./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_Triplicated.1.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 d6dd7af8c681da9a32811252853803422c95f4df19741eb4bc23f2d0511fe647 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:37:07,633 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:37:07,689 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:37:07,697 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:37:07,697 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:37:07,726 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:37:07,726 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:37:07,727 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:37:07,727 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:37:07,728 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:37:07,728 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:37:07,728 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:37:07,729 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:37:07,729 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:37:07,729 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:37:07,730 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:37:07,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:37:07,731 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:37:07,731 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:37:07,731 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:37:07,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:37:07,735 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:37:07,735 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:37:07,735 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:37:07,736 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:37:07,736 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:37:07,736 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:37:07,736 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:37:07,737 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:37:07,737 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:37:07,737 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:37:07,737 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:37:07,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:37:07,738 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:37:07,738 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:37:07,741 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:37:07,742 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:37:07,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:37:07,742 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:37:07,742 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:37:07,742 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:37:07,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:37:07,743 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6dd7af8c681da9a32811252853803422c95f4df19741eb4bc23f2d0511fe647 [2024-11-18 14:37:07,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:37:07,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:37:07,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:37:07,997 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:37:07,999 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:37:08,000 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.BOUNDED-10.pals.c [2024-11-18 14:37:09,358 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:37:09,563 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:37:09,566 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.BOUNDED-10.pals.c [2024-11-18 14:37:09,579 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e954681d7/d221dabd2977449da647938532c0b9cf/FLAG35a391990 [2024-11-18 14:37:09,593 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e954681d7/d221dabd2977449da647938532c0b9cf [2024-11-18 14:37:09,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:37:09,596 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:37:09,599 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:37:09,599 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:37:09,607 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:37:09,607 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:37:09" (1/1) ... [2024-11-18 14:37:09,608 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45122222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:09, skipping insertion in model container [2024-11-18 14:37:09,608 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:37:09" (1/1) ... [2024-11-18 14:37:09,635 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:37:09,852 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_Triplicated.1.ufo.BOUNDED-10.pals.c[11956,11969] [2024-11-18 14:37:09,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:37:09,871 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:37:09,915 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_Triplicated.1.ufo.BOUNDED-10.pals.c[11956,11969] [2024-11-18 14:37:09,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:37:09,936 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:37:09,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:09 WrapperNode [2024-11-18 14:37:09,937 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:37:09,938 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:37:09,938 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:37:09,938 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:37:09,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:09" (1/1) ... [2024-11-18 14:37:09,954 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:09" (1/1) ... [2024-11-18 14:37:10,046 INFO L138 Inliner]: procedures = 27, calls = 46, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 427 [2024-11-18 14:37:10,046 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:37:10,047 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:37:10,047 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:37:10,047 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:37:10,057 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:09" (1/1) ... [2024-11-18 14:37:10,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:09" (1/1) ... [2024-11-18 14:37:10,063 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:09" (1/1) ... [2024-11-18 14:37:10,082 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]. [2024-11-18 14:37:10,082 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:09" (1/1) ... [2024-11-18 14:37:10,082 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:09" (1/1) ... [2024-11-18 14:37:10,089 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:09" (1/1) ... [2024-11-18 14:37:10,095 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:09" (1/1) ... [2024-11-18 14:37:10,098 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:09" (1/1) ... [2024-11-18 14:37:10,100 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:09" (1/1) ... [2024-11-18 14:37:10,103 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:37:10,105 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:37:10,106 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:37:10,106 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:37:10,110 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:09" (1/1) ... [2024-11-18 14:37:10,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:37:10,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:10,150 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) [2024-11-18 14:37:10,157 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 [2024-11-18 14:37:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:37:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2024-11-18 14:37:10,199 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2024-11-18 14:37:10,200 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-11-18 14:37:10,200 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-11-18 14:37:10,200 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2024-11-18 14:37:10,200 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2024-11-18 14:37:10,200 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2024-11-18 14:37:10,200 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2024-11-18 14:37:10,201 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2024-11-18 14:37:10,201 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2024-11-18 14:37:10,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:37:10,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:37:10,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:37:10,292 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:37:10,294 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:37:10,789 INFO L? ?]: Removed 106 outVars from TransFormulas that were not future-live. [2024-11-18 14:37:10,790 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:37:10,804 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:37:10,805 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-18 14:37:10,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:37:10 BoogieIcfgContainer [2024-11-18 14:37:10,805 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:37:10,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:37:10,807 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:37:10,812 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:37:10,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:37:09" (1/3) ... [2024-11-18 14:37:10,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7badf81a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:37:10, skipping insertion in model container [2024-11-18 14:37:10,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:09" (2/3) ... [2024-11-18 14:37:10,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7badf81a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:37:10, skipping insertion in model container [2024-11-18 14:37:10,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:37:10" (3/3) ... [2024-11-18 14:37:10,814 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.1.ufo.BOUNDED-10.pals.c [2024-11-18 14:37:10,828 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:37:10,829 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:37:10,892 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:37:10,898 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;@562cbefd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:37:10,898 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:37:10,902 INFO L276 IsEmpty]: Start isEmpty. Operand has 175 states, 136 states have (on average 1.6029411764705883) internal successors, (218), 140 states have internal predecessors, (218), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-18 14:37:10,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-18 14:37:10,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:10,915 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:10,916 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:10,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:10,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1581125196, now seen corresponding path program 1 times [2024-11-18 14:37:10,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:10,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818236333] [2024-11-18 14:37:10,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:10,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:11,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:11,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818236333] [2024-11-18 14:37:11,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818236333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:11,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:11,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:11,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123966429] [2024-11-18 14:37:11,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:11,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:11,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:11,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:11,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:11,269 INFO L87 Difference]: Start difference. First operand has 175 states, 136 states have (on average 1.6029411764705883) internal successors, (218), 140 states have internal predecessors, (218), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:37:11,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:11,429 INFO L93 Difference]: Finished difference Result 353 states and 600 transitions. [2024-11-18 14:37:11,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:11,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-18 14:37:11,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:11,440 INFO L225 Difference]: With dead ends: 353 [2024-11-18 14:37:11,441 INFO L226 Difference]: Without dead ends: 177 [2024-11-18 14:37:11,447 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 [2024-11-18 14:37:11,450 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 7 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:11,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 794 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:11,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-18 14:37:11,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2024-11-18 14:37:11,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 138 states have (on average 1.5434782608695652) internal successors, (213), 141 states have internal predecessors, (213), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-18 14:37:11,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 277 transitions. [2024-11-18 14:37:11,494 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 277 transitions. Word has length 15 [2024-11-18 14:37:11,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:11,494 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 277 transitions. [2024-11-18 14:37:11,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:37:11,498 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 277 transitions. [2024-11-18 14:37:11,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-18 14:37:11,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:11,500 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:11,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:37:11,500 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:11,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:11,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1712914003, now seen corresponding path program 1 times [2024-11-18 14:37:11,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:11,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642256920] [2024-11-18 14:37:11,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:11,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:11,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:11,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:11,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642256920] [2024-11-18 14:37:11,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642256920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:11,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:11,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:11,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314460052] [2024-11-18 14:37:11,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:11,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:11,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:11,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:11,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:11,613 INFO L87 Difference]: Start difference. First operand 177 states and 277 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:37:11,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:11,681 INFO L93 Difference]: Finished difference Result 367 states and 577 transitions. [2024-11-18 14:37:11,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:11,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-18 14:37:11,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:11,683 INFO L225 Difference]: With dead ends: 367 [2024-11-18 14:37:11,685 INFO L226 Difference]: Without dead ends: 193 [2024-11-18 14:37:11,687 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 [2024-11-18 14:37:11,688 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 25 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:11,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 798 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:11,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-18 14:37:11,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 190. [2024-11-18 14:37:11,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 149 states have (on average 1.523489932885906) internal successors, (227), 152 states have internal predecessors, (227), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-18 14:37:11,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 293 transitions. [2024-11-18 14:37:11,707 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 293 transitions. Word has length 16 [2024-11-18 14:37:11,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:11,707 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 293 transitions. [2024-11-18 14:37:11,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:37:11,707 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 293 transitions. [2024-11-18 14:37:11,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-18 14:37:11,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:11,711 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] [2024-11-18 14:37:11,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:37:11,711 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:11,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:11,711 INFO L85 PathProgramCache]: Analyzing trace with hash -218612603, now seen corresponding path program 1 times [2024-11-18 14:37:11,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:11,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828582431] [2024-11-18 14:37:11,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:11,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:11,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:11,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:11,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828582431] [2024-11-18 14:37:11,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828582431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:11,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:11,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:11,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208924945] [2024-11-18 14:37:11,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:11,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:11,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:11,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:11,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:11,796 INFO L87 Difference]: Start difference. First operand 190 states and 293 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2024-11-18 14:37:11,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:11,821 INFO L93 Difference]: Finished difference Result 399 states and 623 transitions. [2024-11-18 14:37:11,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:11,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 23 [2024-11-18 14:37:11,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:11,824 INFO L225 Difference]: With dead ends: 399 [2024-11-18 14:37:11,824 INFO L226 Difference]: Without dead ends: 219 [2024-11-18 14:37:11,825 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 [2024-11-18 14:37:11,827 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 22 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:11,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 536 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:11,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-18 14:37:11,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 192. [2024-11-18 14:37:11,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 151 states have (on average 1.5165562913907285) internal successors, (229), 154 states have internal predecessors, (229), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-18 14:37:11,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 295 transitions. [2024-11-18 14:37:11,844 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 295 transitions. Word has length 23 [2024-11-18 14:37:11,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:11,845 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 295 transitions. [2024-11-18 14:37:11,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2024-11-18 14:37:11,845 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 295 transitions. [2024-11-18 14:37:11,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-18 14:37:11,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:11,850 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] [2024-11-18 14:37:11,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 14:37:11,851 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:11,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:11,851 INFO L85 PathProgramCache]: Analyzing trace with hash 805469494, now seen corresponding path program 1 times [2024-11-18 14:37:11,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:11,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513499225] [2024-11-18 14:37:11,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:11,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:11,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:11,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513499225] [2024-11-18 14:37:11,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513499225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:11,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:11,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:11,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573505489] [2024-11-18 14:37:11,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:11,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:11,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:11,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:11,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:11,969 INFO L87 Difference]: Start difference. First operand 192 states and 295 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 14:37:12,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:12,002 INFO L93 Difference]: Finished difference Result 430 states and 678 transitions. [2024-11-18 14:37:12,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:12,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2024-11-18 14:37:12,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:12,005 INFO L225 Difference]: With dead ends: 430 [2024-11-18 14:37:12,005 INFO L226 Difference]: Without dead ends: 289 [2024-11-18 14:37:12,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:12,009 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 119 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:12,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 792 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:12,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-18 14:37:12,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 192. [2024-11-18 14:37:12,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 151 states have (on average 1.490066225165563) internal successors, (225), 154 states have internal predecessors, (225), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-18 14:37:12,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 291 transitions. [2024-11-18 14:37:12,033 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 291 transitions. Word has length 31 [2024-11-18 14:37:12,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:12,034 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 291 transitions. [2024-11-18 14:37:12,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 14:37:12,034 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 291 transitions. [2024-11-18 14:37:12,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-18 14:37:12,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:12,035 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] [2024-11-18 14:37:12,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 14:37:12,035 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:12,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:12,036 INFO L85 PathProgramCache]: Analyzing trace with hash -956786536, now seen corresponding path program 1 times [2024-11-18 14:37:12,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:12,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056133283] [2024-11-18 14:37:12,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:12,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:12,154 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:12,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:12,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056133283] [2024-11-18 14:37:12,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056133283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:12,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:12,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:37:12,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697954044] [2024-11-18 