,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 03:14:52,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687530421] [2024-10-11 03:14:52,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:14:52,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 03:14:52,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:14:52,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 03:14:52,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 03:14:52,190 INFO L87 Difference]: Start difference. First operand 1101 states and 1803 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 03:14:55,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:14:55,539 INFO L93 Difference]: Finished difference Result 3646 states and 6075 transitions. [2024-10-11 03:14:55,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 03:14:55,539 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2024-10-11 03:14:55,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:14:55,553 INFO L225 Difference]: With dead ends: 3646 [2024-10-11 03:14:55,554 INFO L226 Difference]: Without dead ends: 2564 [2024-10-11 03:14:55,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-11 03:14:55,560 INFO L432 NwaCegarLoop]: 513 mSDtfsCounter, 1643 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 3987 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 4056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-11 03:14:55,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 2234 Invalid, 4056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3987 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-11 03:14:55,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2024-10-11 03:14:55,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 1801. [2024-10-11 03:14:55,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1649 states have (on average 1.6367495451788963) internal successors, (2699), 1655 states have internal predecessors, (2699), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2024-10-11 03:14:55,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2944 transitions. [2024-10-11 03:14:55,661 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2944 transitions. Word has length 171 [2024-10-11 03:14:55,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:14:55,661 INFO L471 AbstractCegarLoop]: Abstraction has 1801 states and 2944 transitions. [2024-10-11 03:14:55,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 03:14:55,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2944 transitions. [2024-10-11 03:14:55,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-11 03:14:55,664 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:14:55,664 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:14:55,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 03:14:55,665 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:14:55,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:14:55,665 INFO L85 PathProgramCache]: Analyzing trace with hash -799532656, now seen corresponding path program 1 times [2024-10-11 03:14:55,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:14:55,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363812255] [2024-10-11 03:14:55,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:14:55,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:14:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:55,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:14:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:55,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 03:14:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:55,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-11 03:14:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:55,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-11 03:14:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:55,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-11 03:14:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:55,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:14:55,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:14:55,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363812255] [2024-10-11 03:14:55,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363812255] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:14:55,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:14:55,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 03:14:55,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612939561] [2024-10-11 03:14:55,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:14:55,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 03:14:55,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:14:55,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 03:14:55,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 03:14:55,933 INFO L87 Difference]: Start difference. First operand 1801 states and 2944 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 03:14:59,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:14:59,250 INFO L93 Difference]: Finished difference Result 6220 states and 10328 transitions. [2024-10-11 03:14:59,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 03:14:59,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2024-10-11 03:14:59,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:14:59,268 INFO L225 Difference]: With dead ends: 6220 [2024-10-11 03:14:59,268 INFO L226 Difference]: Without dead ends: 4438 [2024-10-11 03:14:59,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-11 03:14:59,274 INFO L432 NwaCegarLoop]: 513 mSDtfsCounter, 1642 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 3974 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 4043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-11 03:14:59,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1662 Valid, 2234 Invalid, 4043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3974 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-11 03:14:59,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4438 states. [2024-10-11 03:14:59,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4438 to 3202. [2024-10-11 03:14:59,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3202 states, 2934 states have (on average 1.6322426721199728) internal successors, (4789), 2944 states have internal predecessors, (4789), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2024-10-11 03:14:59,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3202 states to 3202 states and 5232 transitions. [2024-10-11 03:14:59,478 INFO L78 Accepts]: Start accepts. Automaton has 3202 states and 5232 transitions. Word has length 171 [2024-10-11 03:14:59,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:14:59,479 INFO L471 AbstractCegarLoop]: Abstraction has 3202 states and 5232 transitions. [2024-10-11 03:14:59,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 03:14:59,479 INFO L276 IsEmpty]: Start isEmpty. Operand 3202 states and 5232 transitions. [2024-10-11 03:14:59,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-11 03:14:59,482 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:14:59,482 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:14:59,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 03:14:59,482 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:14:59,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:14:59,483 INFO L85 PathProgramCache]: Analyzing trace with hash -2122711602, now seen corresponding path program 1 times [2024-10-11 03:14:59,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:14:59,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874677969] [2024-10-11 03:14:59,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:14:59,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:14:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:59,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:14:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:59,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 03:14:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:59,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-11 03:14:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:59,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-11 03:14:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:59,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-11 03:14:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:14:59,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:14:59,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:14:59,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874677969] [2024-10-11 03:14:59,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874677969] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:14:59,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:14:59,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 03:14:59,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250052693] [2024-10-11 03:14:59,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:14:59,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 03:14:59,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:14:59,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 03:14:59,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 03:14:59,733 INFO L87 Difference]: Start difference. First operand 3202 states and 5232 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 03:15:03,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:15:03,060 INFO L93 Difference]: Finished difference Result 11367 states and 18850 transitions. [2024-10-11 03:15:03,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 03:15:03,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2024-10-11 03:15:03,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:15:03,093 INFO L225 Difference]: With dead ends: 11367 [2024-10-11 03:15:03,093 INFO L226 Difference]: Without dead ends: 8184 [2024-10-11 03:15:03,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-11 03:15:03,105 INFO L432 NwaCegarLoop]: 513 mSDtfsCounter, 1641 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 3961 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1661 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 4030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-11 03:15:03,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1661 Valid, 2234 Invalid, 4030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3961 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-11 03:15:03,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8184 states. [2024-10-11 03:15:03,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8184 to 6011. [2024-10-11 03:15:03,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6011 states, 5511 states have (on average 1.6292868807838867) internal successors, (8979), 5529 states have internal predecessors, (8979), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2024-10-11 03:15:03,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6011 states to 6011 states and 9836 transitions. [2024-10-11 03:15:03,409 INFO L78 Accepts]: Start accepts. Automaton has 6011 states and 9836 transitions. Word has length 171 [2024-10-11 03:15:03,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:15:03,410 INFO L471 AbstractCegarLoop]: Abstraction has 6011 states and 9836 transitions. [2024-10-11 03:15:03,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 03:15:03,411 INFO L276 IsEmpty]: Start isEmpty. Operand 6011 states and 9836 transitions. [2024-10-11 03:15:03,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-11 03:15:03,415 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:15:03,415 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:15:03,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 03:15:03,415 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:15:03,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:15:03,416 INFO L85 PathProgramCache]: Analyzing trace with hash -225732144, now seen corresponding path program 1 times [2024-10-11 03:15:03,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:15:03,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402719026] [2024-10-11 03:15:03,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:15:03,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:15:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:03,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:15:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:03,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 03:15:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:03,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-11 03:15:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:03,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-11 03:15:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:03,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-11 03:15:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:03,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:15:03,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:15:03,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402719026] [2024-10-11 03:15:03,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402719026] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:15:03,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:15:03,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 03:15:03,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050994701] [2024-10-11 03:15:03,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:15:03,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 03:15:03,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:15:03,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 03:15:03,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 03:15:03,627 INFO L87 Difference]: Start difference. First operand 6011 states and 9836 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 03:15:07,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:15:07,024 INFO L93 Difference]: Finished difference Result 21662 states and 35956 transitions. [2024-10-11 03:15:07,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 03:15:07,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2024-10-11 03:15:07,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:15:07,080 INFO L225 Difference]: With dead ends: 21662 [2024-10-11 03:15:07,081 INFO L226 Difference]: Without dead ends: 15670 [2024-10-11 03:15:07,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-11 03:15:07,098 INFO L432 NwaCegarLoop]: 302 mSDtfsCounter, 1752 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 3286 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 3397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-11 03:15:07,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1772 Valid, 1444 Invalid, 3397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 3286 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-11 03:15:07,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15670 states. [2024-10-11 03:15:07,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15670 to 11644. [2024-10-11 03:15:07,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11644 states, 10680 states have (on average 1.627434456928839) internal successors, (17381), 10714 states have internal predecessors, (17381), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2024-10-11 03:15:07,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11644 states to 11644 states and 19120 transitions. [2024-10-11 03:15:07,607 INFO L78 Accepts]: Start accepts. Automaton has 11644 states and 19120 transitions. Word has length 171 [2024-10-11 03:15:07,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:15:07,607 INFO L471 AbstractCegarLoop]: Abstraction has 11644 states and 19120 transitions. [2024-10-11 03:15:07,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 03:15:07,608 INFO L276 IsEmpty]: Start isEmpty. Operand 11644 states and 19120 transitions. [2024-10-11 03:15:07,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-11 03:15:07,614 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:15:07,614 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:15:07,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 03:15:07,614 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:15:07,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:15:07,615 INFO L85 PathProgramCache]: Analyzing trace with hash 112555406, now seen corresponding path program 1 times [2024-10-11 03:15:07,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:15:07,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091905941] [2024-10-11 03:15:07,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:15:07,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:15:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:07,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:15:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:07,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 03:15:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:07,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-11 03:15:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:07,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-11 03:15:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:07,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-11 03:15:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:07,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:15:07,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:15:07,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091905941] [2024-10-11 03:15:07,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091905941] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:15:07,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:15:07,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 03:15:07,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565101131] [2024-10-11 03:15:07,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:15:07,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 03:15:07,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:15:07,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 03:15:07,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 03:15:07,851 INFO L87 Difference]: Start difference. First operand 11644 states and 19120 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 03:15:11,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:15:11,809 INFO L93 Difference]: Finished difference Result 42253 states and 70362 transitions. [2024-10-11 03:15:11,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 03:15:11,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2024-10-11 03:15:11,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:15:11,917 INFO L225 Difference]: With dead ends: 42253 [2024-10-11 03:15:11,917 INFO L226 Difference]: Without dead ends: 30628 [2024-10-11 03:15:11,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-11 03:15:11,954 INFO L432 NwaCegarLoop]: 513 mSDtfsCounter, 1639 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 3935 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-11 03:15:11,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 2234 Invalid, 4004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3935 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-11 03:15:12,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30628 states. [2024-10-11 03:15:13,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30628 to 22941. [2024-10-11 03:15:13,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22941 states, 21049 states have (on average 1.6262530286474417) internal successors, (34231), 21115 states have internal predecessors, (34231), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2024-10-11 03:15:13,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22941 states to 22941 states and 37896 transitions. [2024-10-11 03:15:13,303 INFO L78 Accepts]: Start accepts. Automaton has 22941 states and 37896 transitions. Word has length 171 [2024-10-11 03:15:13,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:15:13,305 INFO L471 AbstractCegarLoop]: Abstraction has 22941 states and 37896 transitions. [2024-10-11 03:15:13,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 03:15:13,306 INFO L276 IsEmpty]: Start isEmpty. Operand 22941 states and 37896 transitions. [2024-10-11 03:15:13,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-11 03:15:13,320 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:15:13,320 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:15:13,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 03:15:13,320 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:15:13,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:15:13,322 INFO L85 PathProgramCache]: Analyzing trace with hash 539109904, now seen corresponding path program 1 times [2024-10-11 03:15:13,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:15:13,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956282267] [2024-10-11 03:15:13,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:15:13,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:15:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:13,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:15:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:13,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 03:15:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:13,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-11 03:15:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:13,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-11 03:15:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:13,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-11 03:15:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:15:13,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:15:13,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956282267] [2024-10-11 03:15:13,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956282267] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:15:13,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:15:13,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 03:15:13,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795067869] [2024-10-11 03:15:13,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:15:13,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 03:15:13,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:15:13,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 03:15:13,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 03:15:13,535 INFO L87 Difference]: Start difference. First operand 22941 states and 37896 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 03:15:18,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:15:18,899 INFO L93 Difference]: Finished difference Result 83436 states and 139776 transitions. [2024-10-11 03:15:18,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 03:15:18,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2024-10-11 03:15:18,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:15:19,161 INFO L225 Difference]: With dead ends: 83436 [2024-10-11 03:15:19,162 INFO L226 Difference]: Without dead ends: 60514 [2024-10-11 03:15:19,252 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-11 03:15:19,255 INFO L432 NwaCegarLoop]: 513 mSDtfsCounter, 1638 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 3922 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 3991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-11 03:15:19,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1658 Valid, 2234 Invalid, 3991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3922 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-11 03:15:19,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60514 states. [2024-10-11 03:15:21,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60514 to 45598. [2024-10-11 03:15:21,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45598 states, 41850 states have (on average 1.625448028673835) internal successors, (68025), 41980 states have internal predecessors, (68025), 2845 states have call successors, (2845), 775 states have call predecessors, (2845), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2024-10-11 03:15:21,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45598 states to 45598 states and 76028 transitions. [2024-10-11 03:15:21,626 INFO L78 Accepts]: Start accepts. Automaton has 45598 states and 76028 transitions. Word has length 171 [2024-10-11 03:15:21,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:15:21,626 INFO L471 AbstractCegarLoop]: Abstraction has 45598 states and 76028 transitions. [2024-10-11 03:15:21,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 03:15:21,627 INFO L276 IsEmpty]: Start isEmpty. Operand 45598 states and 76028 transitions. [2024-10-11 03:15:21,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-11 03:15:21,649 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:15:21,649 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:15:21,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 03:15:21,649 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:15:21,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:15:21,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1319602, now seen corresponding path program 1 times [2024-10-11 03:15:21,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:15:21,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799255780] [2024-10-11 03:15:21,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:15:21,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:15:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:21,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:15:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:21,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 03:15:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:21,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-11 03:15:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:21,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-11 03:15:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:21,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-11 03:15:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:21,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:15:21,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:15:21,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799255780] [2024-10-11 03:15:21,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799255780] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:15:21,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:15:21,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 03:15:21,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114883559] [2024-10-11 03:15:21,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:15:21,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 03:15:21,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:15:21,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 03:15:21,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 03:15:21,835 INFO L87 Difference]: Start difference. First operand 45598 states and 76028 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 03:15:29,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:15:29,798 INFO L93 Difference]: Finished difference Result 165803 states and 280454 transitions. [2024-10-11 03:15:29,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 03:15:29,798 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2024-10-11 03:15:29,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:15:30,330 INFO L225 Difference]: With dead ends: 165803 [2024-10-11 03:15:30,331 INFO L226 Difference]: Without dead ends: 120224 [2024-10-11 03:15:30,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-11 03:15:30,509 INFO L432 NwaCegarLoop]: 513 mSDtfsCounter, 1643 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 3904 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 3973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-11 03:15:30,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 2234 Invalid, 3973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3904 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-11 03:15:30,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120224 states. [2024-10-11 03:15:35,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120224 to 91039. [2024-10-11 03:15:35,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91039 states, 83579 states have (on average 1.6248459541272329) internal successors, (135803), 83837 states have internal predecessors, (135803), 5661 states have call successors, (5661), 1543 states have call predecessors, (5661), 1798 states have return successors, (12476), 5914 states have call predecessors, (12476), 5659 states have call successors, (12476) [2024-10-11 03:15:35,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91039 states to 91039 states and 153940 transitions. [2024-10-11 03:15:35,681 INFO L78 Accepts]: Start accepts. Automaton has 91039 states and 153940 transitions. Word has length 171 [2024-10-11 03:15:35,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:15:35,681 INFO L471 AbstractCegarLoop]: Abstraction has 91039 states and 153940 transitions. [2024-10-11 03:15:35,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 03:15:35,682 INFO L276 IsEmpty]: Start isEmpty. Operand 91039 states and 153940 transitions. [2024-10-11 03:15:35,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-11 03:15:35,965 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:15:35,965 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:15:35,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 03:15:35,966 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:15:35,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:15:35,966 INFO L85 PathProgramCache]: Analyzing trace with hash -157300144, now seen corresponding path program 1 times [2024-10-11 03:15:35,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:15:35,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527259670] [2024-10-11 03:15:35,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:15:35,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:15:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:36,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 03:15:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:36,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 03:15:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:36,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-11 03:15:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:36,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-11 03:15:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:36,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-11 03:15:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:15:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:15:36,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:15:36,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527259670] [2024-10-11 03:15:36,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527259670] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:15:36,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:15:36,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 03:15:36,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257505671] [2024-10-11 03:15:36,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:15:36,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 03:15:36,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:15:36,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 03:15:36,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 03:15:36,185 INFO L87 Difference]: Start difference. First operand 91039 states and 153940 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 03:15:48,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:15:48,860 INFO L93 Difference]: Finished difference Result 330280 states and 566936 transitions. [2024-10-11 03:15:48,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 03:15:48,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2024-10-11 03:15:48,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted.