./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.BOUNDED-10.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 cdd691469d2e12c2dd1871c48be4dd2db0b9d27541ac5dee5ff25a04db0d98eb --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 02:21:58,499 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 02:21:58,564 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 02:21:58,569 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 02:21:58,570 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 02:21:58,590 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 02:21:58,591 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 02:21:58,591 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 02:21:58,592 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 02:21:58,594 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 02:21:58,595 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 02:21:58,595 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 02:21:58,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 02:21:58,596 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 02:21:58,596 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 02:21:58,596 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 02:21:58,596 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 02:21:58,597 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 02:21:58,598 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 02:21:58,598 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 02:21:58,598 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 02:21:58,598 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 02:21:58,599 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 02:21:58,599 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 02:21:58,599 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 02:21:58,599 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 02:21:58,599 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 02:21:58,599 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 02:21:58,600 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 02:21:58,600 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 02:21:58,600 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 02:21:58,601 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 02:21:58,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:21:58,601 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 02:21:58,602 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 02:21:58,602 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 02:21:58,602 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 02:21:58,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 02:21:58,602 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 02:21:58,602 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 02:21:58,602 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 02:21:58,603 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 02:21:58,603 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cdd691469d2e12c2dd1871c48be4dd2db0b9d27541ac5dee5ff25a04db0d98eb [2024-11-22 02:21:58,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 02:21:58,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 02:21:58,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 02:21:58,831 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 02:21:58,831 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 02:21:58,832 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.BOUNDED-10.pals.c [2024-11-22 02:22:00,098 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 02:22:00,265 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 02:22:00,265 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.BOUNDED-10.pals.c [2024-11-22 02:22:00,274 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73c37cbc0/828fa239676640cba76a82d0e1e95900/FLAGccab6fc7d [2024-11-22 02:22:00,648 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73c37cbc0/828fa239676640cba76a82d0e1e95900 [2024-11-22 02:22:00,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 02:22:00,651 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 02:22:00,653 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 02:22:00,653 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 02:22:00,657 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 02:22:00,658 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:22:00" (1/1) ... [2024-11-22 02:22:00,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@799aa992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:00, skipping insertion in model container [2024-11-22 02:22:00,658 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:22:00" (1/1) ... [2024-11-22 02:22:00,688 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 02:22:00,905 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.BOUNDED-10.pals.c[14702,14715] [2024-11-22 02:22:00,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:22:00,919 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 02:22:01,037 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.BOUNDED-10.pals.c[14702,14715] [2024-11-22 02:22:01,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:22:01,058 INFO L204 MainTranslator]: Completed translation [2024-11-22 02:22:01,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:01 WrapperNode [2024-11-22 02:22:01,059 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 02:22:01,060 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 02:22:01,060 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 02:22:01,060 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 02:22:01,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:01" (1/1) ... [2024-11-22 02:22:01,074 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:01" (1/1) ... [2024-11-22 02:22:01,100 INFO L138 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 510 [2024-11-22 02:22:01,101 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 02:22:01,101 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 02:22:01,101 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 02:22:01,101 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 02:22:01,114 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:01" (1/1) ... [2024-11-22 02:22:01,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:01" (1/1) ... [2024-11-22 02:22:01,120 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:01" (1/1) ... [2024-11-22 02:22:01,136 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 02:22:01,137 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:01" (1/1) ... [2024-11-22 02:22:01,137 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:01" (1/1) ... [2024-11-22 02:22:01,149 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:01" (1/1) ... [2024-11-22 02:22:01,155 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:01" (1/1) ... [2024-11-22 02:22:01,157 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:01" (1/1) ... [2024-11-22 02:22:01,162 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:01" (1/1) ... [2024-11-22 02:22:01,169 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 02:22:01,170 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 02:22:01,170 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 02:22:01,170 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 02:22:01,171 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:01" (1/1) ... [2024-11-22 02:22:01,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:22:01,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:22:01,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 02:22:01,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 02:22:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2024-11-22 02:22:01,251 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2024-11-22 02:22:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 02:22:01,252 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2024-11-22 02:22:01,252 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2024-11-22 02:22:01,252 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-11-22 02:22:01,252 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-11-22 02:22:01,252 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2024-11-22 02:22:01,252 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2024-11-22 02:22:01,252 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 02:22:01,252 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 02:22:01,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 02:22:01,252 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2024-11-22 02:22:01,253 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2024-11-22 02:22:01,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 02:22:01,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 02:22:01,253 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2024-11-22 02:22:01,253 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2024-11-22 02:22:01,341 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 02:22:01,343 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 02:22:01,783 INFO L? ?]: Removed 115 outVars from TransFormulas that were not future-live. [2024-11-22 02:22:01,784 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 02:22:01,801 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 02:22:01,803 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 02:22:01,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:22:01 BoogieIcfgContainer [2024-11-22 02:22:01,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 02:22:01,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 02:22:01,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 02:22:01,809 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 02:22:01,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:22:00" (1/3) ... [2024-11-22 02:22:01,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d87440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:22:01, skipping insertion in model container [2024-11-22 02:22:01,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:01" (2/3) ... [2024-11-22 02:22:01,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d87440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:22:01, skipping insertion in model container [2024-11-22 02:22:01,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:22:01" (3/3) ... [2024-11-22 02:22:01,811 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.4_2.ufo.BOUNDED-10.pals.c [2024-11-22 02:22:01,824 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 02:22:01,825 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 02:22:01,880 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 02:22:01,885 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;@4c691819, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 02:22:01,885 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 02:22:01,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 181 states, 141 states have (on average 1.553191489361702) internal successors, (219), 142 states have internal predecessors, (219), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-22 02:22:01,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-22 02:22:01,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:01,900 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] [2024-11-22 02:22:01,900 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:01,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:01,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1494571229, now seen corresponding path program 1 times [2024-11-22 02:22:01,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:01,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015633867] [2024-11-22 02:22:01,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:01,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:02,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:22:02,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:02,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015633867] [2024-11-22 02:22:02,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015633867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:02,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:02,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 02:22:02,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943255647] [2024-11-22 02:22:02,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:02,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 02:22:02,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:02,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 02:22:02,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 02:22:02,200 INFO L87 Difference]: Start difference. First operand has 181 states, 141 states have (on average 1.553191489361702) internal successors, (219), 142 states have internal predecessors, (219), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:22:02,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:02,244 INFO L93 Difference]: Finished difference Result 346 states and 562 transitions. [2024-11-22 02:22:02,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 02:22:02,247 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-22 02:22:02,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:02,257 INFO L225 Difference]: With dead ends: 346 [2024-11-22 02:22:02,257 INFO L226 Difference]: Without dead ends: 177 [2024-11-22 02:22:02,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 02:22:02,265 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:02,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:02,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-22 02:22:02,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2024-11-22 02:22:02,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 138 states have (on average 1.536231884057971) internal successors, (212), 138 states have internal predecessors, (212), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-22 02:22:02,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 274 transitions. [2024-11-22 02:22:02,313 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 274 transitions. Word has length 28 [2024-11-22 02:22:02,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:02,314 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 274 transitions. [2024-11-22 02:22:02,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:22:02,314 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 274 transitions. [2024-11-22 02:22:02,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-22 02:22:02,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:02,316 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] [2024-11-22 02:22:02,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 02:22:02,316 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:02,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:02,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1713425947, now seen corresponding path program 1 times [2024-11-22 02:22:02,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:02,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512127675] [2024-11-22 02:22:02,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:02,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:02,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:22:02,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:02,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512127675] [2024-11-22 02:22:02,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512127675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:02,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:02,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 02:22:02,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694963625] [2024-11-22 02:22:02,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:02,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 02:22:02,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:02,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 02:22:02,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:22:02,582 INFO L87 Difference]: Start difference. First operand 177 states and 274 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:22:02,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:02,690 INFO L93 Difference]: Finished difference Result 453 states and 709 transitions. [2024-11-22 02:22:02,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 02:22:02,691 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-22 02:22:02,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:02,693 INFO L225 Difference]: With dead ends: 453 [2024-11-22 02:22:02,693 INFO L226 Difference]: Without dead ends: 290 [2024-11-22 02:22:02,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:22:02,695 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 134 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:02,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 1317 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:22:02,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-22 02:22:02,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 177. [2024-11-22 02:22:02,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 138 states have (on average 1.4492753623188406) internal successors, (200), 138 states have internal predecessors, (200), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-22 02:22:02,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 262 transitions. [2024-11-22 02:22:02,722 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 262 transitions. Word has length 28 [2024-11-22 02:22:02,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:02,723 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 262 transitions. [2024-11-22 02:22:02,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:22:02,723 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 262 transitions. [2024-11-22 02:22:02,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-22 02:22:02,724 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:02,724 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:02,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 02:22:02,724 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:02,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:02,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1150379712, now seen corresponding path program 1 times [2024-11-22 02:22:02,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:02,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892198032] [2024-11-22 02:22:02,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:02,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:02,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:22:02,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:02,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892198032] [2024-11-22 02:22:02,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892198032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:02,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:02,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:02,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438372545] [2024-11-22 02:22:02,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:02,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:02,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:02,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:02,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:02,928 INFO L87 Difference]: Start difference. First operand 177 states and 262 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:22:02,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:02,993 INFO L93 Difference]: Finished difference Result 341 states and 514 transitions. [2024-11-22 02:22:02,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 02:22:02,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2024-11-22 02:22:02,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:02,995 INFO L225 Difference]: With dead ends: 341 [2024-11-22 02:22:02,995 INFO L226 Difference]: Without dead ends: 181 [2024-11-22 02:22:02,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:22:02,997 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 3 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:02,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 758 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:02,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-22 02:22:03,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-11-22 02:22:03,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 141 states have (on average 1.4397163120567376) internal successors, (203), 141 states have internal predecessors, (203), 31 states have call successors, (31), 8 states have call predecessors, (31), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-22 02:22:03,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 265 transitions. [2024-11-22 02:22:03,006 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 265 transitions. Word has length 39 [2024-11-22 02:22:03,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:03,007 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 265 transitions. [2024-11-22 02:22:03,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:22:03,007 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 265 transitions. [2024-11-22 02:22:03,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-22 02:22:03,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:03,008 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:03,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 02:22:03,009 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:03,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:03,009 INFO L85 PathProgramCache]: Analyzing trace with hash -536779374, now seen corresponding path program 1 times [2024-11-22 02:22:03,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:03,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296640472] [2024-11-22 02:22:03,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:03,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:22:03,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:03,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296640472] [2024-11-22 02:22:03,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296640472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:03,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:03,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:22:03,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946894383] [2024-11-22 02:22:03,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:03,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:22:03,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:03,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:22:03,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:22:03,076 INFO L87 Difference]: Start difference. First operand 181 states and 265 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 02:22:03,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:03,113 INFO L93 Difference]: Finished difference Result 497 states and 738 transitions. [2024-11-22 02:22:03,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:22:03,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2024-11-22 02:22:03,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:03,116 INFO L225 Difference]: With dead ends: 497 [2024-11-22 02:22:03,117 INFO L226 Difference]: Without dead ends: 333 [2024-11-22 02:22:03,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:22:03,120 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 213 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:03,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 525 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:03,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-22 02:22:03,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 327. [2024-11-22 02:22:03,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 250 states have (on average 1.46) internal successors, (365), 251 states have internal predecessors, (365), 60 states have call successors, (60), 16 states have call predecessors, (60), 16 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-22 02:22:03,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 485 transitions. [2024-11-22 02:22:03,152 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 485 transitions. Word has length 55 [2024-11-22 02:22:03,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:03,152 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 485 transitions. [2024-11-22 02:22:03,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 02:22:03,153 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 485 transitions. [2024-11-22 02:22:03,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-22 02:22:03,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:03,156 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:03,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 02:22:03,156 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:03,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:03,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1864543556, now seen corresponding path program 1 times [2024-11-22 02:22:03,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:03,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993234216] [2024-11-22 02:22:03,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:03,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:03,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:22:03,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:03,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993234216] [2024-11-22 02:22:03,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993234216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:03,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:03,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:22:03,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784319613] [2024-11-22 02:22:03,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:03,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:22:03,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:03,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:22:03,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:22:03,224 INFO L87 Difference]: Start difference. First operand 327 states and 485 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 02:22:03,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:03,268 INFO L93 Difference]: Finished difference Result 920 states and 1376 transitions. [2024-11-22 02:22:03,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:22:03,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2024-11-22 02:22:03,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:03,276 INFO L225 Difference]: With dead ends: 920 [2024-11-22 02:22:03,277 INFO L226 Difference]: Without dead ends: 610 [2024-11-22 02:22:03,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:22:03,279 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 215 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:03,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 547 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:03,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2024-11-22 02:22:03,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 604. [2024-11-22 02:22:03,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 455 states have (on average 1.4703296703296704) internal successors, (669), 458 states have internal predecessors, (669), 117 states have call successors, (117), 31 states have call predecessors, (117), 31 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-22 02:22:03,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 903 transitions. [2024-11-22 02:22:03,321 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 903 transitions. Word has length 56 [2024-11-22 02:22:03,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:03,322 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 903 transitions. [2024-11-22 02:22:03,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 02:22:03,322 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 903 transitions. [2024-11-22 02:22:03,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-22 02:22:03,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:03,327 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:03,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 02:22:03,328 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:03,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:03,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1150560062, now seen corresponding path program 1 times [2024-11-22 02:22:03,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:03,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827656726] [2024-11-22 02:22:03,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:03,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:03,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:22:03,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:03,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827656726] [2024-11-22 02:22:03,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827656726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:03,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:03,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:22:03,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445018141] [2024-11-22 02:22:03,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:03,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:22:03,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:03,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:22:03,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:22:03,483 INFO L87 Difference]: Start difference. First operand 604 states and 903 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 02:22:03,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:03,635 INFO L93 Difference]: Finished difference Result 1295 states and 1932 transitions. [2024-11-22 02:22:03,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:22:03,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2024-11-22 02:22:03,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:03,641 INFO L225 Difference]: With dead ends: 1295 [2024-11-22 02:22:03,641 INFO L226 Difference]: Without dead ends: 708 [2024-11-22 02:22:03,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:22:03,644 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 369 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:03,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 672 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:22:03,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2024-11-22 02:22:03,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 692. [2024-11-22 02:22:03,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 530 states have (on average 1.4547169811320755) internal successors, (771), 533 states have internal predecessors, (771), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-22 02:22:03,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1019 transitions. [2024-11-22 02:22:03,690 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1019 transitions. Word has length 56 [2024-11-22 02:22:03,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:03,691 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1019 transitions. [2024-11-22 02:22:03,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 02:22:03,691 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1019 transitions. [2024-11-22 02:22:03,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-22 02:22:03,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:03,692 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:03,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 02:22:03,692 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:03,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:03,693 INFO L85 PathProgramCache]: Analyzing trace with hash 984808241, now seen corresponding path program 1 times [2024-11-22 02:22:03,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:03,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835636661] [2024-11-22 02:22:03,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:03,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:03,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:22:03,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:03,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835636661] [2024-11-22 02:22:03,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835636661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:03,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:03,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:22:03,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737862738] [2024-11-22 02:22:03,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:03,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:22:03,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:03,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:22:03,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:22:03,802 INFO L87 Difference]: Start difference. First operand 692 states and 1019 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 02:22:03,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:03,946 INFO L93 Difference]: Finished difference Result 1299 states and 1932 transitions. [2024-11-22 02:22:03,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:22:03,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2024-11-22 02:22:03,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:03,971 INFO L225 Difference]: With dead ends: 1299 [2024-11-22 02:22:03,971 INFO L226 Difference]: Without dead ends: 712 [2024-11-22 02:22:03,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:22:03,973 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 369 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:03,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 672 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:22:03,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2024-11-22 02:22:04,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 700. [2024-11-22 02:22:04,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 538 states have (on average 1.4479553903345725) internal successors, (779), 541 states have internal predecessors, (779), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-22 02:22:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1027 transitions. [2024-11-22 02:22:04,011 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1027 transitions. Word has length 57 [2024-11-22 02:22:04,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:04,011 INFO L471 AbstractCegarLoop]: Abstraction has 700 states and 1027 transitions. [2024-11-22 02:22:04,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 02:22:04,012 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1027 transitions. [2024-11-22 02:22:04,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-22 02:22:04,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:04,014 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:04,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 02:22:04,014 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:04,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:04,015 INFO L85 PathProgramCache]: Analyzing trace with hash 461948067, now seen corresponding path program 1 times [2024-11-22 02:22:04,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:04,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928540019] [2024-11-22 02:22:04,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:04,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:04,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:22:04,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:04,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928540019] [2024-11-22 02:22:04,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928540019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:04,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:04,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:04,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287917533] [2024-11-22 02:22:04,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:04,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:04,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:04,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:04,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:04,127 INFO L87 Difference]: Start difference. First operand 700 states and 1027 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 02:22:04,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:04,255 INFO L93 Difference]: Finished difference Result 1287 states and 1912 transitions. [2024-11-22 02:22:04,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 02:22:04,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 59 [2024-11-22 02:22:04,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:04,259 INFO L225 Difference]: With dead ends: 1287 [2024-11-22 02:22:04,259 INFO L226 Difference]: Without dead ends: 700 [2024-11-22 02:22:04,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:22:04,261 INFO L432 NwaCegarLoop]: 229 mSDtfsCounter, 61 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:04,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 666 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:22:04,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2024-11-22 02:22:04,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 700. [2024-11-22 02:22:04,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 538 states have (on average 1.4405204460966543) internal successors, (775), 541 states have internal predecessors, (775), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-22 02:22:04,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1023 transitions. [2024-11-22 02:22:04,290 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1023 transitions. Word has length 59 [2024-11-22 02:22:04,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:04,290 INFO L471 AbstractCegarLoop]: Abstraction has 700 states and 1023 transitions. [2024-11-22 02:22:04,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 02:22:04,291 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1023 transitions. [2024-11-22 02:22:04,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-22 02:22:04,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:04,291 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:04,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 02:22:04,292 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:04,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:04,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1405034612, now seen corresponding path program 1 times [2024-11-22 02:22:04,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:04,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560517503] [2024-11-22 02:22:04,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:04,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:22:04,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:04,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560517503] [2024-11-22 02:22:04,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560517503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:04,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:04,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:04,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468998864] [2024-11-22 02:22:04,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:04,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:04,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:04,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:04,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:04,450 INFO L87 Difference]: Start difference. First operand 700 states and 1023 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-22 02:22:04,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:04,500 INFO L93 Difference]: Finished difference Result 1307 states and 1936 transitions. [2024-11-22 02:22:04,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 02:22:04,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 60 [2024-11-22 02:22:04,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:04,504 INFO L225 Difference]: With dead ends: 1307 [2024-11-22 02:22:04,505 INFO L226 Difference]: Without dead ends: 720 [2024-11-22 02:22:04,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:22:04,508 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 4 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:04,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 770 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:04,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-11-22 02:22:04,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 720. [2024-11-22 02:22:04,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 554 states have (on average 1.4277978339350181) internal successors, (791), 557 states have internal predecessors, (791), 124 states have call successors, (124), 41 states have call predecessors, (124), 41 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-22 02:22:04,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1039 transitions. [2024-11-22 02:22:04,536 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1039 transitions. Word has length 60 [2024-11-22 02:22:04,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:04,537 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1039 transitions. [2024-11-22 02:22:04,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-22 02:22:04,537 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1039 transitions. [2024-11-22 02:22:04,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-22 02:22:04,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:04,538 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:04,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 02:22:04,538 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:04,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:04,539 INFO L85 PathProgramCache]: Analyzing trace with hash -829990638, now seen corresponding path program 1 times [2024-11-22 02:22:04,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:04,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879470251] [2024-11-22 02:22:04,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:04,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:04,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:22:04,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:04,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879470251] [2024-11-22 02:22:04,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879470251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:04,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:04,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:04,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787046237] [2024-11-22 02:22:04,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:04,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:04,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:04,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:04,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:04,678 INFO L87 Difference]: Start difference. First operand 720 states and 1039 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-22 02:22:04,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:04,733 INFO L93 Difference]: Finished difference Result 1347 states and 1980 transitions. [2024-11-22 02:22:04,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 02:22:04,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 68 [2024-11-22 02:22:04,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:04,737 INFO L225 Difference]: With dead ends: 1347 [2024-11-22 02:22:04,737 INFO L226 Difference]: Without dead ends: 740 [2024-11-22 02:22:04,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:22:04,739 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 4 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:04,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 756 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:04,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2024-11-22 02:22:04,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 740. [2024-11-22 02:22:04,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 570 states have (on average 1.4157894736842105) internal successors, (807), 573 states have internal predecessors, (807), 124 states have call successors, (124), 45 states have call predecessors, (124), 45 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-22 02:22:04,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1055 transitions. [2024-11-22 02:22:04,771 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1055 transitions. Word has length 68 [2024-11-22 02:22:04,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:04,771 INFO L471 AbstractCegarLoop]: Abstraction has 740 states and 1055 transitions. [2024-11-22 02:22:04,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-22 02:22:04,772 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1055 transitions. [2024-11-22 02:22:04,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-22 02:22:04,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:04,774 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:04,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 02:22:04,774 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:04,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:04,775 INFO L85 PathProgramCache]: Analyzing trace with hash 102970172, now seen corresponding path program 1 times [2024-11-22 02:22:04,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:04,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187322871] [2024-11-22 02:22:04,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:04,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:04,887 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:22:04,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:04,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187322871] [2024-11-22 02:22:04,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187322871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:04,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:04,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:04,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253329437] [2024-11-22 02:22:04,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:04,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:04,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:04,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:04,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:04,889 INFO L87 Difference]: Start difference. First operand 740 states and 1055 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-22 02:22:04,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:04,936 INFO L93 Difference]: Finished difference Result 1383 states and 1996 transitions. [2024-11-22 02:22:04,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 02:22:04,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2024-11-22 02:22:04,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:04,945 INFO L225 Difference]: With dead ends: 1383 [2024-11-22 02:22:04,945 INFO L226 Difference]: Without dead ends: 756 [2024-11-22 02:22:04,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:22:04,947 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 3 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:04,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 766 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:04,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2024-11-22 02:22:05,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 756. [2024-11-22 02:22:05,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 582 states have (on average 1.407216494845361) internal successors, (819), 585 states have internal predecessors, (819), 124 states have call successors, (124), 49 states have call predecessors, (124), 49 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-22 02:22:05,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1067 transitions. [2024-11-22 02:22:05,008 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1067 transitions. Word has length 76 [2024-11-22 02:22:05,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:05,008 INFO L471 AbstractCegarLoop]: Abstraction has 756 states and 1067 transitions. [2024-11-22 02:22:05,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-22 02:22:05,008 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1067 transitions. [2024-11-22 02:22:05,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-22 02:22:05,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:05,010 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:05,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 02:22:05,010 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:05,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:05,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1795537821, now seen corresponding path program 1 times [2024-11-22 02:22:05,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:05,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643893853] [2024-11-22 02:22:05,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:05,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:22:05,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:05,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643893853] [2024-11-22 02:22:05,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643893853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:05,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:05,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:05,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443036739] [2024-11-22 02:22:05,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:05,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:05,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:05,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:05,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:05,162 INFO L87 Difference]: Start difference. First operand 756 states and 1067 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-22 02:22:05,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:05,223 INFO L93 Difference]: Finished difference Result 1419 states and 2036 transitions. [2024-11-22 02:22:05,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 02:22:05,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2024-11-22 02:22:05,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:05,227 INFO L225 Difference]: With dead ends: 1419 [2024-11-22 02:22:05,227 INFO L226 Difference]: Without dead ends: 776 [2024-11-22 02:22:05,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:22:05,230 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 4 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:05,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 756 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:05,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2024-11-22 02:22:05,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 776. [2024-11-22 02:22:05,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 598 states have (on average 1.3963210702341138) internal successors, (835), 601 states have internal predecessors, (835), 124 states have call successors, (124), 53 states have call predecessors, (124), 53 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-22 02:22:05,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1083 transitions. [2024-11-22 02:22:05,260 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1083 transitions. Word has length 76 [2024-11-22 02:22:05,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:05,260 INFO L471 AbstractCegarLoop]: Abstraction has 776 states and 1083 transitions. [2024-11-22 02:22:05,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-22 02:22:05,260 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1083 transitions. [2024-11-22 02:22:05,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-22 02:22:05,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:05,262 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:05,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 02:22:05,263 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:05,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:05,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1351818595, now seen corresponding path program 1 times [2024-11-22 02:22:05,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:05,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823350876] [2024-11-22 02:22:05,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:05,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:05,450 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 02:22:05,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:05,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823350876] [2024-11-22 02:22:05,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823350876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:05,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:05,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:05,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468009659] [2024-11-22 02:22:05,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:05,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:05,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:05,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:05,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:05,453 INFO L87 Difference]: Start difference. First operand 776 states and 1083 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-22 02:22:05,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:05,507 INFO L93 Difference]: Finished difference Result 1463 states and 2064 transitions. [2024-11-22 02:22:05,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 02:22:05,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 84 [2024-11-22 02:22:05,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:05,512 INFO L225 Difference]: With dead ends: 1463 [2024-11-22 02:22:05,512 INFO L226 Difference]: Without dead ends: 800 [2024-11-22 02:22:05,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:22:05,515 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 5 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:05,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 768 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:05,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2024-11-22 02:22:05,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 800. [2024-11-22 02:22:05,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 618 states have (on average 1.383495145631068) internal successors, (855), 621 states have internal predecessors, (855), 124 states have call successors, (124), 57 states have call predecessors, (124), 57 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-22 02:22:05,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1103 transitions. [2024-11-22 02:22:05,552 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1103 transitions. Word has length 84 [2024-11-22 02:22:05,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:05,552 INFO L471 AbstractCegarLoop]: Abstraction has 800 states and 1103 transitions. [2024-11-22 02:22:05,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-22 02:22:05,553 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1103 transitions. [2024-11-22 02:22:05,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-22 02:22:05,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:05,555 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:05,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 02:22:05,555 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:05,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:05,556 INFO L85 PathProgramCache]: Analyzing trace with hash 938140804, now seen corresponding path program 1 times [2024-11-22 02:22:05,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:05,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808801766] [2024-11-22 02:22:05,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:05,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:05,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-22 02:22:05,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:05,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808801766] [2024-11-22 02:22:05,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808801766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:05,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:05,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 02:22:05,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372595477] [2024-11-22 02:22:05,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:05,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 02:22:05,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:05,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 02:22:05,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:22:05,989 INFO L87 Difference]: Start difference. First operand 800 states and 1103 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 02:22:06,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:06,263 INFO L93 Difference]: Finished difference Result 2059 states and 2829 transitions. [2024-11-22 02:22:06,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:22:06,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 87 [2024-11-22 02:22:06,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:06,270 INFO L225 Difference]: With dead ends: 2059 [2024-11-22 02:22:06,270 INFO L226 Difference]: Without dead ends: 1372 [2024-11-22 02:22:06,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-22 02:22:06,272 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 197 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:06,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1482 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:22:06,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2024-11-22 02:22:06,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1084. [2024-11-22 02:22:06,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 829 states have (on average 1.3715319662243668) internal successors, (1137), 834 states have internal predecessors, (1137), 172 states have call successors, (172), 82 states have call predecessors, (172), 82 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2024-11-22 02:22:06,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1481 transitions. [2024-11-22 02:22:06,330 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1481 transitions. Word has length 87 [2024-11-22 02:22:06,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:06,331 INFO L471 AbstractCegarLoop]: Abstraction has 1084 states and 1481 transitions. [2024-11-22 02:22:06,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 02:22:06,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1481 transitions. [2024-11-22 02:22:06,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-22 02:22:06,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:06,332 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:06,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 02:22:06,332 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:06,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:06,333 INFO L85 PathProgramCache]: Analyzing trace with hash -262931398, now seen corresponding path program 1 times [2024-11-22 02:22:06,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:06,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958956426] [2024-11-22 02:22:06,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:06,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:06,453 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-22 02:22:06,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:06,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958956426] [2024-11-22 02:22:06,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958956426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:06,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:06,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:06,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171683946] [2024-11-22 02:22:06,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:06,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:06,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:06,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:06,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:06,455 INFO L87 Difference]: Start difference. First operand 1084 states and 1481 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 02:22:06,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:06,525 INFO L93 Difference]: Finished difference Result 2011 states and 2772 transitions. [2024-11-22 02:22:06,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 02:22:06,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 91 [2024-11-22 02:22:06,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:06,531 INFO L225 Difference]: With dead ends: 2011 [2024-11-22 02:22:06,531 INFO L226 Difference]: Without dead ends: 1108 [2024-11-22 02:22:06,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:22:06,534 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 3 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:06,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 766 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:06,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2024-11-22 02:22:06,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1108. [2024-11-22 02:22:06,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 847 states have (on average 1.3636363636363635) internal successors, (1155), 852 states have internal predecessors, (1155), 172 states have call successors, (172), 88 states have call predecessors, (172), 88 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2024-11-22 02:22:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1499 transitions. [2024-11-22 02:22:06,617 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1499 transitions. Word has length 91 [2024-11-22 02:22:06,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:06,618 INFO L471 AbstractCegarLoop]: Abstraction has 1108 states and 1499 transitions. [2024-11-22 02:22:06,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 02:22:06,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1499 transitions. [2024-11-22 02:22:06,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-22 02:22:06,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:06,620 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:06,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 02:22:06,620 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:06,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:06,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1171844932, now seen corresponding path program 1 times [2024-11-22 02:22:06,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:06,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878317451] [2024-11-22 02:22:06,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:06,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:06,885 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 02:22:06,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:06,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878317451] [2024-11-22 02:22:06,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878317451] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:22:06,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310199692] [2024-11-22 02:22:06,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:06,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:22:06,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:22:06,890 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:22:06,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 02:22:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:07,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 02:22:07,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:22:07,144 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 02:22:07,144 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 02:22:07,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310199692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:07,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 02:22:07,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-11-22 02:22:07,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863731690] [2024-11-22 02:22:07,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:07,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 02:22:07,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:07,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 02:22:07,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-11-22 02:22:07,146 INFO L87 Difference]: Start difference. First operand 1108 states and 1499 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 02:22:07,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:07,327 INFO L93 Difference]: Finished difference Result 2377 states and 3341 transitions. [2024-11-22 02:22:07,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 02:22:07,327 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 90 [2024-11-22 02:22:07,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:07,335 INFO L225 Difference]: With dead ends: 2377 [2024-11-22 02:22:07,335 INFO L226 Difference]: Without dead ends: 1538 [2024-11-22 02:22:07,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:22:07,337 INFO L432 NwaCegarLoop]: 440 mSDtfsCounter, 140 mSDsluCounter, 2439 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 2879 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:07,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 2879 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:22:07,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2024-11-22 02:22:07,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1116. [2024-11-22 02:22:07,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 851 states have (on average 1.354876615746181) internal successors, (1153), 858 states have internal predecessors, (1153), 174 states have call successors, (174), 90 states have call predecessors, (174), 90 states have return successors, (174), 167 states have call predecessors, (174), 174 states have call successors, (174) [2024-11-22 02:22:07,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1501 transitions. [2024-11-22 02:22:07,402 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1501 transitions. Word has length 90 [2024-11-22 02:22:07,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:07,403 INFO L471 AbstractCegarLoop]: Abstraction has 1116 states and 1501 transitions. [2024-11-22 02:22:07,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 02:22:07,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1501 transitions. [2024-11-22 02:22:07,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-22 02:22:07,404 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:07,404 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:07,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 02:22:07,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-22 02:22:07,609 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:07,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:07,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1049695796, now seen corresponding path program 1 times [2024-11-22 02:22:07,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:07,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594784956] [2024-11-22 02:22:07,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:07,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:07,721 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 02:22:07,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:07,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594784956] [2024-11-22 02:22:07,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594784956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:07,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:07,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 02:22:07,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617208726] [2024-11-22 02:22:07,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:07,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 02:22:07,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:07,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 02:22:07,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:22:07,724 INFO L87 Difference]: Start difference. First operand 1116 states and 1501 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 02:22:07,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:07,872 INFO L93 Difference]: Finished difference Result 2016 states and 2722 transitions. [2024-11-22 02:22:07,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:22:07,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 93 [2024-11-22 02:22:07,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:07,878 INFO L225 Difference]: With dead ends: 2016 [2024-11-22 02:22:07,878 INFO L226 Difference]: Without dead ends: 1163 [2024-11-22 02:22:07,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-22 02:22:07,881 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 256 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:07,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1491 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:22:07,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2024-11-22 02:22:07,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1121. [2024-11-22 02:22:07,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 867 states have (on average 1.3471741637831602) internal successors, (1168), 879 states have internal predecessors, (1168), 162 states have call successors, (162), 91 states have call predecessors, (162), 91 states have return successors, (162), 150 states have call predecessors, (162), 162 states have call successors, (162) [2024-11-22 02:22:07,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1492 transitions. [2024-11-22 02:22:07,955 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1492 transitions. Word has length 93 [2024-11-22 02:22:07,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:07,955 INFO L471 AbstractCegarLoop]: Abstraction has 1121 states and 1492 transitions. [2024-11-22 02:22:07,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 02:22:07,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1492 transitions. [2024-11-22 02:22:07,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-22 02:22:07,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:07,956 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:07,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 02:22:07,957 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:07,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:07,957 INFO L85 PathProgramCache]: Analyzing trace with hash 82901354, now seen corresponding path program 1 times [2024-11-22 02:22:07,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:07,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850494836] [2024-11-22 02:22:07,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:07,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:08,363 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 02:22:08,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:08,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850494836] [2024-11-22 02:22:08,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850494836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:08,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:08,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 02:22:08,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181162945] [2024-11-22 02:22:08,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:08,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 02:22:08,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:08,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 02:22:08,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:22:08,367 INFO L87 Difference]: Start difference. First operand 1121 states and 1492 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 02:22:08,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:08,543 INFO L93 Difference]: Finished difference Result 1997 states and 2669 transitions. [2024-11-22 02:22:08,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:22:08,543 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 95 [2024-11-22 02:22:08,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:08,548 INFO L225 Difference]: With dead ends: 1997 [2024-11-22 02:22:08,548 INFO L226 Difference]: Without dead ends: 1119 [2024-11-22 02:22:08,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-22 02:22:08,550 INFO L432 NwaCegarLoop]: 289 mSDtfsCounter, 151 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:08,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1607 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:22:08,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2024-11-22 02:22:08,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1011. [2024-11-22 02:22:08,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 784 states have (on average 1.3494897959183674) internal successors, (1058), 794 states have internal predecessors, (1058), 145 states have call successors, (145), 81 states have call predecessors, (145), 81 states have return successors, (145), 135 states have call predecessors, (145), 145 states have call successors, (145) [2024-11-22 02:22:08,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1348 transitions. [2024-11-22 02:22:08,596 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1348 transitions. Word has length 95 [2024-11-22 02:22:08,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:08,596 INFO L471 AbstractCegarLoop]: Abstraction has 1011 states and 1348 transitions. [2024-11-22 02:22:08,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 02:22:08,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1348 transitions. [2024-11-22 02:22:08,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-22 02:22:08,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:08,597 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:08,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 02:22:08,598 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:08,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:08,598 INFO L85 PathProgramCache]: Analyzing trace with hash -914641030, now seen corresponding path program 1 times [2024-11-22 02:22:08,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:08,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162407167] [2024-11-22 02:22:08,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:08,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:08,995 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 02:22:08,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:08,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162407167] [2024-11-22 02:22:08,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162407167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:08,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:08,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 02:22:08,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773833943] [2024-11-22 02:22:08,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:08,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 02:22:08,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:08,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 02:22:08,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:22:08,997 INFO L87 Difference]: Start difference. First operand 1011 states and 1348 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 02:22:09,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:09,292 INFO L93 Difference]: Finished difference Result 1929 states and 2557 transitions. [2024-11-22 02:22:09,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:22:09,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 96 [2024-11-22 02:22:09,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:09,297 INFO L225 Difference]: With dead ends: 1929 [2024-11-22 02:22:09,297 INFO L226 Difference]: Without dead ends: 1081 [2024-11-22 02:22:09,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-22 02:22:09,299 INFO L432 NwaCegarLoop]: 283 mSDtfsCounter, 411 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:09,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1271 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:22:09,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2024-11-22 02:22:09,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1027. [2024-11-22 02:22:09,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 792 states have (on average 1.327020202020202) internal successors, (1051), 803 states have internal predecessors, (1051), 148 states have call successors, (148), 86 states have call predecessors, (148), 86 states have return successors, (148), 137 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-22 02:22:09,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1347 transitions. [2024-11-22 02:22:09,375 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1347 transitions. Word has length 96 [2024-11-22 02:22:09,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:09,376 INFO L471 AbstractCegarLoop]: Abstraction has 1027 states and 1347 transitions. [2024-11-22 02:22:09,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 02:22:09,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1347 transitions. [2024-11-22 02:22:09,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-22 02:22:09,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:09,377 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:09,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 02:22:09,377 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:09,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:09,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1010886925, now seen corresponding path program 1 times [2024-11-22 02:22:09,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:09,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792621555] [2024-11-22 02:22:09,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:09,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 02:22:09,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:09,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792621555] [2024-11-22 02:22:09,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792621555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:09,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:09,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:09,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566131536] [2024-11-22 02:22:09,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:09,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:09,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:09,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:09,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:09,447 INFO L87 Difference]: Start difference. First operand 1027 states and 1347 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 02:22:09,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:09,587 INFO L93 Difference]: Finished difference Result 2702 states and 3567 transitions. [2024-11-22 02:22:09,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:22:09,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2024-11-22 02:22:09,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:09,595 INFO L225 Difference]: With dead ends: 2702 [2024-11-22 02:22:09,595 INFO L226 Difference]: Without dead ends: 1889 [2024-11-22 02:22:09,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:22:09,598 INFO L432 NwaCegarLoop]: 461 mSDtfsCounter, 202 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:09,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 1154 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:09,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2024-11-22 02:22:09,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1772. [2024-11-22 02:22:09,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1772 states, 1347 states have (on average 1.3199703043801039) internal successors, (1778), 1366 states have internal predecessors, (1778), 272 states have call successors, (272), 152 states have call predecessors, (272), 152 states have return successors, (272), 253 states have call predecessors, (272), 272 states have call successors, (272) [2024-11-22 02:22:09,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2322 transitions. [2024-11-22 02:22:09,702 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2322 transitions. Word has length 97 [2024-11-22 02:22:09,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:09,702 INFO L471 AbstractCegarLoop]: Abstraction has 1772 states and 2322 transitions. [2024-11-22 02:22:09,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 02:22:09,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2322 transitions. [2024-11-22 02:22:09,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-22 02:22:09,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:09,704 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:09,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 02:22:09,704 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:09,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:09,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1421619842, now seen corresponding path program 1 times [2024-11-22 02:22:09,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:09,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753296378] [2024-11-22 02:22:09,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:09,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:10,023 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 02:22:10,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:10,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753296378] [2024-11-22 02:22:10,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753296378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:10,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:10,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 02:22:10,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863642781] [2024-11-22 02:22:10,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:10,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 02:22:10,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:10,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 02:22:10,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:22:10,027 INFO L87 Difference]: Start difference. First operand 1772 states and 2322 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 02:22:10,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:10,462 INFO L93 Difference]: Finished difference Result 3445 states and 4513 transitions. [2024-11-22 02:22:10,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:22:10,463 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2024-11-22 02:22:10,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:10,471 INFO L225 Difference]: With dead ends: 3445 [2024-11-22 02:22:10,471 INFO L226 Difference]: Without dead ends: 1969 [2024-11-22 02:22:10,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-22 02:22:10,475 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 523 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:10,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 1436 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:22:10,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1969 states. [2024-11-22 02:22:10,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1969 to 1797. [2024-11-22 02:22:10,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1359 states have (on average 1.3142016188373804) internal successors, (1786), 1379 states have internal predecessors, (1786), 280 states have call successors, (280), 157 states have call predecessors, (280), 157 states have return successors, (280), 260 states have call predecessors, (280), 280 states have call successors, (280) [2024-11-22 02:22:10,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2346 transitions. [2024-11-22 02:22:10,603 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2346 transitions. Word has length 99 [2024-11-22 02:22:10,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:10,604 INFO L471 AbstractCegarLoop]: Abstraction has 1797 states and 2346 transitions. [2024-11-22 02:22:10,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 02:22:10,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2346 transitions. [2024-11-22 02:22:10,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-22 02:22:10,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:10,605 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:10,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 02:22:10,606 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:10,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:10,606 INFO L85 PathProgramCache]: Analyzing trace with hash 506581735, now seen corresponding path program 1 times [2024-11-22 02:22:10,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:10,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874415452] [2024-11-22 02:22:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:10,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:10,681 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 02:22:10,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:10,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874415452] [2024-11-22 02:22:10,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874415452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:10,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:10,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:10,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435575407] [2024-11-22 02:22:10,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:10,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:10,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:10,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:10,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:10,684 INFO L87 Difference]: Start difference. First operand 1797 states and 2346 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 02:22:10,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:10,980 INFO L93 Difference]: Finished difference Result 4559 states and 5986 transitions. [2024-11-22 02:22:10,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:22:10,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2024-11-22 02:22:10,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:10,992 INFO L225 Difference]: With dead ends: 4559 [2024-11-22 02:22:10,993 INFO L226 Difference]: Without dead ends: 3099 [2024-11-22 02:22:10,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:22:10,997 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 208 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:10,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 1192 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:10,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3099 states. [2024-11-22 02:22:11,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3099 to 2818. [2024-11-22 02:22:11,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2818 states, 2105 states have (on average 1.3049881235154395) internal successors, (2747), 2136 states have internal predecessors, (2747), 460 states have call successors, (460), 252 states have call predecessors, (460), 252 states have return successors, (460), 429 states have call predecessors, (460), 460 states have call successors, (460) [2024-11-22 02:22:11,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2818 states to 2818 states and 3667 transitions. [2024-11-22 02:22:11,218 INFO L78 Accepts]: Start accepts. Automaton has 2818 states and 3667 transitions. Word has length 101 [2024-11-22 02:22:11,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:11,219 INFO L471 AbstractCegarLoop]: Abstraction has 2818 states and 3667 transitions. [2024-11-22 02:22:11,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 02:22:11,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2818 states and 3667 transitions. [2024-11-22 02:22:11,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-22 02:22:11,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:11,221 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:11,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 02:22:11,221 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:11,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:11,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1826960265, now seen corresponding path program 1 times [2024-11-22 02:22:11,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:11,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674162209] [2024-11-22 02:22:11,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:11,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:11,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 02:22:11,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:11,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674162209] [2024-11-22 02:22:11,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674162209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:11,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:11,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:11,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058553903] [2024-11-22 02:22:11,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:11,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:11,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:11,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:11,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:11,297 INFO L87 Difference]: Start difference. First operand 2818 states and 3667 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 02:22:11,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:11,628 INFO L93 Difference]: Finished difference Result 6581 states and 8604 transitions. [2024-11-22 02:22:11,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:22:11,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2024-11-22 02:22:11,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:11,650 INFO L225 Difference]: With dead ends: 6581 [2024-11-22 02:22:11,654 INFO L226 Difference]: Without dead ends: 4220 [2024-11-22 02:22:11,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:22:11,662 INFO L432 NwaCegarLoop]: 488 mSDtfsCounter, 201 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:11,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1206 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:11,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4220 states. [2024-11-22 02:22:11,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4220 to 4035. [2024-11-22 02:22:11,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4035 states, 2998 states have (on average 1.301200800533689) internal successors, (3901), 3042 states have internal predecessors, (3901), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2024-11-22 02:22:11,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4035 states to 4035 states and 5245 transitions. [2024-11-22 02:22:12,001 INFO L78 Accepts]: Start accepts. Automaton has 4035 states and 5245 transitions. Word has length 101 [2024-11-22 02:22:12,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:12,001 INFO L471 AbstractCegarLoop]: Abstraction has 4035 states and 5245 transitions. [2024-11-22 02:22:12,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 02:22:12,005 INFO L276 IsEmpty]: Start isEmpty. Operand 4035 states and 5245 transitions. [2024-11-22 02:22:12,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-22 02:22:12,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:12,007 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:12,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-22 02:22:12,007 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:12,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:12,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1131002330, now seen corresponding path program 1 times [2024-11-22 02:22:12,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:12,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884185471] [2024-11-22 02:22:12,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:12,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:12,046 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 02:22:12,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:12,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884185471] [2024-11-22 02:22:12,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884185471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:12,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:12,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:22:12,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483102619] [2024-11-22 02:22:12,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:12,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:22:12,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:12,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:22:12,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:22:12,049 INFO L87 Difference]: Start difference. First operand 4035 states and 5245 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 02:22:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:12,373 INFO L93 Difference]: Finished difference Result 7749 states and 10121 transitions. [2024-11-22 02:22:12,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:22:12,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2024-11-22 02:22:12,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:12,392 INFO L225 Difference]: With dead ends: 7749 [2024-11-22 02:22:12,393 INFO L226 Difference]: Without dead ends: 4068 [2024-11-22 02:22:12,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:22:12,401 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 6 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:12,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 489 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:12,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4068 states. [2024-11-22 02:22:12,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4068 to 4041. [2024-11-22 02:22:12,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4041 states, 3004 states have (on average 1.3005992010652463) internal successors, (3907), 3048 states have internal predecessors, (3907), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2024-11-22 02:22:12,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4041 states to 4041 states and 5251 transitions. [2024-11-22 02:22:12,814 INFO L78 Accepts]: Start accepts. Automaton has 4041 states and 5251 transitions. Word has length 102 [2024-11-22 02:22:12,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:12,815 INFO L471 AbstractCegarLoop]: Abstraction has 4041 states and 5251 transitions. [2024-11-22 02:22:12,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 02:22:12,815 INFO L276 IsEmpty]: Start isEmpty. Operand 4041 states and 5251 transitions. [2024-11-22 02:22:12,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-22 02:22:12,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:12,817 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:12,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-22 02:22:12,817 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:12,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:12,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1347241870, now seen corresponding path program 1 times [2024-11-22 02:22:12,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:12,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239504216] [2024-11-22 02:22:12,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:12,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:12,919 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 02:22:12,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:12,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239504216] [2024-11-22 02:22:12,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239504216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:12,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:12,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:12,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975360416] [2024-11-22 02:22:12,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:12,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:12,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:12,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:12,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:12,921 INFO L87 Difference]: Start difference. First operand 4041 states and 5251 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 02:22:13,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:13,175 INFO L93 Difference]: Finished difference Result 7714 states and 10048 transitions. [2024-11-22 02:22:13,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 02:22:13,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 103 [2024-11-22 02:22:13,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:13,191 INFO L225 Difference]: With dead ends: 7714 [2024-11-22 02:22:13,192 INFO L226 Difference]: Without dead ends: 3749 [2024-11-22 02:22:13,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:22:13,202 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 83 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:13,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 749 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:13,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3749 states. [2024-11-22 02:22:13,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3749 to 3686. [2024-11-22 02:22:13,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3686 states, 2732 states have (on average 1.3100292825768667) internal successors, (3579), 2766 states have internal predecessors, (3579), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2024-11-22 02:22:13,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 4819 transitions. [2024-11-22 02:22:13,451 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 4819 transitions. Word has length 103 [2024-11-22 02:22:13,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:13,452 INFO L471 AbstractCegarLoop]: Abstraction has 3686 states and 4819 transitions. [2024-11-22 02:22:13,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 02:22:13,454 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 4819 transitions. [2024-11-22 02:22:13,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-22 02:22:13,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:13,456 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:13,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-22 02:22:13,456 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:13,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:13,456 INFO L85 PathProgramCache]: Analyzing trace with hash -2076713750, now seen corresponding path program 1 times [2024-11-22 02:22:13,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:13,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535595929] [2024-11-22 02:22:13,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:13,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:13,526 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 02:22:13,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:13,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535595929] [2024-11-22 02:22:13,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535595929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:13,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:13,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:22:13,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158654760] [2024-11-22 02:22:13,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:13,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:22:13,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:13,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:22:13,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:22:13,528 INFO L87 Difference]: Start difference. First operand 3686 states and 4819 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 02:22:13,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:13,766 INFO L93 Difference]: Finished difference Result 7201 states and 9447 transitions. [2024-11-22 02:22:13,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:22:13,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2024-11-22 02:22:13,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:13,781 INFO L225 Difference]: With dead ends: 7201 [2024-11-22 02:22:13,781 INFO L226 Difference]: Without dead ends: 3696 [2024-11-22 02:22:13,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:22:13,790 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 0 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:13,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 487 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:13,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3696 states. [2024-11-22 02:22:14,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3696 to 3696. [2024-11-22 02:22:14,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3696 states, 2742 states have (on average 1.3088986141502552) internal successors, (3589), 2776 states have internal predecessors, (3589), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2024-11-22 02:22:14,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3696 states to 3696 states and 4829 transitions. [2024-11-22 02:22:14,059 INFO L78 Accepts]: Start accepts. Automaton has 3696 states and 4829 transitions. Word has length 104 [2024-11-22 02:22:14,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:14,060 INFO L471 AbstractCegarLoop]: Abstraction has 3696 states and 4829 transitions. [2024-11-22 02:22:14,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 02:22:14,060 INFO L276 IsEmpty]: Start isEmpty. Operand 3696 states and 4829 transitions. [2024-11-22 02:22:14,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-22 02:22:14,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:14,061 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:14,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-22 02:22:14,062 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:14,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:14,062 INFO L85 PathProgramCache]: Analyzing trace with hash -2022352177, now seen corresponding path program 1 times [2024-11-22 02:22:14,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:14,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581609199] [2024-11-22 02:22:14,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:14,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 02:22:14,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:14,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581609199] [2024-11-22 02:22:14,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581609199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:14,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:14,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:22:14,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98827991] [2024-11-22 02:22:14,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:14,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:22:14,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:14,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:22:14,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:22:14,171 INFO L87 Difference]: Start difference. First operand 3696 states and 4829 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 02:22:14,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:14,388 INFO L93 Difference]: Finished difference Result 7193 states and 9419 transitions. [2024-11-22 02:22:14,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 02:22:14,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2024-11-22 02:22:14,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:14,407 INFO L225 Difference]: With dead ends: 7193 [2024-11-22 02:22:14,408 INFO L226 Difference]: Without dead ends: 3616 [2024-11-22 02:22:14,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:22:14,417 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 64 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:14,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 759 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:14,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3616 states. [2024-11-22 02:22:14,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3616 to 2785. [2024-11-22 02:22:14,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2065 states have (on average 1.3036319612590799) internal successors, (2692), 2084 states have internal predecessors, (2692), 469 states have call successors, (469), 250 states have call predecessors, (469), 250 states have return successors, (469), 450 states have call predecessors, (469), 469 states have call successors, (469) [2024-11-22 02:22:14,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 3630 transitions. [2024-11-22 02:22:14,725 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 3630 transitions. Word has length 104 [2024-11-22 02:22:14,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:14,725 INFO L471 AbstractCegarLoop]: Abstraction has 2785 states and 3630 transitions. [2024-11-22 02:22:14,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 02:22:14,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 3630 transitions. [2024-11-22 02:22:14,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-22 02:22:14,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:14,730 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:14,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-22 02:22:14,730 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:14,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:14,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1445089110, now seen corresponding path program 1 times [2024-11-22 02:22:14,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:14,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839727883] [2024-11-22 02:22:14,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:14,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:15,523 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:22:15,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:15,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839727883] [2024-11-22 02:22:15,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839727883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:22:15,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914694315] [2024-11-22 02:22:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:15,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:22:15,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:22:15,526 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:22:15,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 02:22:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:15,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 02:22:15,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:22:15,766 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-22 02:22:15,767 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 02:22:15,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914694315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:15,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 02:22:15,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-22 02:22:15,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329593503] [2024-11-22 02:22:15,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:15,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:22:15,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:15,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:22:15,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-22 02:22:15,769 INFO L87 Difference]: Start difference. First operand 2785 states and 3630 transitions. Second operand has 5 states, 4 states have (on average 24.5) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-22 02:22:15,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:15,988 INFO L93 Difference]: Finished difference Result 5240 states and 6871 transitions. [2024-11-22 02:22:15,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:22:15,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.5) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 154 [2024-11-22 02:22:15,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:16,000 INFO L225 Difference]: With dead ends: 5240 [2024-11-22 02:22:16,001 INFO L226 Difference]: Without dead ends: 2614 [2024-11-22 02:22:16,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-22 02:22:16,010 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 0 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:16,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1024 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:22:16,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2024-11-22 02:22:16,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 2598. [2024-11-22 02:22:16,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2598 states, 1923 states have (on average 1.3000520020800832) internal successors, (2500), 1940 states have internal predecessors, (2500), 440 states have call successors, (440), 234 states have call predecessors, (440), 234 states have return successors, (440), 423 states have call predecessors, (440), 440 states have call successors, (440) [2024-11-22 02:22:16,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2598 states to 2598 states and 3380 transitions. [2024-11-22 02:22:16,228 INFO L78 Accepts]: Start accepts. Automaton has 2598 states and 3380 transitions. Word has length 154 [2024-11-22 02:22:16,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:16,228 INFO L471 AbstractCegarLoop]: Abstraction has 2598 states and 3380 transitions. [2024-11-22 02:22:16,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.5) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-22 02:22:16,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2598 states and 3380 transitions. [2024-11-22 02:22:16,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-22 02:22:16,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:16,232 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:16,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 02:22:16,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-22 02:22:16,433 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:16,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:16,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1661978996, now seen corresponding path program 1 times [2024-11-22 02:22:16,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:16,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200349532] [2024-11-22 02:22:16,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:16,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:16,972 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:22:16,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:16,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200349532] [2024-11-22 02:22:16,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200349532] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:22:16,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446170189] [2024-11-22 02:22:16,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:16,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:22:16,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:22:16,975 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:22:16,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 02:22:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:17,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-22 02:22:17,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:22:17,439 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 32 proven. 44 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 02:22:17,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:22:17,722 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:22:17,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446170189] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:22:17,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:22:17,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 24 [2024-11-22 02:22:17,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578086900] [2024-11-22 02:22:17,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:22:17,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-22 02:22:17,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:17,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-22 02:22:17,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-11-22 02:22:17,726 INFO L87 Difference]: Start difference. First operand 2598 states and 3380 transitions. Second operand has 24 states, 24 states have (on average 10.958333333333334) internal successors, (263), 22 states have internal predecessors, (263), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) [2024-11-22 02:22:21,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:21,534 INFO L93 Difference]: Finished difference Result 7590 states and 9908 transitions. [2024-11-22 02:22:21,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-22 02:22:21,535 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.958333333333334) internal successors, (263), 22 states have internal predecessors, (263), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) Word has length 156 [2024-11-22 02:22:21,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:21,561 INFO L225 Difference]: With dead ends: 7590 [2024-11-22 02:22:21,562 INFO L226 Difference]: Without dead ends: 5234 [2024-11-22 02:22:21,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1798 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1040, Invalid=6100, Unknown=0, NotChecked=0, Total=7140 [2024-11-22 02:22:21,573 INFO L432 NwaCegarLoop]: 656 mSDtfsCounter, 2429 mSDsluCounter, 7847 mSDsCounter, 0 mSdLazyCounter, 3806 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2429 SdHoareTripleChecker+Valid, 8503 SdHoareTripleChecker+Invalid, 4726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 3806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:21,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2429 Valid, 8503 Invalid, 4726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 3806 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-22 02:22:21,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5234 states. [2024-11-22 02:22:21,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5234 to 4543. [2024-11-22 02:22:21,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4543 states, 3363 states have (on average 1.303895331549212) internal successors, (4385), 3392 states have internal predecessors, (4385), 765 states have call successors, (765), 414 states have call predecessors, (765), 414 states have return successors, (765), 736 states have call predecessors, (765), 765 states have call successors, (765) [2024-11-22 02:22:21,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4543 states to 4543 states and 5915 transitions. [2024-11-22 02:22:21,966 INFO L78 Accepts]: Start accepts. Automaton has 4543 states and 5915 transitions. Word has length 156 [2024-11-22 02:22:21,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:21,967 INFO L471 AbstractCegarLoop]: Abstraction has 4543 states and 5915 transitions. [2024-11-22 02:22:21,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.958333333333334) internal successors, (263), 22 states have internal predecessors, (263), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) [2024-11-22 02:22:21,967 INFO L276 IsEmpty]: Start isEmpty. Operand 4543 states and 5915 transitions. [2024-11-22 02:22:21,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 02:22:21,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:21,972 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:21,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 02:22:22,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-22 02:22:22,173 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:22,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:22,174 INFO L85 PathProgramCache]: Analyzing trace with hash -554573914, now seen corresponding path program 1 times [2024-11-22 02:22:22,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:22,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870304439] [2024-11-22 02:22:22,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:22,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:22,462 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:22:22,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:22,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870304439] [2024-11-22 02:22:22,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870304439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:22:22,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250097722] [2024-11-22 02:22:22,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:22,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:22:22,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:22:22,465 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:22:22,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 02:22:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:22,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-22 02:22:22,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:22:23,103 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 61 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 02:22:23,103 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:22:23,646 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:22:23,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250097722] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:22:23,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:22:23,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 11] total 22 [2024-11-22 02:22:23,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996887761] [2024-11-22 02:22:23,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:22:23,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 02:22:23,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:23,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 02:22:23,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-11-22 02:22:23,650 INFO L87 Difference]: Start difference. First operand 4543 states and 5915 transitions. Second operand has 22 states, 22 states have (on average 11.318181818181818) internal successors, (249), 22 states have internal predecessors, (249), 9 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) [2024-11-22 02:22:26,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:26,135 INFO L93 Difference]: Finished difference Result 10750 states and 13983 transitions. [2024-11-22 02:22:26,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-22 02:22:26,136 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.318181818181818) internal successors, (249), 22 states have internal predecessors, (249), 9 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) Word has length 157 [2024-11-22 02:22:26,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:26,158 INFO L225 Difference]: With dead ends: 10750 [2024-11-22 02:22:26,158 INFO L226 Difference]: Without dead ends: 6460 [2024-11-22 02:22:26,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=881, Invalid=2541, Unknown=0, NotChecked=0, Total=3422 [2024-11-22 02:22:26,168 INFO L432 NwaCegarLoop]: 321 mSDtfsCounter, 2383 mSDsluCounter, 2605 mSDsCounter, 0 mSdLazyCounter, 1502 mSolverCounterSat, 830 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2383 SdHoareTripleChecker+Valid, 2926 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 830 IncrementalHoareTripleChecker+Valid, 1502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:26,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2383 Valid, 2926 Invalid, 2332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [830 Valid, 1502 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 02:22:26,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6460 states. [2024-11-22 02:22:26,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6460 to 6130. [2024-11-22 02:22:26,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6130 states, 4532 states have (on average 1.296116504854369) internal successors, (5874), 4572 states have internal predecessors, (5874), 1028 states have call successors, (1028), 569 states have call predecessors, (1028), 569 states have return successors, (1028), 988 states have call predecessors, (1028), 1028 states have call successors, (1028) [2024-11-22 02:22:26,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6130 states to 6130 states and 7930 transitions. [2024-11-22 02:22:26,777 INFO L78 Accepts]: Start accepts. Automaton has 6130 states and 7930 transitions. Word has length 157 [2024-11-22 02:22:26,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:26,779 INFO L471 AbstractCegarLoop]: Abstraction has 6130 states and 7930 transitions. [2024-11-22 02:22:26,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.318181818181818) internal successors, (249), 22 states have internal predecessors, (249), 9 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) [2024-11-22 02:22:26,780 INFO L276 IsEmpty]: Start isEmpty. Operand 6130 states and 7930 transitions. [2024-11-22 02:22:26,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-22 02:22:26,788 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:26,788 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:26,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 02:22:26,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:22:26,989 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:26,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:26,989 INFO L85 PathProgramCache]: Analyzing trace with hash -2129400353, now seen corresponding path program 1 times [2024-11-22 02:22:26,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:26,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252613366] [2024-11-22 02:22:26,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:26,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:27,135 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-22 02:22:27,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:27,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252613366] [2024-11-22 02:22:27,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252613366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:22:27,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:22:27,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 02:22:27,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933471742] [2024-11-22 02:22:27,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:22:27,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 02:22:27,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:27,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 02:22:27,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:22:27,137 INFO L87 Difference]: Start difference. First operand 6130 states and 7930 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 02:22:28,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:28,304 INFO L93 Difference]: Finished difference Result 17980 states and 23320 transitions. [2024-11-22 02:22:28,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:22:28,305 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 159 [2024-11-22 02:22:28,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:28,340 INFO L225 Difference]: With dead ends: 17980 [2024-11-22 02:22:28,341 INFO L226 Difference]: Without dead ends: 12155 [2024-11-22 02:22:28,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-22 02:22:28,351 INFO L432 NwaCegarLoop]: 487 mSDtfsCounter, 224 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:28,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 2584 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:22:28,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12155 states. [2024-11-22 02:22:29,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12155 to 8614. [2024-11-22 02:22:29,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8614 states, 6320 states have (on average 1.2944620253164556) internal successors, (8181), 6378 states have internal predecessors, (8181), 1492 states have call successors, (1492), 801 states have call predecessors, (1492), 801 states have return successors, (1492), 1434 states have call predecessors, (1492), 1492 states have call successors, (1492) [2024-11-22 02:22:29,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8614 states to 8614 states and 11165 transitions. [2024-11-22 02:22:29,308 INFO L78 Accepts]: Start accepts. Automaton has 8614 states and 11165 transitions. Word has length 159 [2024-11-22 02:22:29,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:29,309 INFO L471 AbstractCegarLoop]: Abstraction has 8614 states and 11165 transitions. [2024-11-22 02:22:29,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 02:22:29,309 INFO L276 IsEmpty]: Start isEmpty. Operand 8614 states and 11165 transitions. [2024-11-22 02:22:29,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-22 02:22:29,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:29,320 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:29,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-22 02:22:29,320 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:29,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:29,321 INFO L85 PathProgramCache]: Analyzing trace with hash 713092917, now seen corresponding path program 1 times [2024-11-22 02:22:29,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:29,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943669077] [2024-11-22 02:22:29,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:29,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:22:30,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:30,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943669077] [2024-11-22 02:22:30,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943669077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:22:30,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629668860] [2024-11-22 02:22:30,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:30,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:22:30,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:22:30,444 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:22:30,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 02:22:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:30,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-22 02:22:30,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:22:30,969 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 59 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 02:22:30,969 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:22:31,713 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:22:31,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629668860] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:22:31,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:22:31,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 32 [2024-11-22 02:22:31,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539781127] [2024-11-22 02:22:31,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:22:31,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-22 02:22:31,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:31,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-22 02:22:31,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=863, Unknown=0, NotChecked=0, Total=992 [2024-11-22 02:22:31,715 INFO L87 Difference]: Start difference. First operand 8614 states and 11165 transitions. Second operand has 32 states, 32 states have (on average 8.40625) internal successors, (269), 32 states have internal predecessors, (269), 11 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (37), 11 states have call predecessors, (37), 11 states have call successors, (37) [2024-11-22 02:22:36,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:36,563 INFO L93 Difference]: Finished difference Result 18658 states and 24162 transitions. [2024-11-22 02:22:36,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-22 02:22:36,563 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.40625) internal successors, (269), 32 states have internal predecessors, (269), 11 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (37), 11 states have call predecessors, (37), 11 states have call successors, (37) Word has length 159 [2024-11-22 02:22:36,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:36,603 INFO L225 Difference]: With dead ends: 18658 [2024-11-22 02:22:36,603 INFO L226 Difference]: Without dead ends: 10349 [2024-11-22 02:22:36,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4242 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1974, Invalid=10458, Unknown=0, NotChecked=0, Total=12432 [2024-11-22 02:22:36,621 INFO L432 NwaCegarLoop]: 559 mSDtfsCounter, 4660 mSDsluCounter, 6858 mSDsCounter, 0 mSdLazyCounter, 3773 mSolverCounterSat, 1609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4660 SdHoareTripleChecker+Valid, 7417 SdHoareTripleChecker+Invalid, 5382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1609 IncrementalHoareTripleChecker+Valid, 3773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:36,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4660 Valid, 7417 Invalid, 5382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1609 Valid, 3773 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-22 02:22:36,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10349 states. [2024-11-22 02:22:37,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10349 to 9739. [2024-11-22 02:22:37,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9739 states, 7173 states have (on average 1.2934615920814165) internal successors, (9278), 7239 states have internal predecessors, (9278), 1664 states have call successors, (1664), 901 states have call predecessors, (1664), 901 states have return successors, (1664), 1598 states have call predecessors, (1664), 1664 states have call successors, (1664) [2024-11-22 02:22:37,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9739 states to 9739 states and 12606 transitions. [2024-11-22 02:22:37,736 INFO L78 Accepts]: Start accepts. Automaton has 9739 states and 12606 transitions. Word has length 159 [2024-11-22 02:22:37,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:37,737 INFO L471 AbstractCegarLoop]: Abstraction has 9739 states and 12606 transitions. [2024-11-22 02:22:37,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.40625) internal successors, (269), 32 states have internal predecessors, (269), 11 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (37), 11 states have call predecessors, (37), 11 states have call successors, (37) [2024-11-22 02:22:37,737 INFO L276 IsEmpty]: Start isEmpty. Operand 9739 states and 12606 transitions. [2024-11-22 02:22:37,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-22 02:22:37,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:37,745 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:37,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 02:22:37,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:22:37,947 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:37,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:37,947 INFO L85 PathProgramCache]: Analyzing trace with hash 2096956834, now seen corresponding path program 1 times [2024-11-22 02:22:37,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:37,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675392864] [2024-11-22 02:22:37,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:37,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:38,366 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:22:38,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:38,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675392864] [2024-11-22 02:22:38,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675392864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:22:38,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559080679] [2024-11-22 02:22:38,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:38,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:22:38,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:22:38,369 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:22:38,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 02:22:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:38,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-22 02:22:38,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:22:38,781 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 66 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 02:22:38,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:22:39,103 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:22:39,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559080679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:22:39,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:22:39,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 17 [2024-11-22 02:22:39,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481961278] [2024-11-22 02:22:39,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:22:39,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 02:22:39,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:39,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 02:22:39,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:22:39,105 INFO L87 Difference]: Start difference. First operand 9739 states and 12606 transitions. Second operand has 17 states, 17 states have (on average 12.470588235294118) internal successors, (212), 17 states have internal predecessors, (212), 7 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2024-11-22 02:22:41,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:41,340 INFO L93 Difference]: Finished difference Result 23913 states and 31043 transitions. [2024-11-22 02:22:41,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-22 02:22:41,340 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 12.470588235294118) internal successors, (212), 17 states have internal predecessors, (212), 7 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) Word has length 160 [2024-11-22 02:22:41,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:41,393 INFO L225 Difference]: With dead ends: 23913 [2024-11-22 02:22:41,393 INFO L226 Difference]: Without dead ends: 14479 [2024-11-22 02:22:41,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=268, Invalid=922, Unknown=0, NotChecked=0, Total=1190 [2024-11-22 02:22:41,410 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 1611 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1611 SdHoareTripleChecker+Valid, 2518 SdHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:41,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1611 Valid, 2518 Invalid, 1700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 02:22:41,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14479 states. [2024-11-22 02:22:43,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14479 to 13621. [2024-11-22 02:22:43,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13621 states, 10005 states have (on average 1.296751624187906) internal successors, (12974), 10103 states have internal predecessors, (12974), 2348 states have call successors, (2348), 1267 states have call predecessors, (2348), 1267 states have return successors, (2348), 2250 states have call predecessors, (2348), 2348 states have call successors, (2348) [2024-11-22 02:22:43,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13621 states to 13621 states and 17670 transitions. [2024-11-22 02:22:43,129 INFO L78 Accepts]: Start accepts. Automaton has 13621 states and 17670 transitions. Word has length 160 [2024-11-22 02:22:43,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:43,130 INFO L471 AbstractCegarLoop]: Abstraction has 13621 states and 17670 transitions. [2024-11-22 02:22:43,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.470588235294118) internal successors, (212), 17 states have internal predecessors, (212), 7 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2024-11-22 02:22:43,130 INFO L276 IsEmpty]: Start isEmpty. Operand 13621 states and 17670 transitions. [2024-11-22 02:22:43,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-22 02:22:43,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:43,146 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:43,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 02:22:43,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:22:43,346 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:43,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:43,347 INFO L85 PathProgramCache]: Analyzing trace with hash -2060618077, now seen corresponding path program 1 times [2024-11-22 02:22:43,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:43,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915012234] [2024-11-22 02:22:43,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:43,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:43,834 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:22:43,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:43,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915012234] [2024-11-22 02:22:43,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915012234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:22:43,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357326468] [2024-11-22 02:22:43,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:43,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:22:43,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:22:43,837 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:22:43,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 02:22:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:43,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-22 02:22:44,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:22:44,251 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 54 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 02:22:44,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:22:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:22:44,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357326468] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:22:44,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:22:44,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 19 [2024-11-22 02:22:44,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274138934] [2024-11-22 02:22:44,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:22:44,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 02:22:44,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:44,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 02:22:44,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-22 02:22:44,584 INFO L87 Difference]: Start difference. First operand 13621 states and 17670 transitions. Second operand has 19 states, 19 states have (on average 11.842105263157896) internal successors, (225), 18 states have internal predecessors, (225), 7 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (30), 8 states have call predecessors, (30), 7 states have call successors, (30) [2024-11-22 02:22:47,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:47,872 INFO L93 Difference]: Finished difference Result 33064 states and 43016 transitions. [2024-11-22 02:22:47,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-22 02:22:47,873 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.842105263157896) internal successors, (225), 18 states have internal predecessors, (225), 7 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (30), 8 states have call predecessors, (30), 7 states have call successors, (30) Word has length 161 [2024-11-22 02:22:47,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:47,936 INFO L225 Difference]: With dead ends: 33064 [2024-11-22 02:22:47,936 INFO L226 Difference]: Without dead ends: 19748 [2024-11-22 02:22:47,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 324 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=520, Invalid=2236, Unknown=0, NotChecked=0, Total=2756 [2024-11-22 02:22:47,962 INFO L432 NwaCegarLoop]: 403 mSDtfsCounter, 1446 mSDsluCounter, 3323 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 3726 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:47,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 3726 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 02:22:47,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19748 states. [2024-11-22 02:22:50,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19748 to 19497. [2024-11-22 02:22:50,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19497 states, 14375 states have (on average 1.2979478260869566) internal successors, (18658), 14510 states have internal predecessors, (18658), 3311 states have call successors, (3311), 1810 states have call predecessors, (3311), 1810 states have return successors, (3311), 3176 states have call predecessors, (3311), 3311 states have call successors, (3311) [2024-11-22 02:22:50,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19497 states to 19497 states and 25280 transitions. [2024-11-22 02:22:50,612 INFO L78 Accepts]: Start accepts. Automaton has 19497 states and 25280 transitions. Word has length 161 [2024-11-22 02:22:50,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:22:50,612 INFO L471 AbstractCegarLoop]: Abstraction has 19497 states and 25280 transitions. [2024-11-22 02:22:50,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.842105263157896) internal successors, (225), 18 states have internal predecessors, (225), 7 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (30), 8 states have call predecessors, (30), 7 states have call successors, (30) [2024-11-22 02:22:50,613 INFO L276 IsEmpty]: Start isEmpty. Operand 19497 states and 25280 transitions. [2024-11-22 02:22:50,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-22 02:22:50,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:22:50,625 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:22:50,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 02:22:50,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:22:50,825 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:22:50,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:22:50,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2115039174, now seen corresponding path program 1 times [2024-11-22 02:22:50,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:22:50,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065612428] [2024-11-22 02:22:50,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:50,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:22:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:51,442 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 11 proven. 25 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-22 02:22:51,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:22:51,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065612428] [2024-11-22 02:22:51,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065612428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:22:51,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956088170] [2024-11-22 02:22:51,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:22:51,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:22:51,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:22:51,445 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:22:51,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 02:22:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:22:51,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 02:22:51,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:22:51,861 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 57 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 02:22:51,861 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:22:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:22:52,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956088170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:22:52,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:22:52,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2024-11-22 02:22:52,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523852443] [2024-11-22 02:22:52,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:22:52,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 02:22:52,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:22:52,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 02:22:52,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:22:52,260 INFO L87 Difference]: Start difference. First operand 19497 states and 25280 transitions. Second operand has 23 states, 23 states have (on average 12.043478260869565) internal successors, (277), 22 states have internal predecessors, (277), 9 states have call successors, (40), 5 states have call predecessors, (40), 7 states have return successors, (39), 10 states have call predecessors, (39), 9 states have call successors, (39) [2024-11-22 02:22:59,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:22:59,381 INFO L93 Difference]: Finished difference Result 50788 states and 65597 transitions. [2024-11-22 02:22:59,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-22 02:22:59,382 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 12.043478260869565) internal successors, (277), 22 states have internal predecessors, (277), 9 states have call successors, (40), 5 states have call predecessors, (40), 7 states have return successors, (39), 10 states have call predecessors, (39), 9 states have call successors, (39) Word has length 161 [2024-11-22 02:22:59,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:22:59,512 INFO L225 Difference]: With dead ends: 50788 [2024-11-22 02:22:59,512 INFO L226 Difference]: Without dead ends: 31554 [2024-11-22 02:22:59,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3156 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1532, Invalid=8568, Unknown=0, NotChecked=0, Total=10100 [2024-11-22 02:22:59,554 INFO L432 NwaCegarLoop]: 545 mSDtfsCounter, 3674 mSDsluCounter, 4714 mSDsCounter, 0 mSdLazyCounter, 2771 mSolverCounterSat, 1114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3674 SdHoareTripleChecker+Valid, 5259 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1114 IncrementalHoareTripleChecker+Valid, 2771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-22 02:22:59,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3674 Valid, 5259 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1114 Valid, 2771 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-22 02:22:59,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31554 states. [2024-11-22 02:23:02,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31554 to 16633. [2024-11-22 02:23:02,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16633 states, 12419 states have (on average 1.2947902407601257) internal successors, (16080), 12529 states have internal predecessors, (16080), 2676 states have call successors, (2676), 1537 states have call predecessors, (2676), 1537 states have return successors, (2676), 2566 states have call predecessors, (2676), 2676 states have call successors, (2676) [2024-11-22 02:23:02,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16633 states to 16633 states and 21432 transitions. [2024-11-22 02:23:02,420 INFO L78 Accepts]: Start accepts. Automaton has 16633 states and 21432 transitions. Word has length 161 [2024-11-22 02:23:02,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:23:02,420 INFO L471 AbstractCegarLoop]: Abstraction has 16633 states and 21432 transitions. [2024-11-22 02:23:02,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.043478260869565) internal successors, (277), 22 states have internal predecessors, (277), 9 states have call successors, (40), 5 states have call predecessors, (40), 7 states have return successors, (39), 10 states have call predecessors, (39), 9 states have call successors, (39) [2024-11-22 02:23:02,420 INFO L276 IsEmpty]: Start isEmpty. Operand 16633 states and 21432 transitions. [2024-11-22 02:23:02,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-22 02:23:02,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:23:02,429 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:23:02,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-22 02:23:02,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-22 02:23:02,630 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:23:02,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:23:02,630 INFO L85 PathProgramCache]: Analyzing trace with hash -47883475, now seen corresponding path program 1 times [2024-11-22 02:23:02,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:23:02,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722244980] [2024-11-22 02:23:02,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:23:02,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:23:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:23:02,842 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:23:02,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:23:02,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722244980] [2024-11-22 02:23:02,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722244980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:23:02,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59238198] [2024-11-22 02:23:02,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:23:02,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:23:02,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:23:02,845 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:23:02,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 02:23:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:23:03,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-22 02:23:03,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:23:03,305 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 55 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 02:23:03,305 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:23:03,504 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 02:23:03,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59238198] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:23:03,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:23:03,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 9] total 18 [2024-11-22 02:23:03,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855616674] [2024-11-22 02:23:03,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:23:03,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 02:23:03,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:23:03,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 02:23:03,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:23:03,506 INFO L87 Difference]: Start difference. First operand 16633 states and 21432 transitions. Second operand has 18 states, 18 states have (on average 14.5) internal successors, (261), 18 states have internal predecessors, (261), 10 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (36), 10 states have call predecessors, (36), 10 states have call successors, (36) [2024-11-22 02:23:06,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:23:06,503 INFO L93 Difference]: Finished difference Result 33439 states and 43113 transitions. [2024-11-22 02:23:06,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-22 02:23:06,504 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 14.5) internal successors, (261), 18 states have internal predecessors, (261), 10 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (36), 10 states have call predecessors, (36), 10 states have call successors, (36) Word has length 163 [2024-11-22 02:23:06,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:23:06,575 INFO L225 Difference]: With dead ends: 33439 [2024-11-22 02:23:06,576 INFO L226 Difference]: Without dead ends: 17111 [2024-11-22 02:23:06,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=434, Invalid=972, Unknown=0, NotChecked=0, Total=1406 [2024-11-22 02:23:06,747 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 1776 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1776 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 02:23:06,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1776 Valid, 1897 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 02:23:06,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17111 states. [2024-11-22 02:23:09,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17111 to 16590. [2024-11-22 02:23:09,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16590 states, 12372 states have (on average 1.289282250242483) internal successors, (15951), 12482 states have internal predecessors, (15951), 2678 states have call successors, (2678), 1539 states have call predecessors, (2678), 1539 states have return successors, (2678), 2568 states have call predecessors, (2678), 2678 states have call successors, (2678) [2024-11-22 02:23:09,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16590 states to 16590 states and 21307 transitions. [2024-11-22 02:23:09,132 INFO L78 Accepts]: Start accepts. Automaton has 16590 states and 21307 transitions. Word has length 163 [2024-11-22 02:23:09,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:23:09,132 INFO L471 AbstractCegarLoop]: Abstraction has 16590 states and 21307 transitions. [2024-11-22 02:23:09,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.5) internal successors, (261), 18 states have internal predecessors, (261), 10 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (36), 10 states have call predecessors, (36), 10 states have call successors, (36) [2024-11-22 02:23:09,132 INFO L276 IsEmpty]: Start isEmpty. Operand 16590 states and 21307 transitions. [2024-11-22 02:23:09,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-22 02:23:09,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:23:09,138 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:23:09,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-22 02:23:09,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-22 02:23:09,338 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:23:09,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:23:09,339 INFO L85 PathProgramCache]: Analyzing trace with hash 622509435, now seen corresponding path program 1 times [2024-11-22 02:23:09,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:23:09,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477739496] [2024-11-22 02:23:09,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:23:09,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:23:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:23:09,475 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-22 02:23:09,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:23:09,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477739496] [2024-11-22 02:23:09,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477739496] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:23:09,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959387278] [2024-11-22 02:23:09,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:23:09,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:23:09,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:23:09,478 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:23:09,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 02:23:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:23:09,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 02:23:09,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:23:09,793 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 8 proven. 88 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-22 02:23:09,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:23:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-22 02:23:09,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959387278] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:23:09,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:23:09,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2024-11-22 02:23:09,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674097258] [2024-11-22 02:23:09,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:23:09,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 02:23:09,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:23:09,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 02:23:09,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-22 02:23:09,904 INFO L87 Difference]: Start difference. First operand 16590 states and 21307 transitions. Second operand has 10 states, 10 states have (on average 14.9) internal successors, (149), 9 states have internal predecessors, (149), 4 states have call successors, (30), 5 states have call predecessors, (30), 7 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2024-11-22 02:23:13,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:23:13,740 INFO L93 Difference]: Finished difference Result 40123 states and 50959 transitions. [2024-11-22 02:23:13,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 02:23:13,741 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.9) internal successors, (149), 9 states have internal predecessors, (149), 4 states have call successors, (30), 5 states have call predecessors, (30), 7 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) Word has length 165 [2024-11-22 02:23:13,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:23:13,814 INFO L225 Difference]: With dead ends: 40123 [2024-11-22 02:23:13,814 INFO L226 Difference]: Without dead ends: 23838 [2024-11-22 02:23:13,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 326 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-11-22 02:23:13,842 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 336 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:23:13,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 1738 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:23:13,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23838 states. [2024-11-22 02:23:16,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23838 to 19719. [2024-11-22 02:23:16,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19719 states, 14709 states have (on average 1.271330477938677) internal successors, (18700), 14850 states have internal predecessors, (18700), 3147 states have call successors, (3147), 1862 states have call predecessors, (3147), 1862 states have return successors, (3147), 3006 states have call predecessors, (3147), 3147 states have call successors, (3147) [2024-11-22 02:23:16,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19719 states to 19719 states and 24994 transitions. [2024-11-22 02:23:16,820 INFO L78 Accepts]: Start accepts. Automaton has 19719 states and 24994 transitions. Word has length 165 [2024-11-22 02:23:16,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:23:16,820 INFO L471 AbstractCegarLoop]: Abstraction has 19719 states and 24994 transitions. [2024-11-22 02:23:16,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.9) internal successors, (149), 9 states have internal predecessors, (149), 4 states have call successors, (30), 5 states have call predecessors, (30), 7 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2024-11-22 02:23:16,821 INFO L276 IsEmpty]: Start isEmpty. Operand 19719 states and 24994 transitions. [2024-11-22 02:23:16,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-22 02:23:16,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:23:16,826 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:23:16,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-22 02:23:17,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-22 02:23:17,026 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:23:17,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:23:17,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1873668849, now seen corresponding path program 1 times [2024-11-22 02:23:17,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:23:17,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556634069] [2024-11-22 02:23:17,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:23:17,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:23:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:23:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-22 02:23:17,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:23:17,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556634069] [2024-11-22 02:23:17,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556634069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:23:17,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:23:17,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 02:23:17,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330537878] [2024-11-22 02:23:17,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:23:17,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 02:23:17,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:23:17,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 02:23:17,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:23:17,159 INFO L87 Difference]: Start difference. First operand 19719 states and 24994 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14)