14:37:12,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:12,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:12,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:12,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:12,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:12,158 INFO L87 Difference]: Start difference. First operand 192 states and 291 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 14:37:12,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:12,192 INFO L93 Difference]: Finished difference Result 374 states and 571 transitions. [2024-11-18 14:37:12,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:12,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2024-11-18 14:37:12,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:12,197 INFO L225 Difference]: With dead ends: 374 [2024-11-18 14:37:12,198 INFO L226 Difference]: Without dead ends: 194 [2024-11-18 14:37:12,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:12,200 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 0 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:12,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1054 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:12,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-18 14:37:12,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2024-11-18 14:37:12,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 151 states have (on average 1.4834437086092715) internal successors, (224), 154 states have internal predecessors, (224), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-18 14:37:12,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 290 transitions. [2024-11-18 14:37:12,225 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 290 transitions. Word has length 32 [2024-11-18 14:37:12,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:12,225 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 290 transitions. [2024-11-18 14:37:12,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 14:37:12,225 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 290 transitions. [2024-11-18 14:37:12,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-18 14:37:12,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:12,226 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] [2024-11-18 14:37:12,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 14:37:12,226 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:12,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:12,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1412048612, now seen corresponding path program 1 times [2024-11-18 14:37:12,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:12,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767083125] [2024-11-18 14:37:12,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:12,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:12,301 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:12,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:12,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767083125] [2024-11-18 14:37:12,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767083125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:12,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455563137] [2024-11-18 14:37:12,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:12,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:12,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:12,306 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) [2024-11-18 14:37:12,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:37:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:12,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:37:12,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:12,447 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:12,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:12,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:12,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455563137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:12,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:12,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-18 14:37:12,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134936772] [2024-11-18 14:37:12,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:12,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:37:12,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:12,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:37:12,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:12,493 INFO L87 Difference]: Start difference. First operand 192 states and 290 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 14:37:12,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:12,547 INFO L93 Difference]: Finished difference Result 432 states and 667 transitions. [2024-11-18 14:37:12,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:12,548 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 35 [2024-11-18 14:37:12,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:12,550 INFO L225 Difference]: With dead ends: 432 [2024-11-18 14:37:12,550 INFO L226 Difference]: Without dead ends: 251 [2024-11-18 14:37:12,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:12,554 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 75 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:12,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 809 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:12,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-18 14:37:12,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 245. [2024-11-18 14:37:12,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 194 states have (on average 1.458762886597938) internal successors, (283), 197 states have internal predecessors, (283), 43 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 14:37:12,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 369 transitions. [2024-11-18 14:37:12,572 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 369 transitions. Word has length 35 [2024-11-18 14:37:12,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:12,573 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 369 transitions. [2024-11-18 14:37:12,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 14:37:12,573 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 369 transitions. [2024-11-18 14:37:12,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 14:37:12,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:12,576 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:12,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 14:37:12,779 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,SelfDestructingSolverStorable5 [2024-11-18 14:37:12,780 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:12,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:12,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1166895868, now seen corresponding path program 2 times [2024-11-18 14:37:12,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:12,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573067414] [2024-11-18 14:37:12,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:37:12,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:12,805 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-18 14:37:12,805 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:37:12,847 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-18 14:37:12,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:12,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573067414] [2024-11-18 14:37:12,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573067414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:12,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:12,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:12,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303046413] [2024-11-18 14:37:12,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:12,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:12,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:12,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:12,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:12,852 INFO L87 Difference]: Start difference. First operand 245 states and 369 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 14:37:12,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:12,901 INFO L93 Difference]: Finished difference Result 468 states and 722 transitions. [2024-11-18 14:37:12,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:12,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2024-11-18 14:37:12,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:12,903 INFO L225 Difference]: With dead ends: 468 [2024-11-18 14:37:12,907 INFO L226 Difference]: Without dead ends: 252 [2024-11-18 14:37:12,908 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 [2024-11-18 14:37:12,909 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 8 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:12,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 772 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:12,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-18 14:37:12,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2024-11-18 14:37:12,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 200 states have (on average 1.455) internal successors, (291), 203 states have internal predecessors, (291), 43 states have call successors, (43), 8 states have call predecessors, (43), 8 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 14:37:12,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 377 transitions. [2024-11-18 14:37:12,941 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 377 transitions. Word has length 57 [2024-11-18 14:37:12,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:12,942 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 377 transitions. [2024-11-18 14:37:12,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 14:37:12,942 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 377 transitions. [2024-11-18 14:37:12,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 14:37:12,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:12,943 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:12,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:37:12,944 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:12,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:12,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1021652299, now seen corresponding path program 1 times [2024-11-18 14:37:12,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:12,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876935481] [2024-11-18 14:37:12,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:12,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:13,020 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 14:37:13,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:13,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876935481] [2024-11-18 14:37:13,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876935481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:13,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:13,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:13,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328283801] [2024-11-18 14:37:13,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:13,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:13,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:13,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:13,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:13,022 INFO L87 Difference]: Start difference. First operand 252 states and 377 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 14:37:13,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:13,059 INFO L93 Difference]: Finished difference Result 514 states and 780 transitions. [2024-11-18 14:37:13,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:13,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2024-11-18 14:37:13,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:13,062 INFO L225 Difference]: With dead ends: 514 [2024-11-18 14:37:13,062 INFO L226 Difference]: Without dead ends: 291 [2024-11-18 14:37:13,063 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 [2024-11-18 14:37:13,063 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 24 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:13,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 790 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:13,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-18 14:37:13,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 288. [2024-11-18 14:37:13,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 232 states have (on average 1.4137931034482758) internal successors, (328), 235 states have internal predecessors, (328), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-18 14:37:13,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 420 transitions. [2024-11-18 14:37:13,074 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 420 transitions. Word has length 57 [2024-11-18 14:37:13,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:13,075 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 420 transitions. [2024-11-18 14:37:13,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 14:37:13,075 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 420 transitions. [2024-11-18 14:37:13,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 14:37:13,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:13,076 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:13,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:37:13,076 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:13,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:13,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1670828143, now seen corresponding path program 1 times [2024-11-18 14:37:13,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:13,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037758112] [2024-11-18 14:37:13,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:13,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:13,151 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:13,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:13,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037758112] [2024-11-18 14:37:13,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037758112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:13,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:13,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:37:13,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242629492] [2024-11-18 14:37:13,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:13,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:13,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:13,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:13,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:13,153 INFO L87 Difference]: Start difference. First operand 288 states and 420 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 14:37:13,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:13,179 INFO L93 Difference]: Finished difference Result 525 states and 779 transitions. [2024-11-18 14:37:13,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:13,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2024-11-18 14:37:13,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:13,182 INFO L225 Difference]: With dead ends: 525 [2024-11-18 14:37:13,182 INFO L226 Difference]: Without dead ends: 290 [2024-11-18 14:37:13,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:13,184 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 0 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:13,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1053 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:13,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-18 14:37:13,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 288. [2024-11-18 14:37:13,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 232 states have (on average 1.4008620689655173) internal successors, (325), 235 states have internal predecessors, (325), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-18 14:37:13,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 417 transitions. [2024-11-18 14:37:13,198 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 417 transitions. Word has length 75 [2024-11-18 14:37:13,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:13,198 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 417 transitions. [2024-11-18 14:37:13,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 14:37:13,200 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 417 transitions. [2024-11-18 14:37:13,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-18 14:37:13,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:13,201 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:13,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:37:13,201 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:13,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:13,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1243330431, now seen corresponding path program 1 times [2024-11-18 14:37:13,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:13,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830903369] [2024-11-18 14:37:13,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:13,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:13,288 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-18 14:37:13,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:13,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830903369] [2024-11-18 14:37:13,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830903369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:13,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:13,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:13,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385831638] [2024-11-18 14:37:13,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:13,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:13,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:13,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:13,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:13,290 INFO L87 Difference]: Start difference. First operand 288 states and 417 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 14:37:13,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:13,346 INFO L93 Difference]: Finished difference Result 562 states and 835 transitions. [2024-11-18 14:37:13,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:13,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 104 [2024-11-18 14:37:13,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:13,349 INFO L225 Difference]: With dead ends: 562 [2024-11-18 14:37:13,349 INFO L226 Difference]: Without dead ends: 332 [2024-11-18 14:37:13,350 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 [2024-11-18 14:37:13,351 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 25 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:13,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 790 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:13,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-18 14:37:13,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 329. [2024-11-18 14:37:13,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 269 states have (on average 1.3643122676579926) internal successors, (367), 272 states have internal predecessors, (367), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-18 14:37:13,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 465 transitions. [2024-11-18 14:37:13,371 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 465 transitions. Word has length 104 [2024-11-18 14:37:13,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:13,372 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 465 transitions. [2024-11-18 14:37:13,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 14:37:13,372 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 465 transitions. [2024-11-18 14:37:13,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-18 14:37:13,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:13,374 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:13,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:37:13,374 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:13,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:13,375 INFO L85 PathProgramCache]: Analyzing trace with hash -712190712, now seen corresponding path program 1 times [2024-11-18 14:37:13,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:13,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311747741] [2024-11-18 14:37:13,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:13,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:13,474 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-18 14:37:13,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:13,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311747741] [2024-11-18 14:37:13,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311747741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:13,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:13,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:13,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031092020] [2024-11-18 14:37:13,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:13,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:13,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:13,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:13,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:13,476 INFO L87 Difference]: Start difference. First operand 329 states and 465 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, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 14:37:13,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:13,520 INFO L93 Difference]: Finished difference Result 588 states and 855 transitions. [2024-11-18 14:37:13,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:13,521 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, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 105 [2024-11-18 14:37:13,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:13,523 INFO L225 Difference]: With dead ends: 588 [2024-11-18 14:37:13,523 INFO L226 Difference]: Without dead ends: 323 [2024-11-18 14:37:13,525 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 [2024-11-18 14:37:13,525 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 9 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:13,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 755 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:13,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-18 14:37:13,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2024-11-18 14:37:13,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 264 states have (on average 1.3446969696969697) internal successors, (355), 267 states have internal predecessors, (355), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 14:37:13,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 451 transitions. [2024-11-18 14:37:13,540 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 451 transitions. Word has length 105 [2024-11-18 14:37:13,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:13,541 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 451 transitions. [2024-11-18 14:37:13,541 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, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 14:37:13,541 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 451 transitions. [2024-11-18 14:37:13,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-18 14:37:13,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:13,542 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:13,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 14:37:13,542 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:13,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:13,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1828942627, now seen corresponding path program 1 times [2024-11-18 14:37:13,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:13,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339765757] [2024-11-18 14:37:13,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:13,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:13,645 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-18 14:37:13,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:13,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339765757] [2024-11-18 14:37:13,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339765757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:13,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:13,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:37:13,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940722564] [2024-11-18 14:37:13,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:13,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:13,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:13,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:13,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:13,647 INFO L87 Difference]: Start difference. First operand 323 states and 451 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 14:37:13,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:13,671 INFO L93 Difference]: Finished difference Result 563 states and 804 transitions. [2024-11-18 14:37:13,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:13,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 124 [2024-11-18 14:37:13,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:13,674 INFO L225 Difference]: With dead ends: 563 [2024-11-18 14:37:13,674 INFO L226 Difference]: Without dead ends: 325 [2024-11-18 14:37:13,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:13,676 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 0 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:13,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1037 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:13,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2024-11-18 14:37:13,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2024-11-18 14:37:13,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 264 states have (on average 1.3333333333333333) internal successors, (352), 267 states have internal predecessors, (352), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 14:37:13,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 448 transitions. [2024-11-18 14:37:13,687 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 448 transitions. Word has length 124 [2024-11-18 14:37:13,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:13,687 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 448 transitions. [2024-11-18 14:37:13,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 14:37:13,688 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 448 transitions. [2024-11-18 14:37:13,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-18 14:37:13,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:13,689 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:13,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 14:37:13,689 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:13,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:13,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1531403375, now seen corresponding path program 1 times [2024-11-18 14:37:13,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:13,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282683237] [2024-11-18 14:37:13,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:13,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:13,777 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2024-11-18 14:37:13,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:13,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282683237] [2024-11-18 14:37:13,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282683237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:13,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:13,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:13,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99851024] [2024-11-18 14:37:13,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:13,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:13,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:13,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:13,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:13,779 INFO L87 Difference]: Start difference. First operand 323 states and 448 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 14:37:13,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:13,830 INFO L93 Difference]: Finished difference Result 526 states and 764 transitions. [2024-11-18 14:37:13,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:13,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 157 [2024-11-18 14:37:13,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:13,832 INFO L225 Difference]: With dead ends: 526 [2024-11-18 14:37:13,832 INFO L226 Difference]: Without dead ends: 321 [2024-11-18 14:37:13,833 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 [2024-11-18 14:37:13,833 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 7 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:13,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 723 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:13,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-11-18 14:37:13,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2024-11-18 14:37:13,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 263 states have (on average 1.3307984790874525) internal successors, (350), 266 states have internal predecessors, (350), 47 states have call successors, (47), 10 states have call predecessors, (47), 10 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-18 14:37:13,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 444 transitions. [2024-11-18 14:37:13,849 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 444 transitions. Word has length 157 [2024-11-18 14:37:13,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:13,850 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 444 transitions. [2024-11-18 14:37:13,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 14:37:13,850 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 444 transitions. [2024-11-18 14:37:13,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-18 14:37:13,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:13,851 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:13,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 14:37:13,851 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:13,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:13,852 INFO L85 PathProgramCache]: Analyzing trace with hash -124413893, now seen corresponding path program 1 times [2024-11-18 14:37:13,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:13,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692932559] [2024-11-18 14:37:13,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:13,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2024-11-18 14:37:13,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:13,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692932559] [2024-11-18 14:37:13,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692932559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:13,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:13,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:13,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234679939] [2024-11-18 14:37:13,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:13,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:13,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:13,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:13,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:13,955 INFO L87 Difference]: Start difference. First operand 321 states and 444 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:14,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:14,001 INFO L93 Difference]: Finished difference Result 466 states and 660 transitions. [2024-11-18 14:37:14,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:14,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 172 [2024-11-18 14:37:14,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:14,004 INFO L225 Difference]: With dead ends: 466 [2024-11-18 14:37:14,004 INFO L226 Difference]: Without dead ends: 304 [2024-11-18 14:37:14,004 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 [2024-11-18 14:37:14,005 INFO L432 NwaCegarLoop]: 245 mSDtfsCounter, 35 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:14,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 699 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:14,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-18 14:37:14,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2024-11-18 14:37:14,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 249 states have (on average 1.321285140562249) internal successors, (329), 252 states have internal predecessors, (329), 44 states have call successors, (44), 10 states have call predecessors, (44), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-18 14:37:14,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 417 transitions. [2024-11-18 14:37:14,018 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 417 transitions. Word has length 172 [2024-11-18 14:37:14,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:14,019 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 417 transitions. [2024-11-18 14:37:14,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:14,019 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 417 transitions. [2024-11-18 14:37:14,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-18 14:37:14,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:14,021 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:14,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 14:37:14,021 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:14,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:14,023 INFO L85 PathProgramCache]: Analyzing trace with hash -225788768, now seen corresponding path program 1 times [2024-11-18 14:37:14,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:14,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236625829] [2024-11-18 14:37:14,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:14,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:14,132 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2024-11-18 14:37:14,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:14,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236625829] [2024-11-18 14:37:14,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236625829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:14,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:14,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:14,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449630874] [2024-11-18 14:37:14,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:14,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:14,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:14,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:14,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:14,134 INFO L87 Difference]: Start difference. First operand 304 states and 417 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:14,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:14,202 INFO L93 Difference]: Finished difference Result 449 states and 633 transitions. [2024-11-18 14:37:14,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:14,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 174 [2024-11-18 14:37:14,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:14,204 INFO L225 Difference]: With dead ends: 449 [2024-11-18 14:37:14,204 INFO L226 Difference]: Without dead ends: 285 [2024-11-18 14:37:14,206 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 [2024-11-18 14:37:14,206 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 30 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:14,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 703 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:14,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-18 14:37:14,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2024-11-18 14:37:14,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 233 states have (on average 1.3133047210300428) internal successors, (306), 236 states have internal predecessors, (306), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-18 14:37:14,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 388 transitions. [2024-11-18 14:37:14,217 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 388 transitions. Word has length 174 [2024-11-18 14:37:14,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:14,218 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 388 transitions. [2024-11-18 14:37:14,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:37:14,218 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 388 transitions. [2024-11-18 14:37:14,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 14:37:14,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:14,219 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:14,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 14:37:14,220 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:14,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:14,220 INFO L85 PathProgramCache]: Analyzing trace with hash -771772203, now seen corresponding path program 1 times [2024-11-18 14:37:14,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:14,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56947086] [2024-11-18 14:37:14,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:14,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:14,347 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2024-11-18 14:37:14,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:14,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56947086] [2024-11-18 14:37:14,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56947086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:14,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:14,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:37:14,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139962483] [2024-11-18 14:37:14,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:14,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:14,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:14,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:14,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:14,350 INFO L87 Difference]: Start difference. First operand 285 states and 388 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-18 14:37:14,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:14,372 INFO L93 Difference]: Finished difference Result 429 states and 603 transitions. [2024-11-18 14:37:14,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:14,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 175 [2024-11-18 14:37:14,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:14,374 INFO L225 Difference]: With dead ends: 429 [2024-11-18 14:37:14,375 INFO L226 Difference]: Without dead ends: 285 [2024-11-18 14:37:14,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:14,376 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 0 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:14,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1015 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:14,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-18 14:37:14,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2024-11-18 14:37:14,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 233 states have (on average 1.2875536480686696) internal successors, (300), 236 states have internal predecessors, (300), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-18 14:37:14,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 382 transitions. [2024-11-18 14:37:14,391 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 382 transitions. Word has length 175 [2024-11-18 14:37:14,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:14,392 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 382 transitions. [2024-11-18 14:37:14,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-18 14:37:14,392 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 382 transitions. [2024-11-18 14:37:14,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-18 14:37:14,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:14,393 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:14,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 14:37:14,393 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:14,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:14,394 INFO L85 PathProgramCache]: Analyzing trace with hash 171596258, now seen corresponding path program 1 times [2024-11-18 14:37:14,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:14,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752470438] [2024-11-18 14:37:14,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:14,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:14,502 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-11-18 14:37:14,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:14,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752470438] [2024-11-18 14:37:14,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752470438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:14,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799324382] [2024-11-18 14:37:14,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:14,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:14,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:14,505 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) [2024-11-18 14:37:14,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:37:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:14,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 14:37:14,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-11-18 14:37:14,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:14,883 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-11-18 14:37:14,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799324382] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:14,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 14:37:14,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2024-11-18 14:37:14,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95374845] [2024-11-18 14:37:14,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:14,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:14,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:14,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:14,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:14,885 INFO L87 Difference]: Start difference. First operand 285 states and 382 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 14:37:14,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:14,924 INFO L93 Difference]: Finished difference Result 450 states and 625 transitions. [2024-11-18 14:37:14,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:14,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 182 [2024-11-18 14:37:14,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:14,926 INFO L225 Difference]: With dead ends: 450 [2024-11-18 14:37:14,926 INFO L226 Difference]: Without dead ends: 264 [2024-11-18 14:37:14,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:14,927 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 30 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:14,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 481 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:14,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-18 14:37:14,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-11-18 14:37:14,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 215 states have (on average 1.2790697674418605) internal successors, (275), 218 states have internal predecessors, (275), 38 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-18 14:37:14,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 351 transitions. [2024-11-18 14:37:14,940 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 351 transitions. Word has length 182 [2024-11-18 14:37:14,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:14,940 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 351 transitions. [2024-11-18 14:37:14,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 14:37:14,940 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 351 transitions. [2024-11-18 14:37:14,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 14:37:14,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:14,942 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:14,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 14:37:15,142 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,SelfDestructingSolverStorable16 [2024-11-18 14:37:15,143 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:15,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:15,143 INFO L85 PathProgramCache]: Analyzing trace with hash 687203413, now seen corresponding path program 1 times [2024-11-18 14:37:15,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:15,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326713856] [2024-11-18 14:37:15,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:15,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:15,242 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2024-11-18 14:37:15,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:15,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326713856] [2024-11-18 14:37:15,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326713856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:15,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:15,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:15,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118028418] [2024-11-18 14:37:15,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:15,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:15,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:15,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:15,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:15,244 INFO L87 Difference]: Start difference. First operand 264 states and 351 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-18 14:37:15,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:15,270 INFO L93 Difference]: Finished difference Result 405 states and 564 transitions. [2024-11-18 14:37:15,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:15,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 206 [2024-11-18 14:37:15,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:15,272 INFO L225 Difference]: With dead ends: 405 [2024-11-18 14:37:15,273 INFO L226 Difference]: Without dead ends: 268 [2024-11-18 14:37:15,273 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 [2024-11-18 14:37:15,274 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 3 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:15,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 743 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:15,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-18 14:37:15,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2024-11-18 14:37:15,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 218 states have (on average 1.275229357798165) internal successors, (278), 221 states have internal predecessors, (278), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-18 14:37:15,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 354 transitions. [2024-11-18 14:37:15,288 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 354 transitions. Word has length 206 [2024-11-18 14:37:15,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:15,290 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 354 transitions. [2024-11-18 14:37:15,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-18 14:37:15,290 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 354 transitions. [2024-11-18 14:37:15,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-18 14:37:15,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:15,292 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:15,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 14:37:15,292 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:15,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:15,292 INFO L85 PathProgramCache]: Analyzing trace with hash 209531083, now seen corresponding path program 1 times [2024-11-18 14:37:15,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:15,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498200814] [2024-11-18 14:37:15,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:15,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2024-11-18 14:37:15,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:15,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498200814] [2024-11-18 14:37:15,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498200814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:15,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:15,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:15,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271794302] [2024-11-18 14:37:15,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:15,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:15,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:15,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:15,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:15,440 INFO L87 Difference]: Start difference. First operand 268 states and 354 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, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-18 14:37:15,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:15,474 INFO L93 Difference]: Finished difference Result 414 states and 572 transitions. [2024-11-18 14:37:15,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:15,475 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, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 213 [2024-11-18 14:37:15,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:15,477 INFO L225 Difference]: With dead ends: 414 [2024-11-18 14:37:15,477 INFO L226 Difference]: Without dead ends: 273 [2024-11-18 14:37:15,478 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 [2024-11-18 14:37:15,478 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 4 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:15,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 745 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:15,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-18 14:37:15,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2024-11-18 14:37:15,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 222 states have (on average 1.2702702702702702) internal successors, (282), 225 states have internal predecessors, (282), 38 states have call successors, (38), 12 states have call predecessors, (38), 12 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-18 14:37:15,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 358 transitions. [2024-11-18 14:37:15,492 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 358 transitions. Word has length 213 [2024-11-18 14:37:15,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:15,494 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 358 transitions. [2024-11-18 14:37:15,494 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, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-18 14:37:15,495 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 358 transitions. [2024-11-18 14:37:15,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-18 14:37:15,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:15,497 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:15,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 14:37:15,498 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:15,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:15,498 INFO L85 PathProgramCache]: Analyzing trace with hash 915774272, now seen corresponding path program 1 times [2024-11-18 14:37:15,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:15,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94341499] [2024-11-18 14:37:15,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:15,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2024-11-18 14:37:15,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:15,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94341499] [2024-11-18 14:37:15,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94341499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:15,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:15,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:15,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839860475] [2024-11-18 14:37:15,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:15,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:15,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:15,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:15,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:15,632 INFO L87 Difference]: Start difference. First operand 273 states and 358 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-18 14:37:15,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:15,665 INFO L93 Difference]: Finished difference Result 418 states and 572 transitions. [2024-11-18 14:37:15,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:15,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 221 [2024-11-18 14:37:15,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:15,668 INFO L225 Difference]: With dead ends: 418 [2024-11-18 14:37:15,668 INFO L226 Difference]: Without dead ends: 272 [2024-11-18 14:37:15,668 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 [2024-11-18 14:37:15,669 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 5 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:15,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 735 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:15,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-18 14:37:15,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2024-11-18 14:37:15,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 222 states have (on average 1.2567567567567568) internal successors, (279), 224 states have internal predecessors, (279), 37 states have call successors, (37), 12 states have call predecessors, (37), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-18 14:37:15,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 353 transitions. [2024-11-18 14:37:15,687 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 353 transitions. Word has length 221 [2024-11-18 14:37:15,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:15,687 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 353 transitions. [2024-11-18 14:37:15,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-18 14:37:15,688 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 353 transitions. [2024-11-18 14:37:15,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-18 14:37:15,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:15,691 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:15,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 14:37:15,691 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:15,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:15,692 INFO L85 PathProgramCache]: Analyzing trace with hash 568293619, now seen corresponding path program 1 times [2024-11-18 14:37:15,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:15,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003774315] [2024-11-18 14:37:15,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:15,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:15,820 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2024-11-18 14:37:15,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:15,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003774315] [2024-11-18 14:37:15,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003774315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:15,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:15,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:15,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467251819] [2024-11-18 14:37:15,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:15,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:15,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:15,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:15,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:15,822 INFO L87 Difference]: Start difference. First operand 272 states and 353 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-18 14:37:15,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:15,833 INFO L93 Difference]: Finished difference Result 416 states and 561 transitions. [2024-11-18 14:37:15,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:15,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 228 [2024-11-18 14:37:15,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:15,836 INFO L225 Difference]: With dead ends: 416 [2024-11-18 14:37:15,836 INFO L226 Difference]: Without dead ends: 271 [2024-11-18 14:37:15,837 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 [2024-11-18 14:37:15,837 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 0 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:15,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 490 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:15,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-18 14:37:15,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2024-11-18 14:37:15,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 222 states have (on average 1.2522522522522523) internal successors, (278), 223 states have internal predecessors, (278), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-18 14:37:15,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 350 transitions. [2024-11-18 14:37:15,849 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 350 transitions. Word has length 228 [2024-11-18 14:37:15,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:15,849 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 350 transitions. [2024-11-18 14:37:15,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-18 14:37:15,850 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 350 transitions. [2024-11-18 14:37:15,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-18 14:37:15,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:15,851 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:15,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 14:37:15,852 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:15,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:15,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1358671604, now seen corresponding path program 1 times [2024-11-18 14:37:15,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:15,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829477908] [2024-11-18 14:37:15,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:15,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2024-11-18 14:37:16,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:16,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829477908] [2024-11-18 14:37:16,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829477908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:16,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:16,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:16,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002229529] [2024-11-18 14:37:16,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:16,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:16,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:16,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:16,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:16,073 INFO L87 Difference]: Start difference. First operand 271 states and 350 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 14:37:16,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:16,149 INFO L93 Difference]: Finished difference Result 621 states and 830 transitions. [2024-11-18 14:37:16,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:16,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 231 [2024-11-18 14:37:16,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:16,152 INFO L225 Difference]: With dead ends: 621 [2024-11-18 14:37:16,152 INFO L226 Difference]: Without dead ends: 477 [2024-11-18 14:37:16,154 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 [2024-11-18 14:37:16,154 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 313 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:16,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 695 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:16,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2024-11-18 14:37:16,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 423. [2024-11-18 14:37:16,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 344 states have (on average 1.2994186046511629) internal successors, (447), 346 states have internal predecessors, (447), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-18 14:37:16,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 555 transitions. [2024-11-18 14:37:16,172 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 555 transitions. Word has length 231 [2024-11-18 14:37:16,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:16,173 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 555 transitions. [2024-11-18 14:37:16,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 14:37:16,173 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 555 transitions. [2024-11-18 14:37:16,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-18 14:37:16,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:16,175 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:16,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 14:37:16,175 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:16,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:16,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1534595272, now seen corresponding path program 1 times [2024-11-18 14:37:16,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:16,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926607207] [2024-11-18 14:37:16,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:16,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:16,283 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2024-11-18 14:37:16,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:16,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926607207] [2024-11-18 14:37:16,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926607207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:16,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:16,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:16,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121314748] [2024-11-18 14:37:16,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:16,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:16,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:16,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:16,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:16,285 INFO L87 Difference]: Start difference. First operand 423 states and 555 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:37:16,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:16,336 INFO L93 Difference]: Finished difference Result 893 states and 1225 transitions. [2024-11-18 14:37:16,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:16,336 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), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 258 [2024-11-18 14:37:16,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:16,340 INFO L225 Difference]: With dead ends: 893 [2024-11-18 14:37:16,340 INFO L226 Difference]: Without dead ends: 665 [2024-11-18 14:37:16,341 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 [2024-11-18 14:37:16,341 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 170 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:16,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 510 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:16,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2024-11-18 14:37:16,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 503. [2024-11-18 14:37:16,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 414 states have (on average 1.3091787439613527) internal successors, (542), 417 states have internal predecessors, (542), 59 states have call successors, (59), 29 states have call predecessors, (59), 29 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-18 14:37:16,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 660 transitions. [2024-11-18 14:37:16,364 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 660 transitions. Word has length 258 [2024-11-18 14:37:16,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:16,364 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 660 transitions. [2024-11-18 14:37:16,365 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), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:37:16,365 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 660 transitions. [2024-11-18 14:37:16,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-18 14:37:16,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:16,367 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:16,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 14:37:16,367 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:16,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:16,368 INFO L85 PathProgramCache]: Analyzing trace with hash -141182582, now seen corresponding path program 1 times [2024-11-18 14:37:16,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:16,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839908819] [2024-11-18 14:37:16,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:16,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2024-11-18 14:37:16,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:16,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839908819] [2024-11-18 14:37:16,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839908819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:16,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:16,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:16,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859809974] [2024-11-18 14:37:16,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:16,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:16,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:16,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:16,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:16,480 INFO L87 Difference]: Start difference. First operand 503 states and 660 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:37:16,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:16,518 INFO L93 Difference]: Finished difference Result 1067 states and 1456 transitions. [2024-11-18 14:37:16,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:16,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 259 [2024-11-18 14:37:16,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:16,522 INFO L225 Difference]: With dead ends: 1067 [2024-11-18 14:37:16,523 INFO L226 Difference]: Without dead ends: 788 [2024-11-18 14:37:16,524 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 [2024-11-18 14:37:16,524 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 172 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:16,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 527 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:16,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2024-11-18 14:37:16,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 613. [2024-11-18 14:37:16,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 512 states have (on average 1.3203125) internal successors, (676), 517 states have internal predecessors, (676), 65 states have call successors, (65), 35 states have call predecessors, (65), 35 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-18 14:37:16,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 806 transitions. [2024-11-18 14:37:16,551 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 806 transitions. Word has length 259 [2024-11-18 14:37:16,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:16,551 INFO L471 AbstractCegarLoop]: Abstraction has 613 states and 806 transitions. [2024-11-18 14:37:16,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:37:16,552 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 806 transitions. [2024-11-18 14:37:16,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-18 14:37:16,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:16,554 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:16,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-18 14:37:16,554 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:16,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:16,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1355646765, now seen corresponding path program 1 times [2024-11-18 14:37:16,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:16,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600076743] [2024-11-18 14:37:16,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:16,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:16,639 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2024-11-18 14:37:16,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:16,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600076743] [2024-11-18 14:37:16,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600076743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:16,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:16,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:16,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956388946] [2024-11-18 14:37:16,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:16,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:16,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:16,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:16,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:16,642 INFO L87 Difference]: Start difference. First operand 613 states and 806 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 14:37:16,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:16,691 INFO L93 Difference]: Finished difference Result 1283 states and 1750 transitions. [2024-11-18 14:37:16,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:16,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 260 [2024-11-18 14:37:16,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:16,696 INFO L225 Difference]: With dead ends: 1283 [2024-11-18 14:37:16,697 INFO L226 Difference]: Without dead ends: 926 [2024-11-18 14:37:16,698 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 [2024-11-18 14:37:16,698 INFO L432 NwaCegarLoop]: 304 mSDtfsCounter, 173 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:16,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 543 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:16,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2024-11-18 14:37:16,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 723. [2024-11-18 14:37:16,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 614 states have (on average 1.3355048859934853) internal successors, (820), 623 states have internal predecessors, (820), 69 states have call successors, (69), 39 states have call predecessors, (69), 39 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2024-11-18 14:37:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 958 transitions. [2024-11-18 14:37:16,749 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 958 transitions. Word has length 260 [2024-11-18 14:37:16,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:16,749 INFO L471 AbstractCegarLoop]: Abstraction has 723 states and 958 transitions. [2024-11-18 14:37:16,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 14:37:16,750 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 958 transitions. [2024-11-18 14:37:16,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-18 14:37:16,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:16,752 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:16,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-18 14:37:16,752 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:16,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:16,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1080887151, now seen corresponding path program 1 times [2024-11-18 14:37:16,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:16,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092908793] [2024-11-18 14:37:16,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:16,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:16,939 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2024-11-18 14:37:16,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:16,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092908793] [2024-11-18 14:37:16,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092908793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:16,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887891001] [2024-11-18 14:37:16,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:16,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:16,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:16,941 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) [2024-11-18 14:37:16,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 14:37:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:17,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:37:17,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:17,164 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2024-11-18 14:37:17,164 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:17,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887891001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:17,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:17,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-18 14:37:17,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201744744] [2024-11-18 14:37:17,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:17,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:17,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:17,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:17,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:37:17,165 INFO L87 Difference]: Start difference. First operand 723 states and 958 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 14:37:17,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:17,272 INFO L93 Difference]: Finished difference Result 1194 states and 1622 transitions. [2024-11-18 14:37:17,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:17,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 260 [2024-11-18 14:37:17,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:17,276 INFO L225 Difference]: With dead ends: 1194 [2024-11-18 14:37:17,276 INFO L226 Difference]: Without dead ends: 723 [2024-11-18 14:37:17,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:37:17,278 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 31 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:17,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 670 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:17,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2024-11-18 14:37:17,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2024-11-18 14:37:17,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 614 states have (on average 1.3257328990228012) internal successors, (814), 623 states have internal predecessors, (814), 69 states have call successors, (69), 39 states have call predecessors, (69), 39 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2024-11-18 14:37:17,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 952 transitions. [2024-11-18 14:37:17,317 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 952 transitions. Word has length 260 [2024-11-18 14:37:17,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:17,318 INFO L471 AbstractCegarLoop]: Abstraction has 723 states and 952 transitions. [2024-11-18 14:37:17,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 14:37:17,318 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 952 transitions. [2024-11-18 14:37:17,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-18 14:37:17,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:17,321 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:17,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 14:37:17,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:17,522 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:17,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:17,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1702413312, now seen corresponding path program 1 times [2024-11-18 14:37:17,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:17,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173003929] [2024-11-18 14:37:17,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:17,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:17,725 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2024-11-18 14:37:17,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:17,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173003929] [2024-11-18 14:37:17,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173003929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:17,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953285426] [2024-11-18 14:37:17,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:17,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:17,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:17,730 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) [2024-11-18 14:37:17,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 14:37:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:17,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:37:17,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2024-11-18 14:37:17,942 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:17,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953285426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:17,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:17,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-18 14:37:17,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026847913] [2024-11-18 14:37:17,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:17,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:17,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:17,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:17,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:37:17,944 INFO L87 Difference]: Start difference. First operand 723 states and 952 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 14:37:18,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:18,016 INFO L93 Difference]: Finished difference Result 1194 states and 1608 transitions. [2024-11-18 14:37:18,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:18,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 261 [2024-11-18 14:37:18,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:18,020 INFO L225 Difference]: With dead ends: 1194 [2024-11-18 14:37:18,021 INFO L226 Difference]: Without dead ends: 735 [2024-11-18 14:37:18,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:37:18,022 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 7 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:18,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 678 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:18,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2024-11-18 14:37:18,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2024-11-18 14:37:18,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 624 states have (on average 1.3269230769230769) internal successors, (828), 633 states have internal predecessors, (828), 69 states have call successors, (69), 41 states have call predecessors, (69), 41 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2024-11-18 14:37:18,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 966 transitions. [2024-11-18 14:37:18,076 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 966 transitions. Word has length 261 [2024-11-18 14:37:18,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:18,077 INFO L471 AbstractCegarLoop]: Abstraction has 735 states and 966 transitions. [2024-11-18 14:37:18,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 14:37:18,077 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 966 transitions. [2024-11-18 14:37:18,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-18 14:37:18,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:18,079 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:18,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 14:37:18,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-18 14:37:18,280 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:18,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:18,280 INFO L85 PathProgramCache]: Analyzing trace with hash -955415893, now seen corresponding path program 1 times [2024-11-18 14:37:18,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:18,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528508344] [2024-11-18 14:37:18,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:18,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:18,474 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2024-11-18 14:37:18,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:18,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528508344] [2024-11-18 14:37:18,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528508344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:18,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:18,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:18,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140703158] [2024-11-18 14:37:18,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:18,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:18,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:18,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:18,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:18,476 INFO L87 Difference]: Start difference. First operand 735 states and 966 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 14:37:18,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:18,507 INFO L93 Difference]: Finished difference Result 1208 states and 1622 transitions. [2024-11-18 14:37:18,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:18,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 262 [2024-11-18 14:37:18,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:18,511 INFO L225 Difference]: With dead ends: 1208 [2024-11-18 14:37:18,511 INFO L226 Difference]: Without dead ends: 715 [2024-11-18 14:37:18,513 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 [2024-11-18 14:37:18,513 INFO L432 NwaCegarLoop]: 247 mSDtfsCounter, 0 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:18,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 487 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:18,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2024-11-18 14:37:18,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2024-11-18 14:37:18,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 605 states have (on average 1.3107438016528925) internal successors, (793), 613 states have internal predecessors, (793), 69 states have call successors, (69), 41 states have call predecessors, (69), 40 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-18 14:37:18,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 930 transitions. [2024-11-18 14:37:18,547 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 930 transitions. Word has length 262 [2024-11-18 14:37:18,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:18,547 INFO L471 AbstractCegarLoop]: Abstraction has 715 states and 930 transitions. [2024-11-18 14:37:18,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 14:37:18,547 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 930 transitions. [2024-11-18 14:37:18,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-18 14:37:18,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:18,550 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:18,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-18 14:37:18,550 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:18,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:18,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1386884296, now seen corresponding path program 1 times [2024-11-18 14:37:18,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:18,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554566594] [2024-11-18 14:37:18,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:18,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:18,888 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2024-11-18 14:37:18,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:18,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554566594] [2024-11-18 14:37:18,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554566594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:18,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:18,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:37:18,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911321769] [2024-11-18 14:37:18,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:18,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:37:18,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:18,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:37:18,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:18,890 INFO L87 Difference]: Start difference. First operand 715 states and 930 transitions. Second operand has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-18 14:37:18,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:18,963 INFO L93 Difference]: Finished difference Result 1036 states and 1422 transitions. [2024-11-18 14:37:18,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:37:18,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 263 [2024-11-18 14:37:18,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:18,968 INFO L225 Difference]: With dead ends: 1036 [2024-11-18 14:37:18,969 INFO L226 Difference]: Without dead ends: 1034 [2024-11-18 14:37:18,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:37:18,970 INFO L432 NwaCegarLoop]: 372 mSDtfsCounter, 120 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:18,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1732 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:18,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2024-11-18 14:37:18,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 721. [2024-11-18 14:37:18,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 609 states have (on average 1.3087027914614122) internal successors, (797), 618 states have internal predecessors, (797), 70 states have call successors, (70), 42 states have call predecessors, (70), 41 states have return successors, (69), 67 states have call predecessors, (69), 69 states have call successors, (69) [2024-11-18 14:37:18,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 936 transitions. [2024-11-18 14:37:18,999 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 936 transitions. Word has length 263 [2024-11-18 14:37:18,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:18,999 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 936 transitions. [2024-11-18 14:37:18,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-18 14:37:18,999 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 936 transitions. [2024-11-18 14:37:19,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-18 14:37:19,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:19,002 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:19,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-18 14:37:19,002 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:19,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:19,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1763607020, now seen corresponding path program 1 times [2024-11-18 14:37:19,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:19,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654140527] [2024-11-18 14:37:19,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:19,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 142 proven. 27 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2024-11-18 14:37:19,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:19,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654140527] [2024-11-18 14:37:19,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654140527] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:19,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240943036] [2024-11-18 14:37:19,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:19,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:19,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:19,293 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) [2024-11-18 14:37:19,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 14:37:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:19,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 967 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 14:37:19,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:19,645 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 251 proven. 33 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-18 14:37:19,645 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:19,955 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 146 proven. 23 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2024-11-18 14:37:19,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240943036] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:19,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:19,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2024-11-18 14:37:19,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400068471] [2024-11-18 14:37:19,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:19,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 14:37:19,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:19,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 14:37:19,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:37:19,957 INFO L87 Difference]: Start difference. First operand 721 states and 936 transitions. Second operand has 18 states, 18 states have (on average 8.0) internal successors, (144), 14 states have internal predecessors, (144), 5 states have call successors, (25), 4 states have call predecessors, (25), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2024-11-18 14:37:20,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:20,418 INFO L93 Difference]: Finished difference Result 1726 states and 2317 transitions. [2024-11-18 14:37:20,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 14:37:20,419 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.0) internal successors, (144), 14 states have internal predecessors, (144), 5 states have call successors, (25), 4 states have call predecessors, (25), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) Word has length 271 [2024-11-18 14:37:20,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:20,425 INFO L225 Difference]: With dead ends: 1726 [2024-11-18 14:37:20,425 INFO L226 Difference]: Without dead ends: 1267 [2024-11-18 14:37:20,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 533 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2024-11-18 14:37:20,427 INFO L432 NwaCegarLoop]: 340 mSDtfsCounter, 267 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 3407 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:20,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 3407 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:37:20,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2024-11-18 14:37:20,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 989. [2024-11-18 14:37:20,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 837 states have (on average 1.2915173237753883) internal successors, (1081), 847 states have internal predecessors, (1081), 94 states have call successors, (94), 55 states have call predecessors, (94), 57 states have return successors, (98), 93 states have call predecessors, (98), 93 states have call successors, (98) [2024-11-18 14:37:20,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1273 transitions. [2024-11-18 14:37:20,490 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1273 transitions. Word has length 271 [2024-11-18 14:37:20,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:20,491 INFO L471 AbstractCegarLoop]: Abstraction has 989 states and 1273 transitions. [2024-11-18 14:37:20,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.0) internal successors, (144), 14 states have internal predecessors, (144), 5 states have call successors, (25), 4 states have call predecessors, (25), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2024-11-18 14:37:20,491 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1273 transitions. [2024-11-18 14:37:20,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-18 14:37:20,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:20,495 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:20,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 14:37:20,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:20,696 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:20,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:20,696 INFO L85 PathProgramCache]: Analyzing trace with hash -801993003, now seen corresponding path program 1 times [2024-11-18 14:37:20,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:20,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385384612] [2024-11-18 14:37:20,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:20,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:20,835 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2024-11-18 14:37:20,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:20,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385384612] [2024-11-18 14:37:20,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385384612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:20,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830574146] [2024-11-18 14:37:20,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:20,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:20,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:20,841 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) [2024-11-18 14:37:20,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 14:37:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:21,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 14:37:21,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:21,048 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2024-11-18 14:37:21,048 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:21,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830574146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:21,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:21,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-18 14:37:21,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050098768] [2024-11-18 14:37:21,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:21,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:21,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:21,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:21,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:21,051 INFO L87 Difference]: Start difference. First operand 989 states and 1273 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:37:21,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:21,137 INFO L93 Difference]: Finished difference Result 1841 states and 2410 transitions. [2024-11-18 14:37:21,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:21,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 271 [2024-11-18 14:37:21,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:21,142 INFO L225 Difference]: With dead ends: 1841 [2024-11-18 14:37:21,143 INFO L226 Difference]: Without dead ends: 973 [2024-11-18 14:37:21,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:21,145 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 4 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:21,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 675 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:21,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2024-11-18 14:37:21,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 973. [2024-11-18 14:37:21,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 826 states have (on average 1.2796610169491525) internal successors, (1057), 836 states have internal predecessors, (1057), 90 states have call successors, (90), 55 states have call predecessors, (90), 56 states have return successors, (93), 88 states have call predecessors, (93), 89 states have call successors, (93) [2024-11-18 14:37:21,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1240 transitions. [2024-11-18 14:37:21,184 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1240 transitions. Word has length 271 [2024-11-18 14:37:21,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:21,184 INFO L471 AbstractCegarLoop]: Abstraction has 973 states and 1240 transitions. [2024-11-18 14:37:21,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:37:21,184 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1240 transitions. [2024-11-18 14:37:21,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-18 14:37:21,186 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:21,186 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:21,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 14:37:21,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:21,387 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:21,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:21,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1829250860, now seen corresponding path program 1 times [2024-11-18 14:37:21,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:21,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910706228] [2024-11-18 14:37:21,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:21,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:21,512 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 121 proven. 19 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2024-11-18 14:37:21,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:21,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910706228] [2024-11-18 14:37:21,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910706228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:21,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420484921] [2024-11-18 14:37:21,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:21,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:21,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:21,515 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) [2024-11-18 14:37:21,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 14:37:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:21,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 967 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 14:37:21,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2024-11-18 14:37:21,713 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:21,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420484921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:21,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:21,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-18 14:37:21,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568576829] [2024-11-18 14:37:21,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:21,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:21,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:21,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:21,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:21,716 INFO L87 Difference]: Start difference. First operand 973 states and 1240 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:37:21,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:21,776 INFO L93 Difference]: Finished difference Result 1689 states and 2194 transitions. [2024-11-18 14:37:21,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:21,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 274 [2024-11-18 14:37:21,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:21,780 INFO L225 Difference]: With dead ends: 1689 [2024-11-18 14:37:21,780 INFO L226 Difference]: Without dead ends: 828 [2024-11-18 14:37:21,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:21,784 INFO L432 NwaCegarLoop]: 243 mSDtfsCounter, 4 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:21,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 703 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:21,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2024-11-18 14:37:21,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 828. [2024-11-18 14:37:21,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 699 states have (on average 1.2789699570815452) internal successors, (894), 709 states have internal predecessors, (894), 81 states have call successors, (81), 48 states have call predecessors, (81), 47 states have return successors, (80), 77 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-18 14:37:21,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1055 transitions. [2024-11-18 14:37:21,818 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1055 transitions. Word has length 274 [2024-11-18 14:37:21,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:21,819 INFO L471 AbstractCegarLoop]: Abstraction has 828 states and 1055 transitions. [2024-11-18 14:37:21,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:37:21,819 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1055 transitions. [2024-11-18 14:37:21,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-11-18 14:37:21,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:21,821 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:21,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 14:37:22,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:22,021 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:22,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:22,022 INFO L85 PathProgramCache]: Analyzing trace with hash 211214063, now seen corresponding path program 1 times [2024-11-18 14:37:22,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:22,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210887269] [2024-11-18 14:37:22,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:22,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:22,346 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-18 14:37:22,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:22,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210887269] [2024-11-18 14:37:22,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210887269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:22,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150932414] [2024-11-18 14:37:22,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:22,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:22,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:22,349 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) [2024-11-18 14:37:22,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 14:37:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:22,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-18 14:37:22,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:22,678 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2024-11-18 14:37:22,678 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:22,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150932414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:22,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:22,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-18 14:37:22,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979940277] [2024-11-18 14:37:22,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:22,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:37:22,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:22,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:37:22,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2024-11-18 14:37:22,681 INFO L87 Difference]: Start difference. First operand 828 states and 1055 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 7 states have internal predecessors, (105), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 14:37:22,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:22,911 INFO L93 Difference]: Finished difference Result 1578 states and 2038 transitions. [2024-11-18 14:37:22,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:37:22,912 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 7 states have internal predecessors, (105), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 286 [2024-11-18 14:37:22,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:22,917 INFO L225 Difference]: With dead ends: 1578 [2024-11-18 14:37:22,917 INFO L226 Difference]: Without dead ends: 1112 [2024-11-18 14:37:22,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:37:22,919 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 127 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:22,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 1701 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:37:22,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2024-11-18 14:37:22,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 990. [2024-11-18 14:37:22,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 833 states have (on average 1.2725090036014406) internal successors, (1060), 844 states have internal predecessors, (1060), 99 states have call successors, (99), 58 states have call predecessors, (99), 57 states have return successors, (98), 94 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-18 14:37:22,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1257 transitions. [2024-11-18 14:37:22,960 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1257 transitions. Word has length 286 [2024-11-18 14:37:22,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:22,961 INFO L471 AbstractCegarLoop]: Abstraction has 990 states and 1257 transitions. [2024-11-18 14:37:22,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 7 states have internal predecessors, (105), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 14:37:22,961 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1257 transitions. [2024-11-18 14:37:22,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-11-18 14:37:22,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:22,963 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:22,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 14:37:23,163 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,SelfDestructingSolverStorable32 [2024-11-18 14:37:23,163 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:23,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:23,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1543527212, now seen corresponding path program 1 times [2024-11-18 14:37:23,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:23,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033421087] [2024-11-18 14:37:23,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:23,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:23,366 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2024-11-18 14:37:23,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:23,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033421087] [2024-11-18 14:37:23,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033421087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:23,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:23,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:37:23,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769302826] [2024-11-18 14:37:23,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:23,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:37:23,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:23,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:37:23,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:23,368 INFO L87 Difference]: Start difference. First operand 990 states and 1257 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 5 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-18 14:37:23,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:23,439 INFO L93 Difference]: Finished difference Result 1714 states and 2250 transitions. [2024-11-18 14:37:23,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:37:23,440 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 5 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 292 [2024-11-18 14:37:23,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:23,444 INFO L225 Difference]: With dead ends: 1714 [2024-11-18 14:37:23,444 INFO L226 Difference]: Without dead ends: 1071 [2024-11-18 14:37:23,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:23,446 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 37 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:23,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 981 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:23,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2024-11-18 14:37:23,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1045. [2024-11-18 14:37:23,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 876 states have (on average 1.2831050228310503) internal successors, (1124), 887 states have internal predecessors, (1124), 111 states have call successors, (111), 58 states have call predecessors, (111), 57 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-18 14:37:23,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1345 transitions. [2024-11-18 14:37:23,488 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1345 transitions. Word has length 292 [2024-11-18 14:37:23,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:23,488 INFO L471 AbstractCegarLoop]: Abstraction has 1045 states and 1345 transitions. [2024-11-18 14:37:23,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 5 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-18 14:37:23,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1345 transitions. [2024-11-18 14:37:23,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-11-18 14:37:23,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:23,490 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:23,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-18 14:37:23,490 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:23,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:23,491 INFO L85 PathProgramCache]: Analyzing trace with hash -286887768, now seen corresponding path program 1 times [2024-11-18 14:37:23,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:23,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811320370] [2024-11-18 14:37:23,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:23,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 14:37:23,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:23,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811320370] [2024-11-18 14:37:23,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811320370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:23,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721466310] [2024-11-18 14:37:23,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:23,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:23,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:23,927 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) [2024-11-18 14:37:23,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 14:37:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:24,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-18 14:37:24,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2024-11-18 14:37:24,241 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:24,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721466310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:24,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:24,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 16 [2024-11-18 14:37:24,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384634880] [2024-11-18 14:37:24,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:24,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 14:37:24,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:24,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 14:37:24,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-18 14:37:24,242 INFO L87 Difference]: Start difference. First operand 1045 states and 1345 transitions. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 9 states have internal predecessors, (113), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-18 14:37:24,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:24,772 INFO L93 Difference]: Finished difference Result 2345 states and 3036 transitions. [2024-11-18 14:37:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 14:37:24,773 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 9 states have internal predecessors, (113), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 292 [2024-11-18 14:37:24,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:24,780 INFO L225 Difference]: With dead ends: 2345 [2024-11-18 14:37:24,781 INFO L226 Difference]: Without dead ends: 1648 [2024-11-18 14:37:24,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2024-11-18 14:37:24,784 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 595 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 2169 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:24,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 2169 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:37:24,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2024-11-18 14:37:24,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1221. [2024-11-18 14:37:24,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 1020 states have (on average 1.2754901960784313) internal successors, (1301), 1033 states have internal predecessors, (1301), 133 states have call successors, (133), 68 states have call predecessors, (133), 67 states have return successors, (132), 126 states have call predecessors, (132), 132 states have call successors, (132) [2024-11-18 14:37:24,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1566 transitions. [2024-11-18 14:37:24,865 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1566 transitions. Word has length 292 [2024-11-18 14:37:24,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:24,865 INFO L471 AbstractCegarLoop]: Abstraction has 1221 states and 1566 transitions. [2024-11-18 14:37:24,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 9 states have internal predecessors, (113), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-18 14:37:24,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1566 transitions. [2024-11-18 14:37:24,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-11-18 14:37:24,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:24,868 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:24,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 14:37:25,072 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,SelfDestructingSolverStorable34 [2024-11-18 14:37:25,073 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:25,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:25,074 INFO L85 PathProgramCache]: Analyzing trace with hash 600167080, now seen corresponding path program 1 times [2024-11-18 14:37:25,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:25,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929042361] [2024-11-18 14:37:25,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:25,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:25,336 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 14:37:25,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:25,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929042361] [2024-11-18 14:37:25,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929042361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:25,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930937402] [2024-11-18 14:37:25,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:25,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:25,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:25,339 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) [2024-11-18 14:37:25,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 14:37:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:25,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-18 14:37:25,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:25,582 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2024-11-18 14:37:25,582 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:25,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930937402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:25,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:25,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2024-11-18 14:37:25,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906808033] [2024-11-18 14:37:25,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:25,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:37:25,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:25,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:37:25,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:37:25,584 INFO L87 Difference]: Start difference. First operand 1221 states and 1566 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 14:37:25,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:25,800 INFO L93 Difference]: Finished difference Result 2194 states and 2841 transitions. [2024-11-18 14:37:25,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:37:25,801 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 292 [2024-11-18 14:37:25,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:25,806 INFO L225 Difference]: With dead ends: 2194 [2024-11-18 14:37:25,806 INFO L226 Difference]: Without dead ends: 1318 [2024-11-18 14:37:25,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:37:25,809 INFO L432 NwaCegarLoop]: 317 mSDtfsCounter, 120 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:25,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1853 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:37:25,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2024-11-18 14:37:25,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1199. [2024-11-18 14:37:25,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1004 states have (on average 1.2709163346613546) internal successors, (1276), 1017 states have internal predecessors, (1276), 127 states have call successors, (127), 68 states have call predecessors, (127), 67 states have return successors, (126), 120 states have call predecessors, (126), 126 states have call successors, (126) [2024-11-18 14:37:25,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1529 transitions. [2024-11-18 14:37:25,854 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1529 transitions. Word has length 292 [2024-11-18 14:37:25,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:25,855 INFO L471 AbstractCegarLoop]: Abstraction has 1199 states and 1529 transitions. [2024-11-18 14:37:25,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 14:37:25,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1529 transitions. [2024-11-18 14:37:25,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-18 14:37:25,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:25,856 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:25,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 14:37:26,057 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,SelfDestructingSolverStorable35 [2024-11-18 14:37:26,058 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:26,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:26,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1957012249, now seen corresponding path program 1 times [2024-11-18 14:37:26,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:26,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038989880] [2024-11-18 14:37:26,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:26,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 704 trivial. 0 not checked. [2024-11-18 14:37:26,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:26,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038989880] [2024-11-18 14:37:26,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038989880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:26,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:26,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:26,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437427903] [2024-11-18 14:37:26,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:26,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:26,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:26,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:26,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:26,184 INFO L87 Difference]: Start difference. First operand 1199 states and 1529 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-18 14:37:26,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:26,373 INFO L93 Difference]: Finished difference Result 1977 states and 2543 transitions. [2024-11-18 14:37:26,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:26,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 300 [2024-11-18 14:37:26,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:26,379 INFO L225 Difference]: With dead ends: 1977 [2024-11-18 14:37:26,379 INFO L226 Difference]: Without dead ends: 1135 [2024-11-18 14:37:26,381 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 [2024-11-18 14:37:26,382 INFO L432 NwaCegarLoop]: 359 mSDtfsCounter, 436 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:26,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 859 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:26,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2024-11-18 14:37:26,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 898. [2024-11-18 14:37:26,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 767 states have (on average 1.2464146023468057) internal successors, (956), 770 states have internal predecessors, (956), 85 states have call successors, (85), 45 states have call predecessors, (85), 45 states have return successors, (85), 82 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-18 14:37:26,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1126 transitions. [2024-11-18 14:37:26,418 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1126 transitions. Word has length 300 [2024-11-18 14:37:26,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:26,418 INFO L471 AbstractCegarLoop]: Abstraction has 898 states and 1126 transitions. [2024-11-18 14:37:26,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-18 14:37:26,419 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1126 transitions. [2024-11-18 14:37:26,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-11-18 14:37:26,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:26,421 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2024-11-18 14:37:26,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-18 14:37:26,421 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:26,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:26,421 INFO L85 PathProgramCache]: Analyzing trace with hash 336941807, now seen corresponding path program 1 times [2024-11-18 14:37:26,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:26,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476554426] [2024-11-18 14:37:26,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:26,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:27,253 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2024-11-18 14:37:27,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:27,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476554426] [2024-11-18 14:37:27,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476554426] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:27,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576997118] [2024-11-18 14:37:27,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:27,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:27,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:27,256 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:27,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 14:37:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:27,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-18 14:37:27,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:28,191 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 195 proven. 102 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-11-18 14:37:28,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:28,777 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 14 proven. 28 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2024-11-18 14:37:28,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576997118] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:28,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:28,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 18] total 34 [2024-11-18 14:37:28,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822255714] [2024-11-18 14:37:28,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:28,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-18 14:37:28,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:28,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-18 14:37:28,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=998, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 14:37:28,780 INFO L87 Difference]: Start difference. First operand 898 states and 1126 transitions. Second operand has 34 states, 33 states have (on average 8.272727272727273) internal successors, (273), 31 states have internal predecessors, (273), 14 states have call successors, (51), 8 states have call predecessors, (51), 10 states have return successors, (50), 15 states have call predecessors, (50), 13 states have call successors, (50) [2024-11-18 14:37:42,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:42,732 INFO L93 Difference]: Finished difference Result 13757 states and 18805 transitions. [2024-11-18 14:37:42,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 465 states. [2024-11-18 14:37:42,733 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 8.272727272727273) internal successors, (273), 31 states have internal predecessors, (273), 14 states have call successors, (51), 8 states have call predecessors, (51), 10 states have return successors, (50), 15 states have call predecessors, (50), 13 states have call successors, (50) Word has length 340 [2024-11-18 14:37:42,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:42,782 INFO L225 Difference]: With dead ends: 13757 [2024-11-18 14:37:42,782 INFO L226 Difference]: Without dead ends: 13224 [2024-11-18 14:37:42,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1209 GetRequests, 717 SyntacticMatches, 1 SemanticMatches, 491 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109549 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=13656, Invalid=228900, Unknown=0, NotChecked=0, Total=242556 [2024-11-18 14:37:42,810 INFO L432 NwaCegarLoop]: 988 mSDtfsCounter, 12450 mSDsluCounter, 15090 mSDsCounter, 0 mSdLazyCounter, 7335 mSolverCounterSat, 2759 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12466 SdHoareTripleChecker+Valid, 16078 SdHoareTripleChecker+Invalid, 10094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2759 IncrementalHoareTripleChecker+Valid, 7335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:42,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12466 Valid, 16078 Invalid, 10094 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2759 Valid, 7335 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-18 14:37:42,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13224 states. [2024-11-18 14:37:43,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13224 to 2283. [2024-11-18 14:37:43,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 1943 states have (on average 1.2660833762223367) internal successors, (2460), 1955 states have internal predecessors, (2460), 226 states have call successors, (226), 113 states have call predecessors, (226), 113 states have return successors, (226), 214 states have call predecessors, (226), 226 states have call successors, (226) [2024-11-18 14:37:43,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 2912 transitions. [2024-11-18 14:37:43,036 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 2912 transitions. Word has length 340 [2024-11-18 14:37:43,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:43,037 INFO L471 AbstractCegarLoop]: Abstraction has 2283 states and 2912 transitions. [2024-11-18 14:37:43,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 8.272727272727273) internal successors, (273), 31 states have internal predecessors, (273), 14 states have call successors, (51), 8 states have call predecessors, (51), 10 states have return successors, (50), 15 states have call predecessors, (50), 13 states have call successors, (50) [2024-11-18 14:37:43,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 2912 transitions. [2024-11-18 14:37:43,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-11-18 14:37:43,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:43,042 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:43,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 14:37:43,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-18 14:37:43,243 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:43,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:43,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1208992398, now seen corresponding path program 1 times [2024-11-18 14:37:43,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:43,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899578078] [2024-11-18 14:37:43,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:43,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:44,054 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 16 proven. 23 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2024-11-18 14:37:44,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:44,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899578078] [2024-11-18 14:37:44,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899578078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:44,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954104624] [2024-11-18 14:37:44,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:44,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:44,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:44,056 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:44,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 14:37:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:44,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-18 14:37:44,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:44,927 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 195 proven. 100 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2024-11-18 14:37:44,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:45,528 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 14 proven. 25 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2024-11-18 14:37:45,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954104624] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:45,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:45,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 18] total 38 [2024-11-18 14:37:45,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963135950] [2024-11-18 14:37:45,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:45,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-18 14:37:45,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:45,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-18 14:37:45,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2024-11-18 14:37:45,530 INFO L87 Difference]: Start difference. First operand 2283 states and 2912 transitions. Second operand has 38 states, 37 states have (on average 8.72972972972973) internal successors, (323), 35 states have internal predecessors, (323), 17 states have call successors, (60), 8 states have call predecessors, (60), 10 states have return successors, (59), 18 states have call predecessors, (59), 16 states have call successors, (59) [2024-11-18 14:37:55,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:55,694 INFO L93 Difference]: Finished difference Result 21951 states and 29656 transitions. [2024-11-18 14:37:55,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 300 states. [2024-11-18 14:37:55,695 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 8.72972972972973) internal successors, (323), 35 states have internal predecessors, (323), 17 states have call successors, (60), 8 states have call predecessors, (60), 10 states have return successors, (59), 18 states have call predecessors, (59), 16 states have call successors, (59) Word has length 341 [2024-11-18 14:37:55,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:55,750 INFO L225 Difference]: With dead ends: 21951 [2024-11-18 14:37:55,750 INFO L226 Difference]: Without dead ends: 20168 [2024-11-18 14:37:55,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1028 GetRequests, 697 SyntacticMatches, 0 SemanticMatches, 331 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46659 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=8956, Invalid=101600, Unknown=0, NotChecked=0, Total=110556 [2024-11-18 14:37:55,765 INFO L432 NwaCegarLoop]: 798 mSDtfsCounter, 4588 mSDsluCounter, 14391 mSDsCounter, 0 mSdLazyCounter, 8097 mSolverCounterSat, 989 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4588 SdHoareTripleChecker+Valid, 15189 SdHoareTripleChecker+Invalid, 9086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 989 IncrementalHoareTripleChecker+Valid, 8097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:55,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4588 Valid, 15189 Invalid, 9086 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [989 Valid, 8097 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-18 14:37:55,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20168 states. [2024-11-18 14:37:56,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20168 to 3481. [2024-11-18 14:37:56,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3481 states, 2981 states have (on average 1.2891647098289165) internal successors, (3843), 2997 states have internal predecessors, (3843), 317 states have call successors, (317), 182 states have call predecessors, (317), 182 states have return successors, (317), 301 states have call predecessors, (317), 317 states have call successors, (317) [2024-11-18 14:37:56,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3481 states to 3481 states and 4477 transitions. [2024-11-18 14:37:56,139 INFO L78 Accepts]: Start accepts. Automaton has 3481 states and 4477 transitions. Word has length 341 [2024-11-18 14:37:56,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:56,140 INFO L471 AbstractCegarLoop]: Abstraction has 3481 states and 4477 transitions. [2024-11-18 14:37:56,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 8.72972972972973) internal successors, (323), 35 states have internal predecessors, (323), 17 states have call successors, (60), 8 states have call predecessors, (60), 10 states have return successors, (59), 18 states have call predecessors, (59), 16 states have call successors, (59) [2024-11-18 14:37:56,140 INFO L276 IsEmpty]: Start isEmpty. Operand 3481 states and 4477 transitions. [2024-11-18 14:37:56,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-11-18 14:37:56,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:56,152 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:37:56,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 14:37:56,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-18 14:37:56,353 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:56,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:56,353 INFO L85 PathProgramCache]: Analyzing trace with hash 202609910, now seen corresponding path program 1 times [2024-11-18 14:37:56,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:56,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629492393] [2024-11-18 14:37:56,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:56,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:57,543 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 33 proven. 69 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2024-11-18 14:37:57,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:57,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629492393] [2024-11-18 14:37:57,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629492393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:57,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143513628] [2024-11-18 14:37:57,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:57,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:57,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:57,546 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:57,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 14:37:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:57,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 1305 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-18 14:37:57,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:58,017 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 190 proven. 102 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2024-11-18 14:37:58,017 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 33 proven. 69 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2024-11-18 14:37:58,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143513628] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:58,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:58,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 33 [2024-11-18 14:37:58,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60672666] [2024-11-18 14:37:58,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:58,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-18 14:37:58,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:58,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-18 14:37:58,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=934, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 14:37:58,521 INFO L87 Difference]: Start difference. First operand 3481 states and 4477 transitions. Second operand has 33 states, 33 states have (on average 7.424242424242424) internal successors, (245), 27 states have internal predecessors, (245), 7 states have call successors, (41), 8 states have call predecessors, (41), 16 states have return successors, (45), 12 states have call predecessors, (45), 6 states have call successors, (45) [2024-11-18 14:38:02,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:02,753 INFO L93 Difference]: Finished difference Result 12987 states and 17042 transitions. [2024-11-18 14:38:02,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-18 14:38:02,754 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 7.424242424242424) internal successors, (245), 27 states have internal predecessors, (245), 7 states have call successors, (41), 8 states have call predecessors, (41), 16 states have return successors, (45), 12 states have call predecessors, (45), 6 states have call successors, (45) Word has length 342 [2024-11-18 14:38:02,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:02,789 INFO L225 Difference]: With dead ends: 12987 [2024-11-18 14:38:02,790 INFO L226 Difference]: Without dead ends: 10222 [2024-11-18 14:38:02,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 678 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1283 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=983, Invalid=4869, Unknown=0, NotChecked=0, Total=5852 [2024-11-18 14:38:02,799 INFO L432 NwaCegarLoop]: 650 mSDtfsCounter, 1688 mSDsluCounter, 9783 mSDsCounter, 0 mSdLazyCounter, 5686 mSolverCounterSat, 579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 10433 SdHoareTripleChecker+Invalid, 6265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 579 IncrementalHoareTripleChecker+Valid, 5686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:02,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1688 Valid, 10433 Invalid, 6265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [579 Valid, 5686 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-18 14:38:02,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10222 states. [2024-11-18 14:38:03,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10222 to 4548. [2024-11-18 14:38:03,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4548 states, 3841 states have (on average 1.2803957302785733) internal successors, (4918), 3866 states have internal predecessors, (4918), 454 states have call successors, (454), 247 states have call predecessors, (454), 252 states have return successors, (464), 434 states have call predecessors, (464), 454 states have call successors, (464) [2024-11-18 14:38:03,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4548 states to 4548 states and 5836 transitions. [2024-11-18 14:38:03,317 INFO L78 Accepts]: Start accepts. Automaton has 4548 states and 5836 transitions. Word has length 342 [2024-11-18 14:38:03,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:03,317 INFO L471 AbstractCegarLoop]: Abstraction has 4548 states and 5836 transitions. [2024-11-18 14:38:03,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 7.424242424242424) internal successors, (245), 27 states have internal predecessors, (245), 7 states have call successors, (41), 8 states have call predecessors, (41), 16 states have return successors, (45), 12 states have call predecessors, (45), 6 states have call successors, (45) [2024-11-18 14:38:03,318 INFO L276 IsEmpty]: Start isEmpty. Operand 4548 states and 5836 transitions. [2024-11-18 14:38:03,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-11-18 14:38:03,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:03,326 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2024-11-18 14:38:03,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-18 14:38:03,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-18 14:38:03,527 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:03,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:03,528 INFO L85 PathProgramCache]: Analyzing trace with hash 6096405, now seen corresponding path program 1 times [2024-11-18 14:38:03,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:03,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140831942] [2024-11-18 14:38:03,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:03,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:03,644 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2024-11-18 14:38:03,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:03,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140831942] [2024-11-18 14:38:03,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140831942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:03,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:38:03,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:38:03,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401038137] [2024-11-18 14:38:03,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:03,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:38:03,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:03,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:38:03,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:38:03,646 INFO L87 Difference]: Start difference. First operand 4548 states and 5836 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 14:38:04,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:04,075 INFO L93 Difference]: Finished difference Result 9249 states and 11855 transitions. [2024-11-18 14:38:04,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:38:04,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 342 [2024-11-18 14:38:04,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:04,087 INFO L225 Difference]: With dead ends: 9249 [2024-11-18 14:38:04,088 INFO L226 Difference]: Without dead ends: 4528 [2024-11-18 14:38:04,095 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 [2024-11-18 14:38:04,097 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 26 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:04,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 649 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:38:04,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4528 states. [2024-11-18 14:38:04,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4528 to 4528. [2024-11-18 14:38:04,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4528 states, 3826 states have (on average 1.255880815473079) internal successors, (4805), 3851 states have internal predecessors, (4805), 454 states have call successors, (454), 247 states have call predecessors, (454), 247 states have return successors, (454), 429 states have call predecessors, (454), 454 states have call successors, (454) [2024-11-18 14:38:04,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4528 states to 4528 states and 5713 transitions. [2024-11-18 14:38:04,520 INFO L78 Accepts]: Start accepts. Automaton has 4528 states and 5713 transitions. Word has length 342 [2024-11-18 14:38:04,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:04,521 INFO L471 AbstractCegarLoop]: Abstraction has 4528 states and 5713 transitions. [2024-11-18 14:38:04,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 14:38:04,521 INFO L276 IsEmpty]: Start isEmpty. Operand 4528 states and 5713 transitions. [2024-11-18 14:38:04,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-11-18 14:38:04,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:04,529 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2024-11-18 14:38:04,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-18 14:38:04,529 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:04,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:04,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1859134570, now seen corresponding path program 1 times [2024-11-18 14:38:04,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:04,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133270866] [2024-11-18 14:38:04,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:04,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2024-11-18 14:38:04,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:04,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133270866] [2024-11-18 14:38:04,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133270866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:04,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:38:04,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:38:04,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167863217] [2024-11-18 14:38:04,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:04,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:38:04,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:04,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:38:04,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:38:04,689 INFO L87 Difference]: Start difference. First operand 4528 states and 5713 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:38:04,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:04,997 INFO L93 Difference]: Finished difference Result 6930 states and 8775 transitions. [2024-11-18 14:38:04,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:38:04,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 342 [2024-11-18 14:38:04,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:05,006 INFO L225 Difference]: With dead ends: 6930 [2024-11-18 14:38:05,006 INFO L226 Difference]: Without dead ends: 2886 [2024-11-18 14:38:05,012 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 [2024-11-18 14:38:05,015 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 0 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:05,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 471 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:38:05,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2024-11-18 14:38:05,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2886. [2024-11-18 14:38:05,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2426 states have (on average 1.2452596867271228) internal successors, (3021), 2442 states have internal predecessors, (3021), 297 states have call successors, (297), 162 states have call predecessors, (297), 162 states have return successors, (297), 281 states have call predecessors, (297), 297 states have call successors, (297) [2024-11-18 14:38:05,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 3615 transitions. [2024-11-18 14:38:05,294 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 3615 transitions. Word has length 342 [2024-11-18 14:38:05,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:05,294 INFO L471 AbstractCegarLoop]: Abstraction has 2886 states and 3615 transitions. [2024-11-18 14:38:05,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:38:05,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 3615 transitions. [2024-11-18 14:38:05,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2024-11-18 14:38:05,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:05,301 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2024-11-18 14:38:05,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-18 14:38:05,301 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:05,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:05,302 INFO L85 PathProgramCache]: Analyzing trace with hash -917418757, now seen corresponding path program 1 times [2024-11-18 14:38:05,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:05,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351380806] [2024-11-18 14:38:05,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:05,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:06,475 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 56 proven. 52 refuted. 0 times theorem prover too weak. 821 trivial. 0 not checked. [2024-11-18 14:38:06,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:06,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351380806] [2024-11-18 14:38:06,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351380806] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:06,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211886965] [2024-11-18 14:38:06,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:06,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:06,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:06,480 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:38:06,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 14:38:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:06,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-18 14:38:06,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:06,974 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 258 proven. 89 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2024-11-18 14:38:06,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:38:07,553 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 56 proven. 52 refuted. 0 times theorem prover too weak. 821 trivial. 0 not checked. [2024-11-18 14:38:07,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211886965] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:38:07,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:38:07,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 33 [2024-11-18 14:38:07,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585827861] [2024-11-18 14:38:07,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:38:07,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-18 14:38:07,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:07,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-18 14:38:07,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=934, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 14:38:07,556 INFO L87 Difference]: Start difference. First operand 2886 states and 3615 transitions. Second operand has 33 states, 33 states have (on average 7.9393939393939394) internal successors, (262), 27 states have internal predecessors, (262), 7 states have call successors, (46), 8 states have call predecessors, (46), 16 states have return successors, (49), 12 states have call predecessors, (49), 6 states have call successors, (49) [2024-11-18 14:38:11,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:11,292 INFO L93 Difference]: Finished difference Result 11296 states and 14452 transitions. [2024-11-18 14:38:11,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-18 14:38:11,293 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 7.9393939393939394) internal successors, (262), 27 states have internal predecessors, (262), 7 states have call successors, (46), 8 states have call predecessors, (46), 16 states have return successors, (49), 12 states have call predecessors, (49), 6 states have call successors, (49) Word has length 352 [2024-11-18 14:38:11,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:11,319 INFO L225 Difference]: With dead ends: 11296 [2024-11-18 14:38:11,319 INFO L226 Difference]: Without dead ends: 9025 [2024-11-18 14:38:11,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 715 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1239 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=970, Invalid=4730, Unknown=0, NotChecked=0, Total=5700 [2024-11-18 14:38:11,331 INFO L432 NwaCegarLoop]: 647 mSDtfsCounter, 2040 mSDsluCounter, 8635 mSDsCounter, 0 mSdLazyCounter, 4647 mSolverCounterSat, 659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2040 SdHoareTripleChecker+Valid, 9282 SdHoareTripleChecker+Invalid, 5306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 659 IncrementalHoareTripleChecker+Valid, 4647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:11,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2040 Valid, 9282 Invalid, 5306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [659 Valid, 4647 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-18 14:38:11,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9025 states. [2024-11-18 14:38:11,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9025 to 3832. [2024-11-18 14:38:11,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3832 states, 3178 states have (on average 1.2331655129011958) internal successors, (3919), 3203 states have internal predecessors, (3919), 430 states have call successors, (430), 223 states have call predecessors, (430), 223 states have return successors, (430), 405 states have call predecessors, (430), 430 states have call successors, (430) [2024-11-18 14:38:11,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3832 states to 3832 states and 4779 transitions. [2024-11-18 14:38:11,858 INFO L78 Accepts]: Start accepts. Automaton has 3832 states and 4779 transitions. Word has length 352 [2024-11-18 14:38:11,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:11,859 INFO L471 AbstractCegarLoop]: Abstraction has 3832 states and 4779 transitions. [2024-11-18 14:38:11,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 7.9393939393939394) internal successors, (262), 27 states have internal predecessors, (262), 7 states have call successors, (46), 8 states have call predecessors, (46), 16 states have return successors, (49), 12 states have call predecessors, (49), 6 states have call successors, (49) [2024-11-18 14:38:11,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3832 states and 4779 transitions. [2024-11-18 14:38:11,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2024-11-18 14:38:11,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:11,867 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:38:11,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-18 14:38:12,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:12,068 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:12,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:12,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2018349588, now seen corresponding path program 1 times [2024-11-18 14:38:12,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:12,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246997256] [2024-11-18 14:38:12,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:12,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2024-11-18 14:38:12,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:12,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246997256] [2024-11-18 14:38:12,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246997256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:12,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:38:12,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:38:12,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097927803] [2024-11-18 14:38:12,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:12,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:38:12,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:12,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:38:12,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:38:12,252 INFO L87 Difference]: Start difference. First operand 3832 states and 4779 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-18 14:38:12,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:12,529 INFO L93 Difference]: Finished difference Result 5917 states and 7406 transitions. [2024-11-18 14:38:12,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:38:12,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 353 [2024-11-18 14:38:12,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:12,539 INFO L225 Difference]: With dead ends: 5917 [2024-11-18 14:38:12,539 INFO L226 Difference]: Without dead ends: 2506 [2024-11-18 14:38:12,546 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 [2024-11-18 14:38:12,546 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 0 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:12,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 467 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:38:12,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2024-11-18 14:38:12,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2506. [2024-11-18 14:38:12,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 2066 states have (on average 1.223136495643756) internal successors, (2527), 2082 states have internal predecessors, (2527), 287 states have call successors, (287), 152 states have call predecessors, (287), 152 states have return successors, (287), 271 states have call predecessors, (287), 287 states have call successors, (287) [2024-11-18 14:38:12,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 3101 transitions. [2024-11-18 14:38:12,900 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 3101 transitions. Word has length 353 [2024-11-18 14:38:12,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:12,900 INFO L471 AbstractCegarLoop]: Abstraction has 2506 states and 3101 transitions. [2024-11-18 14:38:12,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-18 14:38:12,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 3101 transitions. [2024-11-18 14:38:12,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-11-18 14:38:12,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:12,906 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 9, 8, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2024-11-18 14:38:12,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-18 14:38:12,906 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:12,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:12,907 INFO L85 PathProgramCache]: Analyzing trace with hash 538336336, now seen corresponding path program 1 times [2024-11-18 14:38:12,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:12,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838910278] [2024-11-18 14:38:12,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:12,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:13,109 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 907 trivial. 0 not checked. [2024-11-18 14:38:13,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:13,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838910278] [2024-11-18 14:38:13,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838910278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:13,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827501254] [2024-11-18 14:38:13,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:13,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:13,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:13,114 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:38:13,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 14:38:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:13,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 1354 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 14:38:13,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:13,665 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 127 proven. 204 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2024-11-18 14:38:13,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:38:13,895 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2024-11-18 14:38:13,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827501254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:38:13,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:38:13,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 12] total 19 [2024-11-18 14:38:13,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289411593] [2024-11-18 14:38:13,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:38:13,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 14:38:13,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:13,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 14:38:13,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2024-11-18 14:38:13,897 INFO L87 Difference]: Start difference. First operand 2506 states and 3101 transitions. Second operand has 19 states, 19 states have (on average 14.157894736842104) internal successors, (269), 17 states have internal predecessors, (269), 7 states have call successors, (65), 6 states have call predecessors, (65), 9 states have return successors, (64), 9 states have call predecessors, (64), 7 states have call successors, (64) [2024-11-18 14:38:16,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:16,258 INFO L93 Difference]: Finished difference Result 9657 states and 12067 transitions. [2024-11-18 14:38:16,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-18 14:38:16,258 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 14.157894736842104) internal successors, (269), 17 states have internal predecessors, (269), 7 states have call successors, (65), 6 states have call predecessors, (65), 9 states have return successors, (64), 9 states have call predecessors, (64), 7 states have call successors, (64) Word has length 358 [2024-11-18 14:38:16,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:16,278 INFO L225 Difference]: With dead ends: 9657 [2024-11-18 14:38:16,278 INFO L226 Difference]: Without dead ends: 7702 [2024-11-18 14:38:16,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 712 SyntacticMatches, 9 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1986 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=666, Invalid=6140, Unknown=0, NotChecked=0, Total=6806 [2024-11-18 14:38:16,285 INFO L432 NwaCegarLoop]: 496 mSDtfsCounter, 1560 mSDsluCounter, 6230 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 6726 SdHoareTripleChecker+Invalid, 2466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:16,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1567 Valid, 6726 Invalid, 2466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 14:38:16,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7702 states. [2024-11-18 14:38:16,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7702 to 4399. [2024-11-18 14:38:16,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4399 states, 3631 states have (on average 1.2285871660699532) internal successors, (4461), 3659 states have internal predecessors, (4461), 503 states have call successors, (503), 264 states have call predecessors, (503), 264 states have return successors, (503), 475 states have call predecessors, (503), 503 states have call successors, (503) [2024-11-18 14:38:16,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4399 states to 4399 states and 5467 transitions. [2024-11-18 14:38:16,894 INFO L78 Accepts]: Start accepts. Automaton has 4399 states and 5467 transitions. Word has length 358 [2024-11-18 14:38:16,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:16,895 INFO L471 AbstractCegarLoop]: Abstraction has 4399 states and 5467 transitions. [2024-11-18 14:38:16,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.157894736842104) internal successors, (269), 17 states have internal predecessors, (269), 7 states have call successors, (65), 6 states have call predecessors, (65), 9 states have return successors, (64), 9 states have call predecessors, (64), 7 states have call successors, (64) [2024-11-18 14:38:16,895 INFO L276 IsEmpty]: Start isEmpty. Operand 4399 states and 5467 transitions. [2024-11-18 14:38:16,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2024-11-18 14:38:16,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:16,902 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:38:16,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-18 14:38:17,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:17,103 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:17,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:17,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2102268069, now seen corresponding path program 1 times [2024-11-18 14:38:17,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:17,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032447540] [2024-11-18 14:38:17,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:17,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:18,366 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 42 proven. 201 refuted. 0 times theorem prover too weak. 751 trivial. 0 not checked. [2024-11-18 14:38:18,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:18,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032447540] [2024-11-18 14:38:18,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032447540] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:18,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755342170] [2024-11-18 14:38:18,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:18,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:18,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:18,367 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:38:18,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-18 14:38:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:18,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 1354 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-18 14:38:18,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:19,068 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 412 proven. 200 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2024-11-18 14:38:19,068 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:38:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 46 proven. 197 refuted. 0 times theorem prover too weak. 751 trivial. 0 not checked. [2024-11-18 14:38:19,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755342170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:38:19,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:38:19,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 19] total 45 [2024-11-18 14:38:19,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185860442] [2024-11-18 14:38:19,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:38:19,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-18 14:38:19,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:19,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-18 14:38:19,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1782, Unknown=0, NotChecked=0, Total=1980 [2024-11-18 14:38:19,694 INFO L87 Difference]: Start difference. First operand 4399 states and 5467 transitions. Second operand has 45 states, 43 states have (on average 7.3023255813953485) internal successors, (314), 38 states have internal predecessors, (314), 15 states have call successors, (54), 10 states have call predecessors, (54), 17 states have return successors, (57), 17 states have call predecessors, (57), 14 states have call successors, (57) [2024-11-18 14:38:22,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:22,738 INFO L93 Difference]: Finished difference Result 10168 states and 12927 transitions. [2024-11-18 14:38:22,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-18 14:38:22,738 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 7.3023255813953485) internal successors, (314), 38 states have internal predecessors, (314), 15 states have call successors, (54), 10 states have call predecessors, (54), 17 states have return successors, (57), 17 states have call predecessors, (57), 14 states have call successors, (57) Word has length 363 [2024-11-18 14:38:22,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:22,757 INFO L225 Difference]: With dead ends: 10168 [2024-11-18 14:38:22,757 INFO L226 Difference]: Without dead ends: 6248 [2024-11-18 14:38:22,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1116 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=639, Invalid=4763, Unknown=0, NotChecked=0, Total=5402 [2024-11-18 14:38:22,767 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 1432 mSDsluCounter, 5601 mSDsCounter, 0 mSdLazyCounter, 3728 mSolverCounterSat, 495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 5828 SdHoareTripleChecker+Invalid, 4223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Valid, 3728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:22,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 5828 Invalid, 4223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [495 Valid, 3728 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 14:38:22,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6248 states. [2024-11-18 14:38:23,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6248 to 4745. [2024-11-18 14:38:23,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4745 states, 3931 states have (on average 1.2203001780717375) internal successors, (4797), 3959 states have internal predecessors, (4797), 528 states have call successors, (528), 283 states have call predecessors, (528), 285 states have return successors, (532), 502 states have call predecessors, (532), 528 states have call successors, (532) [2024-11-18 14:38:23,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4745 states to 4745 states and 5857 transitions. [2024-11-18 14:38:23,432 INFO L78 Accepts]: Start accepts. Automaton has 4745 states and 5857 transitions. Word has length 363 [2024-11-18 14:38:23,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:23,432 INFO L471 AbstractCegarLoop]: Abstraction has 4745 states and 5857 transitions. [2024-11-18 14:38:23,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 7.3023255813953485) internal successors, (314), 38 states have internal predecessors, (314), 15 states have call successors, (54), 10 states have call predecessors, (54), 17 states have return successors, (57), 17 states have call predecessors, (57), 14 states have call successors, (57) [2024-11-18 14:38:23,433 INFO L276 IsEmpty]: Start isEmpty. Operand 4745 states and 5857 transitions. [2024-11-18 14:38:23,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2024-11-18 14:38:23,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:23,438 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:38:23,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-18 14:38:23,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-18 14:38:23,639 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:23,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:23,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1690985373, now seen corresponding path program 1 times [2024-11-18 14:38:23,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:23,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980230369] [2024-11-18 14:38:23,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:23,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:23,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 9 proven. 139 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2024-11-18 14:38:23,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:23,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980230369] [2024-11-18 14:38:23,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980230369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:23,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029339736] [2024-11-18 14:38:23,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:23,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:23,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:23,738 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:38:23,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-18 14:38:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:23,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 1354 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 14:38:23,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:23,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2024-11-18 14:38:23,965 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:38:23,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029339736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:38:23,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:38:23,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-18 14:38:23,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740084116] [2024-11-18 14:38:23,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:38:23,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:38:23,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:23,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:38:23,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:38:23,966 INFO L87 Difference]: Start difference. First operand 4745 states and 5857 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-18 14:38:24,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:24,541 INFO L93 Difference]: Finished difference Result 9145 states and 11325 transitions. [2024-11-18 14:38:24,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:38:24,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 366 [2024-11-18 14:38:24,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:24,555 INFO L225 Difference]: With dead ends: 9145 [2024-11-18 14:38:24,555 INFO L226 Difference]: Without dead ends: 4401 [2024-11-18 14:38:24,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:38:24,566 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 18 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:24,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 618 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:38:24,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4401 states. [2024-11-18 14:38:25,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4401 to 4401. [2024-11-18 14:38:25,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4401 states, 3632 states have (on average 1.2265969162995596) internal successors, (4455), 3660 states have internal predecessors, (4455), 503 states have call successors, (503), 265 states have call predecessors, (503), 265 states have return successors, (503), 475 states have call predecessors, (503), 503 states have call successors, (503) [2024-11-18 14:38:25,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4401 states to 4401 states and 5461 transitions. [2024-11-18 14:38:25,181 INFO L78 Accepts]: Start accepts. Automaton has 4401 states and 5461 transitions. Word has length 366 [2024-11-18 14:38:25,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:25,181 INFO L471 AbstractCegarLoop]: Abstraction has 4401 states and 5461 transitions. [2024-11-18 14:38:25,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-18 14:38:25,182 INFO L276 IsEmpty]: Start isEmpty. Operand 4401 states and 5461 transitions. [2024-11-18 14:38:25,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-11-18 14:38:25,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:25,187 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:38:25,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-18 14:38:25,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:25,390 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:25,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:25,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1455207030, now seen corresponding path program 1 times [2024-11-18 14:38:25,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:25,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201665062] [2024-11-18 14:38:25,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:25,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat