./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.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 b1fa78b32466948213cdbfc05d3adcde2ac2fc14323ec3ac2f4b441976452676 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 19:04:42,268 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 19:04:42,323 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 19:04:42,326 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 19:04:42,327 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 19:04:42,342 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 19:04:42,342 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 19:04:42,343 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 19:04:42,343 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 19:04:42,343 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 19:04:42,343 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 19:04:42,343 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 19:04:42,343 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 19:04:42,343 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 19:04:42,344 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 19:04:42,344 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 19:04:42,344 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 19:04:42,344 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 19:04:42,344 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 19:04:42,344 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 19:04:42,344 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 19:04:42,344 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 19:04:42,344 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 19:04:42,344 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 19:04:42,344 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 19:04:42,345 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 19:04:42,345 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 19:04:42,345 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 19:04:42,345 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 19:04:42,345 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 19:04:42,345 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 19:04:42,345 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 19:04:42,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:04:42,345 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 19:04:42,345 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 19:04:42,345 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 19:04:42,345 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 19:04:42,345 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 19:04:42,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 19:04:42,346 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 19:04:42,346 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 19:04:42,346 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 19:04:42,346 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 19:04:42,346 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> b1fa78b32466948213cdbfc05d3adcde2ac2fc14323ec3ac2f4b441976452676 [2025-03-16 19:04:42,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 19:04:42,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 19:04:42,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 19:04:42,574 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 19:04:42,574 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 19:04:42,575 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2025-03-16 19:04:43,740 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f53099ded/7f6d8afd2fa248fca12ae94c8c82f463/FLAGc7c9b280b [2025-03-16 19:04:44,041 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 19:04:44,042 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2025-03-16 19:04:44,054 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f53099ded/7f6d8afd2fa248fca12ae94c8c82f463/FLAGc7c9b280b [2025-03-16 19:04:44,069 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f53099ded/7f6d8afd2fa248fca12ae94c8c82f463 [2025-03-16 19:04:44,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 19:04:44,073 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 19:04:44,075 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 19:04:44,075 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 19:04:44,078 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 19:04:44,080 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:04:44" (1/1) ... [2025-03-16 19:04:44,082 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac4823c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:44, skipping insertion in model container [2025-03-16 19:04:44,082 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:04:44" (1/1) ... [2025-03-16 19:04:44,108 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 19:04:44,259 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c[14595,14608] [2025-03-16 19:04:44,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:04:44,272 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 19:04:44,314 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c[14595,14608] [2025-03-16 19:04:44,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:04:44,331 INFO L204 MainTranslator]: Completed translation [2025-03-16 19:04:44,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:44 WrapperNode [2025-03-16 19:04:44,332 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 19:04:44,333 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 19:04:44,333 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 19:04:44,333 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 19:04:44,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:44" (1/1) ... [2025-03-16 19:04:44,347 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:44" (1/1) ... [2025-03-16 19:04:44,372 INFO L138 Inliner]: procedures = 32, calls = 47, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 508 [2025-03-16 19:04:44,373 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 19:04:44,373 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 19:04:44,373 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 19:04:44,373 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 19:04:44,379 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:44" (1/1) ... [2025-03-16 19:04:44,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:44" (1/1) ... [2025-03-16 19:04:44,384 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:44" (1/1) ... [2025-03-16 19:04:44,399 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]. [2025-03-16 19:04:44,399 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:44" (1/1) ... [2025-03-16 19:04:44,399 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:44" (1/1) ... [2025-03-16 19:04:44,408 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:44" (1/1) ... [2025-03-16 19:04:44,414 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:44" (1/1) ... [2025-03-16 19:04:44,418 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:44" (1/1) ... [2025-03-16 19:04:44,421 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:44" (1/1) ... [2025-03-16 19:04:44,426 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 19:04:44,428 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 19:04:44,428 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 19:04:44,428 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 19:04:44,429 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:44" (1/1) ... [2025-03-16 19:04:44,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:04:44,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:04:44,457 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) [2025-03-16 19:04:44,463 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 [2025-03-16 19:04:44,478 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2025-03-16 19:04:44,478 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2025-03-16 19:04:44,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 19:04:44,478 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2025-03-16 19:04:44,478 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2025-03-16 19:04:44,478 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2025-03-16 19:04:44,478 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2025-03-16 19:04:44,478 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-16 19:04:44,479 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-16 19:04:44,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 19:04:44,479 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2025-03-16 19:04:44,479 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2025-03-16 19:04:44,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 19:04:44,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 19:04:44,479 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2025-03-16 19:04:44,479 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2025-03-16 19:04:44,570 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 19:04:44,572 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 19:04:45,087 INFO L? ?]: Removed 104 outVars from TransFormulas that were not future-live. [2025-03-16 19:04:45,087 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 19:04:45,100 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 19:04:45,100 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 19:04:45,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:04:45 BoogieIcfgContainer [2025-03-16 19:04:45,101 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 19:04:45,102 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 19:04:45,102 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 19:04:45,105 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 19:04:45,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 07:04:44" (1/3) ... [2025-03-16 19:04:45,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2523e5fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:04:45, skipping insertion in model container [2025-03-16 19:04:45,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:04:44" (2/3) ... [2025-03-16 19:04:45,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2523e5fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:04:45, skipping insertion in model container [2025-03-16 19:04:45,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:04:45" (3/3) ... [2025-03-16 19:04:45,108 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2025-03-16 19:04:45,118 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 19:04:45,120 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c that has 7 procedures, 164 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 19:04:45,202 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 19:04:45,212 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;@1416bd65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 19:04:45,212 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 19:04:45,217 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 127 states have (on average 1.5984251968503937) internal successors, (203), 128 states have internal predecessors, (203), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2025-03-16 19:04:45,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-16 19:04:45,222 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:45,223 INFO L218 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] [2025-03-16 19:04:45,223 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:45,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:45,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1132045771, now seen corresponding path program 1 times [2025-03-16 19:04:45,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:45,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072344511] [2025-03-16 19:04:45,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:45,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:45,293 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-16 19:04:45,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-16 19:04:45,330 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:45,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:45,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:04:45,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:45,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072344511] [2025-03-16 19:04:45,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072344511] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:45,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:45,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 19:04:45,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740936858] [2025-03-16 19:04:45,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:45,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 19:04:45,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:45,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 19:04:45,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 19:04:45,449 INFO L87 Difference]: Start difference. First operand has 164 states, 127 states have (on average 1.5984251968503937) internal successors, (203), 128 states have internal predecessors, (203), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 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) [2025-03-16 19:04:45,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:45,483 INFO L93 Difference]: Finished difference Result 313 states and 523 transitions. [2025-03-16 19:04:45,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 19:04:45,484 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 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 [2025-03-16 19:04:45,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:45,489 INFO L225 Difference]: With dead ends: 313 [2025-03-16 19:04:45,489 INFO L226 Difference]: Without dead ends: 162 [2025-03-16 19:04:45,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 19:04:45,494 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:45,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:04:45,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2025-03-16 19:04:45,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2025-03-16 19:04:45,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 126 states have (on average 1.5793650793650793) internal successors, (199), 126 states have internal predecessors, (199), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2025-03-16 19:04:45,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 257 transitions. [2025-03-16 19:04:45,539 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 257 transitions. Word has length 23 [2025-03-16 19:04:45,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:45,539 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 257 transitions. [2025-03-16 19:04:45,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 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) [2025-03-16 19:04:45,539 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 257 transitions. [2025-03-16 19:04:45,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-16 19:04:45,540 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:45,540 INFO L218 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] [2025-03-16 19:04:45,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 19:04:45,541 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:45,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:45,541 INFO L85 PathProgramCache]: Analyzing trace with hash 134973418, now seen corresponding path program 1 times [2025-03-16 19:04:45,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:45,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156242663] [2025-03-16 19:04:45,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:45,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:45,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-16 19:04:45,592 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-16 19:04:45,592 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:45,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:45,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:04:45,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:45,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156242663] [2025-03-16 19:04:45,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156242663] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:45,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:45,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:04:45,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52996655] [2025-03-16 19:04:45,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:45,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:04:45,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:45,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:04:45,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:04:45,764 INFO L87 Difference]: Start difference. First operand 162 states and 257 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 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) [2025-03-16 19:04:45,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:45,846 INFO L93 Difference]: Finished difference Result 415 states and 665 transitions. [2025-03-16 19:04:45,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:04:45,850 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 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 [2025-03-16 19:04:45,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:45,852 INFO L225 Difference]: With dead ends: 415 [2025-03-16 19:04:45,852 INFO L226 Difference]: Without dead ends: 266 [2025-03-16 19:04:45,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:04:45,856 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 127 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:45,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 1232 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:04:45,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2025-03-16 19:04:45,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 162. [2025-03-16 19:04:45,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 126 states have (on average 1.4841269841269842) internal successors, (187), 126 states have internal predecessors, (187), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2025-03-16 19:04:45,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 245 transitions. [2025-03-16 19:04:45,872 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 245 transitions. Word has length 23 [2025-03-16 19:04:45,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:45,872 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 245 transitions. [2025-03-16 19:04:45,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 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) [2025-03-16 19:04:45,873 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 245 transitions. [2025-03-16 19:04:45,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-03-16 19:04:45,873 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:45,873 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:45,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 19:04:45,873 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:45,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:45,874 INFO L85 PathProgramCache]: Analyzing trace with hash -415804256, now seen corresponding path program 1 times [2025-03-16 19:04:45,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:45,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840233625] [2025-03-16 19:04:45,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:45,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:45,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-16 19:04:45,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-16 19:04:45,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:45,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:46,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:04:46,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:46,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840233625] [2025-03-16 19:04:46,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840233625] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:46,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:46,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:04:46,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084355360] [2025-03-16 19:04:46,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:46,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:04:46,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:46,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:04:46,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:04:46,125 INFO L87 Difference]: Start difference. First operand 162 states and 245 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-16 19:04:46,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:46,179 INFO L93 Difference]: Finished difference Result 312 states and 481 transitions. [2025-03-16 19:04:46,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:04:46,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2025-03-16 19:04:46,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:46,180 INFO L225 Difference]: With dead ends: 312 [2025-03-16 19:04:46,180 INFO L226 Difference]: Without dead ends: 166 [2025-03-16 19:04:46,181 INFO L434 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 [2025-03-16 19:04:46,182 INFO L435 NwaCegarLoop]: 239 mSDtfsCounter, 3 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:46,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 707 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:04:46,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2025-03-16 19:04:46,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2025-03-16 19:04:46,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 129 states have (on average 1.4728682170542635) internal successors, (190), 129 states have internal predecessors, (190), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2025-03-16 19:04:46,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 248 transitions. [2025-03-16 19:04:46,200 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 248 transitions. Word has length 34 [2025-03-16 19:04:46,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:46,200 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 248 transitions. [2025-03-16 19:04:46,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-16 19:04:46,201 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 248 transitions. [2025-03-16 19:04:46,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-03-16 19:04:46,204 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:46,204 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:46,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 19:04:46,204 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:46,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:46,205 INFO L85 PathProgramCache]: Analyzing trace with hash 2083136278, now seen corresponding path program 1 times [2025-03-16 19:04:46,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:46,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085226466] [2025-03-16 19:04:46,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:46,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:46,218 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-16 19:04:46,236 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-16 19:04:46,236 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:46,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:46,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 19:04:46,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:46,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085226466] [2025-03-16 19:04:46,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085226466] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:46,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:46,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:04:46,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514600847] [2025-03-16 19:04:46,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:46,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:04:46,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:46,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:04:46,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:04:46,306 INFO L87 Difference]: Start difference. First operand 166 states and 248 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-16 19:04:46,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:46,341 INFO L93 Difference]: Finished difference Result 458 states and 695 transitions. [2025-03-16 19:04:46,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:04:46,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 48 [2025-03-16 19:04:46,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:46,345 INFO L225 Difference]: With dead ends: 458 [2025-03-16 19:04:46,345 INFO L226 Difference]: Without dead ends: 308 [2025-03-16 19:04:46,345 INFO L434 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 [2025-03-16 19:04:46,348 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 206 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:46,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 485 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:04:46,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2025-03-16 19:04:46,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 304. [2025-03-16 19:04:46,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 232 states have (on average 1.4913793103448276) internal successors, (346), 233 states have internal predecessors, (346), 57 states have call successors, (57), 14 states have call predecessors, (57), 14 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2025-03-16 19:04:46,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 460 transitions. [2025-03-16 19:04:46,376 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 460 transitions. Word has length 48 [2025-03-16 19:04:46,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:46,376 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 460 transitions. [2025-03-16 19:04:46,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-16 19:04:46,377 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 460 transitions. [2025-03-16 19:04:46,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-03-16 19:04:46,378 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:46,378 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:46,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 19:04:46,378 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:46,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:46,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1585796819, now seen corresponding path program 1 times [2025-03-16 19:04:46,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:46,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055414977] [2025-03-16 19:04:46,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:46,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:46,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-03-16 19:04:46,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-03-16 19:04:46,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:46,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:46,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 19:04:46,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:46,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055414977] [2025-03-16 19:04:46,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055414977] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:46,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:46,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:04:46,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264368684] [2025-03-16 19:04:46,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:46,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:04:46,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:46,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:04:46,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:04:46,454 INFO L87 Difference]: Start difference. First operand 304 states and 460 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-16 19:04:46,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:46,500 INFO L93 Difference]: Finished difference Result 860 states and 1310 transitions. [2025-03-16 19:04:46,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:04:46,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2025-03-16 19:04:46,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:46,505 INFO L225 Difference]: With dead ends: 860 [2025-03-16 19:04:46,505 INFO L226 Difference]: Without dead ends: 572 [2025-03-16 19:04:46,506 INFO L434 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 [2025-03-16 19:04:46,507 INFO L435 NwaCegarLoop]: 262 mSDtfsCounter, 202 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:46,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 501 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:04:46,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2025-03-16 19:04:46,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 559. [2025-03-16 19:04:46,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 417 states have (on average 1.4916067146282974) internal successors, (622), 420 states have internal predecessors, (622), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) [2025-03-16 19:04:46,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 848 transitions. [2025-03-16 19:04:46,554 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 848 transitions. Word has length 49 [2025-03-16 19:04:46,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:46,554 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 848 transitions. [2025-03-16 19:04:46,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-16 19:04:46,554 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 848 transitions. [2025-03-16 19:04:46,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-03-16 19:04:46,558 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:46,558 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:46,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 19:04:46,558 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:46,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:46,559 INFO L85 PathProgramCache]: Analyzing trace with hash -78245010, now seen corresponding path program 1 times [2025-03-16 19:04:46,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:46,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175659415] [2025-03-16 19:04:46,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:46,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:46,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-03-16 19:04:46,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-03-16 19:04:46,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:46,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:46,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 19:04:46,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:46,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175659415] [2025-03-16 19:04:46,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175659415] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:46,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:46,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:04:46,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319814506] [2025-03-16 19:04:46,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:46,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:04:46,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:46,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:04:46,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:04:46,689 INFO L87 Difference]: Start difference. First operand 559 states and 848 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-16 19:04:46,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:46,842 INFO L93 Difference]: Finished difference Result 1180 states and 1795 transitions. [2025-03-16 19:04:46,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:04:46,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2025-03-16 19:04:46,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:46,849 INFO L225 Difference]: With dead ends: 1180 [2025-03-16 19:04:46,849 INFO L226 Difference]: Without dead ends: 637 [2025-03-16 19:04:46,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:04:46,853 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 329 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:46,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 626 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:04:46,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2025-03-16 19:04:46,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 629. [2025-03-16 19:04:46,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 479 states have (on average 1.4822546972860124) internal successors, (710), 482 states have internal predecessors, (710), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2025-03-16 19:04:46,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 944 transitions. [2025-03-16 19:04:46,897 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 944 transitions. Word has length 49 [2025-03-16 19:04:46,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:46,898 INFO L471 AbstractCegarLoop]: Abstraction has 629 states and 944 transitions. [2025-03-16 19:04:46,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-16 19:04:46,899 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 944 transitions. [2025-03-16 19:04:46,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-16 19:04:46,900 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:46,901 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:46,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 19:04:46,901 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:46,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:46,902 INFO L85 PathProgramCache]: Analyzing trace with hash 474917283, now seen corresponding path program 1 times [2025-03-16 19:04:46,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:46,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759403891] [2025-03-16 19:04:46,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:46,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:46,916 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-16 19:04:46,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-16 19:04:46,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:46,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:47,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 19:04:47,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:47,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759403891] [2025-03-16 19:04:47,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759403891] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:47,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:47,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:04:47,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49137751] [2025-03-16 19:04:47,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:47,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:04:47,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:47,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:04:47,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:04:47,068 INFO L87 Difference]: Start difference. First operand 629 states and 944 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-16 19:04:47,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:47,211 INFO L93 Difference]: Finished difference Result 1184 states and 1795 transitions. [2025-03-16 19:04:47,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:04:47,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 50 [2025-03-16 19:04:47,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:47,215 INFO L225 Difference]: With dead ends: 1184 [2025-03-16 19:04:47,215 INFO L226 Difference]: Without dead ends: 641 [2025-03-16 19:04:47,217 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:04:47,218 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 329 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:47,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 626 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:04:47,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2025-03-16 19:04:47,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 637. [2025-03-16 19:04:47,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 487 states have (on average 1.4743326488706365) internal successors, (718), 490 states have internal predecessors, (718), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2025-03-16 19:04:47,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 952 transitions. [2025-03-16 19:04:47,273 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 952 transitions. Word has length 50 [2025-03-16 19:04:47,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:47,274 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 952 transitions. [2025-03-16 19:04:47,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-16 19:04:47,274 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 952 transitions. [2025-03-16 19:04:47,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-03-16 19:04:47,275 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:47,275 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:47,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 19:04:47,275 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:47,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:47,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1119695292, now seen corresponding path program 1 times [2025-03-16 19:04:47,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:47,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971015117] [2025-03-16 19:04:47,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:47,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:47,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-16 19:04:47,309 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-16 19:04:47,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:47,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:47,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 19:04:47,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:47,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971015117] [2025-03-16 19:04:47,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971015117] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:47,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:47,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:04:47,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467064021] [2025-03-16 19:04:47,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:47,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:04:47,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:47,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:04:47,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:04:47,413 INFO L87 Difference]: Start difference. First operand 637 states and 952 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-16 19:04:47,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:47,541 INFO L93 Difference]: Finished difference Result 1180 states and 1783 transitions. [2025-03-16 19:04:47,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:04:47,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2025-03-16 19:04:47,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:47,545 INFO L225 Difference]: With dead ends: 1180 [2025-03-16 19:04:47,545 INFO L226 Difference]: Without dead ends: 637 [2025-03-16 19:04:47,546 INFO L434 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 [2025-03-16 19:04:47,547 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 49 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:47,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 624 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:04:47,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2025-03-16 19:04:47,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 637. [2025-03-16 19:04:47,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 487 states have (on average 1.4661190965092403) internal successors, (714), 490 states have internal predecessors, (714), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2025-03-16 19:04:47,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 948 transitions. [2025-03-16 19:04:47,575 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 948 transitions. Word has length 52 [2025-03-16 19:04:47,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:47,575 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 948 transitions. [2025-03-16 19:04:47,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-16 19:04:47,576 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 948 transitions. [2025-03-16 19:04:47,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-16 19:04:47,576 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:47,576 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:47,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 19:04:47,576 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:47,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:47,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1034777499, now seen corresponding path program 1 times [2025-03-16 19:04:47,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:47,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514438103] [2025-03-16 19:04:47,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:47,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:47,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-16 19:04:47,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-16 19:04:47,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:47,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:47,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 19:04:47,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:47,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514438103] [2025-03-16 19:04:47,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514438103] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:47,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:47,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:04:47,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889100380] [2025-03-16 19:04:47,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:47,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:04:47,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:47,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:04:47,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:04:47,703 INFO L87 Difference]: Start difference. First operand 637 states and 948 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, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-16 19:04:47,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:47,746 INFO L93 Difference]: Finished difference Result 1200 states and 1807 transitions. [2025-03-16 19:04:47,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:04:47,746 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, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 53 [2025-03-16 19:04:47,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:47,750 INFO L225 Difference]: With dead ends: 1200 [2025-03-16 19:04:47,750 INFO L226 Difference]: Without dead ends: 657 [2025-03-16 19:04:47,752 INFO L434 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 [2025-03-16 19:04:47,752 INFO L435 NwaCegarLoop]: 241 mSDtfsCounter, 4 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:47,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 719 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:04:47,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2025-03-16 19:04:47,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2025-03-16 19:04:47,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 503 states have (on average 1.4512922465208749) internal successors, (730), 506 states have internal predecessors, (730), 117 states have call successors, (117), 36 states have call predecessors, (117), 36 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2025-03-16 19:04:47,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 964 transitions. [2025-03-16 19:04:47,785 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 964 transitions. Word has length 53 [2025-03-16 19:04:47,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:47,786 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 964 transitions. [2025-03-16 19:04:47,786 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, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-16 19:04:47,786 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 964 transitions. [2025-03-16 19:04:47,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-16 19:04:47,787 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:47,787 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:47,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 19:04:47,787 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:47,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:47,787 INFO L85 PathProgramCache]: Analyzing trace with hash -910736089, now seen corresponding path program 1 times [2025-03-16 19:04:47,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:47,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305506303] [2025-03-16 19:04:47,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:47,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:47,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-16 19:04:47,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-16 19:04:47,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:47,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 19:04:47,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:47,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305506303] [2025-03-16 19:04:47,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305506303] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:47,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:47,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:04:47,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237047516] [2025-03-16 19:04:47,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:47,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:04:47,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:47,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:04:47,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:04:47,921 INFO L87 Difference]: Start difference. First operand 657 states and 964 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-16 19:04:47,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:47,976 INFO L93 Difference]: Finished difference Result 1240 states and 1851 transitions. [2025-03-16 19:04:47,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:04:47,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2025-03-16 19:04:47,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:47,981 INFO L225 Difference]: With dead ends: 1240 [2025-03-16 19:04:47,981 INFO L226 Difference]: Without dead ends: 677 [2025-03-16 19:04:47,982 INFO L434 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 [2025-03-16 19:04:47,983 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 4 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:47,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 705 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:04:47,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2025-03-16 19:04:48,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 677. [2025-03-16 19:04:48,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 519 states have (on average 1.4373795761078998) internal successors, (746), 522 states have internal predecessors, (746), 117 states have call successors, (117), 40 states have call predecessors, (117), 40 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2025-03-16 19:04:48,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 980 transitions. [2025-03-16 19:04:48,019 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 980 transitions. Word has length 61 [2025-03-16 19:04:48,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:48,020 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 980 transitions. [2025-03-16 19:04:48,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-16 19:04:48,020 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 980 transitions. [2025-03-16 19:04:48,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-16 19:04:48,021 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:48,021 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:48,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 19:04:48,021 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:48,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:48,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1028967981, now seen corresponding path program 1 times [2025-03-16 19:04:48,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:48,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432560404] [2025-03-16 19:04:48,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:48,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:48,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-16 19:04:48,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-16 19:04:48,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:48,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:48,133 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 19:04:48,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:48,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432560404] [2025-03-16 19:04:48,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432560404] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:48,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:48,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:04:48,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433686380] [2025-03-16 19:04:48,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:48,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:04:48,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:48,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:04:48,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:04:48,135 INFO L87 Difference]: Start difference. First operand 677 states and 980 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 19:04:48,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:48,188 INFO L93 Difference]: Finished difference Result 1276 states and 1867 transitions. [2025-03-16 19:04:48,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:04:48,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 69 [2025-03-16 19:04:48,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:48,193 INFO L225 Difference]: With dead ends: 1276 [2025-03-16 19:04:48,193 INFO L226 Difference]: Without dead ends: 693 [2025-03-16 19:04:48,195 INFO L434 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 [2025-03-16 19:04:48,196 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 3 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:48,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 715 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:04:48,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2025-03-16 19:04:48,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2025-03-16 19:04:48,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 531 states have (on average 1.4274952919020716) internal successors, (758), 534 states have internal predecessors, (758), 117 states have call successors, (117), 44 states have call predecessors, (117), 44 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2025-03-16 19:04:48,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 992 transitions. [2025-03-16 19:04:48,227 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 992 transitions. Word has length 69 [2025-03-16 19:04:48,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:48,227 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 992 transitions. [2025-03-16 19:04:48,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 19:04:48,228 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 992 transitions. [2025-03-16 19:04:48,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-16 19:04:48,229 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:48,229 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:48,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 19:04:48,229 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:48,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:48,230 INFO L85 PathProgramCache]: Analyzing trace with hash 397039718, now seen corresponding path program 1 times [2025-03-16 19:04:48,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:48,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937490429] [2025-03-16 19:04:48,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:48,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:48,240 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-16 19:04:48,250 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-16 19:04:48,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:48,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:48,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 19:04:48,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:48,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937490429] [2025-03-16 19:04:48,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937490429] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:48,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:48,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:04:48,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042232548] [2025-03-16 19:04:48,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:48,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:04:48,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:48,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:04:48,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:04:48,353 INFO L87 Difference]: Start difference. First operand 693 states and 992 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 19:04:48,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:48,407 INFO L93 Difference]: Finished difference Result 1312 states and 1907 transitions. [2025-03-16 19:04:48,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:04:48,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 69 [2025-03-16 19:04:48,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:48,411 INFO L225 Difference]: With dead ends: 1312 [2025-03-16 19:04:48,412 INFO L226 Difference]: Without dead ends: 713 [2025-03-16 19:04:48,413 INFO L434 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 [2025-03-16 19:04:48,413 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 4 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:48,413 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 705 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:04:48,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2025-03-16 19:04:48,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2025-03-16 19:04:48,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 547 states have (on average 1.4149908592321756) internal successors, (774), 550 states have internal predecessors, (774), 117 states have call successors, (117), 48 states have call predecessors, (117), 48 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2025-03-16 19:04:48,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1008 transitions. [2025-03-16 19:04:48,442 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1008 transitions. Word has length 69 [2025-03-16 19:04:48,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:48,443 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 1008 transitions. [2025-03-16 19:04:48,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 19:04:48,443 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1008 transitions. [2025-03-16 19:04:48,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-16 19:04:48,444 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:48,444 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:48,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 19:04:48,444 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:48,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:48,444 INFO L85 PathProgramCache]: Analyzing trace with hash 986429448, now seen corresponding path program 1 times [2025-03-16 19:04:48,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:48,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301406071] [2025-03-16 19:04:48,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:48,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:48,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-16 19:04:48,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-16 19:04:48,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:48,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 19:04:48,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:48,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301406071] [2025-03-16 19:04:48,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301406071] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:48,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:48,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:04:48,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339606789] [2025-03-16 19:04:48,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:48,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:04:48,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:48,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:04:48,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:04:48,578 INFO L87 Difference]: Start difference. First operand 713 states and 1008 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, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 19:04:48,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:48,646 INFO L93 Difference]: Finished difference Result 1356 states and 1935 transitions. [2025-03-16 19:04:48,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:04:48,646 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, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 77 [2025-03-16 19:04:48,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:48,650 INFO L225 Difference]: With dead ends: 1356 [2025-03-16 19:04:48,650 INFO L226 Difference]: Without dead ends: 737 [2025-03-16 19:04:48,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:04:48,651 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 5 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:48,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 717 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:04:48,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2025-03-16 19:04:48,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 737. [2025-03-16 19:04:48,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 567 states have (on average 1.400352733686067) internal successors, (794), 570 states have internal predecessors, (794), 117 states have call successors, (117), 52 states have call predecessors, (117), 52 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2025-03-16 19:04:48,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1028 transitions. [2025-03-16 19:04:48,681 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1028 transitions. Word has length 77 [2025-03-16 19:04:48,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:48,681 INFO L471 AbstractCegarLoop]: Abstraction has 737 states and 1028 transitions. [2025-03-16 19:04:48,681 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, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 19:04:48,681 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1028 transitions. [2025-03-16 19:04:48,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-03-16 19:04:48,682 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:48,683 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:48,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 19:04:48,683 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:48,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:48,683 INFO L85 PathProgramCache]: Analyzing trace with hash 323358893, now seen corresponding path program 1 times [2025-03-16 19:04:48,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:48,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653538096] [2025-03-16 19:04:48,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:48,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:48,691 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-16 19:04:48,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-16 19:04:48,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:48,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:49,103 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-16 19:04:49,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:49,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653538096] [2025-03-16 19:04:49,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653538096] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:49,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:49,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 19:04:49,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021906797] [2025-03-16 19:04:49,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:49,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:04:49,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:49,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:04:49,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:04:49,106 INFO L87 Difference]: Start difference. First operand 737 states and 1028 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 19:04:49,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:49,362 INFO L93 Difference]: Finished difference Result 1938 states and 2686 transitions. [2025-03-16 19:04:49,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 19:04:49,362 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 80 [2025-03-16 19:04:49,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:49,369 INFO L225 Difference]: With dead ends: 1938 [2025-03-16 19:04:49,369 INFO L226 Difference]: Without dead ends: 1295 [2025-03-16 19:04:49,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-16 19:04:49,371 INFO L435 NwaCegarLoop]: 245 mSDtfsCounter, 185 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:49,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 1379 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:04:49,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2025-03-16 19:04:49,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 882. [2025-03-16 19:04:49,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 675 states have (on average 1.3911111111111112) internal successors, (939), 679 states have internal predecessors, (939), 141 states have call successors, (141), 65 states have call predecessors, (141), 65 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2025-03-16 19:04:49,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1221 transitions. [2025-03-16 19:04:49,437 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1221 transitions. Word has length 80 [2025-03-16 19:04:49,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:49,437 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1221 transitions. [2025-03-16 19:04:49,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 19:04:49,438 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1221 transitions. [2025-03-16 19:04:49,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-03-16 19:04:49,438 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:49,439 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:49,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 19:04:49,439 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:49,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:49,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1956098321, now seen corresponding path program 1 times [2025-03-16 19:04:49,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:49,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024005792] [2025-03-16 19:04:49,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:49,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:49,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-03-16 19:04:49,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-03-16 19:04:49,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:49,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:49,542 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-16 19:04:49,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:49,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024005792] [2025-03-16 19:04:49,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024005792] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:49,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:49,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:04:49,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671979150] [2025-03-16 19:04:49,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:49,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:04:49,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:49,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:04:49,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:04:49,543 INFO L87 Difference]: Start difference. First operand 882 states and 1221 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2025-03-16 19:04:49,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:49,601 INFO L93 Difference]: Finished difference Result 1653 states and 2307 transitions. [2025-03-16 19:04:49,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:04:49,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 84 [2025-03-16 19:04:49,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:49,606 INFO L225 Difference]: With dead ends: 1653 [2025-03-16 19:04:49,606 INFO L226 Difference]: Without dead ends: 902 [2025-03-16 19:04:49,608 INFO L434 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 [2025-03-16 19:04:49,609 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 3 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:49,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 715 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:04:49,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2025-03-16 19:04:49,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 902. [2025-03-16 19:04:49,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 690 states have (on average 1.382608695652174) internal successors, (954), 694 states have internal predecessors, (954), 141 states have call successors, (141), 70 states have call predecessors, (141), 70 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2025-03-16 19:04:49,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1236 transitions. [2025-03-16 19:04:49,671 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1236 transitions. Word has length 84 [2025-03-16 19:04:49,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:49,672 INFO L471 AbstractCegarLoop]: Abstraction has 902 states and 1236 transitions. [2025-03-16 19:04:49,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2025-03-16 19:04:49,672 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1236 transitions. [2025-03-16 19:04:49,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-16 19:04:49,673 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:49,673 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:49,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-16 19:04:49,673 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:49,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:49,674 INFO L85 PathProgramCache]: Analyzing trace with hash 810651180, now seen corresponding path program 1 times [2025-03-16 19:04:49,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:49,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664295886] [2025-03-16 19:04:49,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:49,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:49,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-16 19:04:49,694 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-16 19:04:49,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:49,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 19:04:49,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:49,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664295886] [2025-03-16 19:04:49,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664295886] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:04:49,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688519677] [2025-03-16 19:04:49,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:49,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:04:49,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:04:49,895 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) [2025-03-16 19:04:49,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 19:04:49,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-16 19:04:50,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-16 19:04:50,011 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:50,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:50,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-16 19:04:50,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:04:50,108 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 19:04:50,108 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:04:50,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688519677] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:50,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:04:50,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2025-03-16 19:04:50,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687468447] [2025-03-16 19:04:50,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:50,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 19:04:50,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:50,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 19:04:50,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2025-03-16 19:04:50,110 INFO L87 Difference]: Start difference. First operand 902 states and 1236 transitions. Second operand has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2025-03-16 19:04:50,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:50,288 INFO L93 Difference]: Finished difference Result 2028 states and 2897 transitions. [2025-03-16 19:04:50,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 19:04:50,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 83 [2025-03-16 19:04:50,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:50,296 INFO L225 Difference]: With dead ends: 2028 [2025-03-16 19:04:50,296 INFO L226 Difference]: Without dead ends: 1297 [2025-03-16 19:04:50,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2025-03-16 19:04:50,300 INFO L435 NwaCegarLoop]: 412 mSDtfsCounter, 133 mSDsluCounter, 2280 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:50,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 2692 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:04:50,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2025-03-16 19:04:50,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 904. [2025-03-16 19:04:50,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 690 states have (on average 1.3753623188405797) internal successors, (949), 695 states have internal predecessors, (949), 142 states have call successors, (142), 71 states have call predecessors, (142), 71 states have return successors, (142), 137 states have call predecessors, (142), 142 states have call successors, (142) [2025-03-16 19:04:50,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1233 transitions. [2025-03-16 19:04:50,399 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1233 transitions. Word has length 83 [2025-03-16 19:04:50,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:50,399 INFO L471 AbstractCegarLoop]: Abstraction has 904 states and 1233 transitions. [2025-03-16 19:04:50,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2025-03-16 19:04:50,400 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1233 transitions. [2025-03-16 19:04:50,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-16 19:04:50,401 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:50,401 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:50,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-16 19:04:50,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-16 19:04:50,602 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:50,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:50,603 INFO L85 PathProgramCache]: Analyzing trace with hash 483588385, now seen corresponding path program 1 times [2025-03-16 19:04:50,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:50,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819721309] [2025-03-16 19:04:50,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:50,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:50,612 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-16 19:04:50,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-16 19:04:50,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:50,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:50,714 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 19:04:50,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:50,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819721309] [2025-03-16 19:04:50,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819721309] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:50,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:50,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 19:04:50,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987928217] [2025-03-16 19:04:50,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:50,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:04:50,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:50,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:04:50,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:04:50,715 INFO L87 Difference]: Start difference. First operand 904 states and 1233 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 19:04:50,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:50,860 INFO L93 Difference]: Finished difference Result 1690 states and 2322 transitions. [2025-03-16 19:04:50,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:04:50,860 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 86 [2025-03-16 19:04:50,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:50,865 INFO L225 Difference]: With dead ends: 1690 [2025-03-16 19:04:50,865 INFO L226 Difference]: Without dead ends: 958 [2025-03-16 19:04:50,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-03-16 19:04:50,868 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 226 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:50,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 1398 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:04:50,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2025-03-16 19:04:50,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 916. [2025-03-16 19:04:50,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 707 states have (on average 1.3748231966053748) internal successors, (972), 716 states have internal predecessors, (972), 136 states have call successors, (136), 72 states have call predecessors, (136), 72 states have return successors, (136), 127 states have call predecessors, (136), 136 states have call successors, (136) [2025-03-16 19:04:50,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1244 transitions. [2025-03-16 19:04:50,925 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1244 transitions. Word has length 86 [2025-03-16 19:04:50,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:50,925 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1244 transitions. [2025-03-16 19:04:50,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 19:04:50,926 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1244 transitions. [2025-03-16 19:04:50,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-16 19:04:50,928 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:50,928 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:50,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-16 19:04:50,928 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:50,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:50,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1842882774, now seen corresponding path program 1 times [2025-03-16 19:04:50,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:50,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404524975] [2025-03-16 19:04:50,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:50,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:50,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-16 19:04:51,007 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-16 19:04:51,007 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:51,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:51,376 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 19:04:51,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:51,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404524975] [2025-03-16 19:04:51,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404524975] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:51,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:51,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 19:04:51,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802048919] [2025-03-16 19:04:51,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:51,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:04:51,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:51,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:04:51,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:04:51,377 INFO L87 Difference]: Start difference. First operand 916 states and 1244 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 19:04:51,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:51,545 INFO L93 Difference]: Finished difference Result 1669 states and 2278 transitions. [2025-03-16 19:04:51,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 19:04:51,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 88 [2025-03-16 19:04:51,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:51,553 INFO L225 Difference]: With dead ends: 1669 [2025-03-16 19:04:51,553 INFO L226 Difference]: Without dead ends: 915 [2025-03-16 19:04:51,555 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-16 19:04:51,555 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 128 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:51,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1460 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:04:51,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2025-03-16 19:04:51,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 905. [2025-03-16 19:04:51,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 699 states have (on average 1.3733905579399142) internal successors, (960), 708 states have internal predecessors, (960), 134 states have call successors, (134), 71 states have call predecessors, (134), 71 states have return successors, (134), 125 states have call predecessors, (134), 134 states have call successors, (134) [2025-03-16 19:04:51,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1228 transitions. [2025-03-16 19:04:51,606 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1228 transitions. Word has length 88 [2025-03-16 19:04:51,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:51,607 INFO L471 AbstractCegarLoop]: Abstraction has 905 states and 1228 transitions. [2025-03-16 19:04:51,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 19:04:51,607 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1228 transitions. [2025-03-16 19:04:51,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-16 19:04:51,608 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:51,608 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:51,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-16 19:04:51,608 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:51,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:51,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1617843378, now seen corresponding path program 1 times [2025-03-16 19:04:51,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:51,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862640700] [2025-03-16 19:04:51,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:51,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:51,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-16 19:04:51,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-16 19:04:51,659 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:51,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:52,035 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 19:04:52,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:52,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862640700] [2025-03-16 19:04:52,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862640700] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:52,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:52,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-16 19:04:52,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514833005] [2025-03-16 19:04:52,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:52,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 19:04:52,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:52,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 19:04:52,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 19:04:52,036 INFO L87 Difference]: Start difference. First operand 905 states and 1228 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 19:04:52,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:52,398 INFO L93 Difference]: Finished difference Result 1764 states and 2386 transitions. [2025-03-16 19:04:52,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 19:04:52,399 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 89 [2025-03-16 19:04:52,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:52,404 INFO L225 Difference]: With dead ends: 1764 [2025-03-16 19:04:52,404 INFO L226 Difference]: Without dead ends: 1000 [2025-03-16 19:04:52,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2025-03-16 19:04:52,406 INFO L435 NwaCegarLoop]: 279 mSDtfsCounter, 406 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:52,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 1473 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:04:52,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2025-03-16 19:04:52,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 943. [2025-03-16 19:04:52,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 722 states have (on average 1.3490304709141274) internal successors, (974), 732 states have internal predecessors, (974), 143 states have call successors, (143), 77 states have call predecessors, (143), 77 states have return successors, (143), 133 states have call predecessors, (143), 143 states have call successors, (143) [2025-03-16 19:04:52,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1260 transitions. [2025-03-16 19:04:52,494 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1260 transitions. Word has length 89 [2025-03-16 19:04:52,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:52,494 INFO L471 AbstractCegarLoop]: Abstraction has 943 states and 1260 transitions. [2025-03-16 19:04:52,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 19:04:52,494 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1260 transitions. [2025-03-16 19:04:52,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 19:04:52,495 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:52,495 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:52,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-16 19:04:52,495 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:52,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:52,496 INFO L85 PathProgramCache]: Analyzing trace with hash 191712812, now seen corresponding path program 1 times [2025-03-16 19:04:52,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:52,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755173356] [2025-03-16 19:04:52,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:52,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:52,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 19:04:52,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 19:04:52,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:52,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:52,866 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 19:04:52,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:52,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755173356] [2025-03-16 19:04:52,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755173356] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:52,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:52,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-16 19:04:52,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149637784] [2025-03-16 19:04:52,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:52,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 19:04:52,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:52,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 19:04:52,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 19:04:52,868 INFO L87 Difference]: Start difference. First operand 943 states and 1260 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2025-03-16 19:04:53,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:53,235 INFO L93 Difference]: Finished difference Result 1833 states and 2432 transitions. [2025-03-16 19:04:53,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 19:04:53,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2025-03-16 19:04:53,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:53,241 INFO L225 Difference]: With dead ends: 1833 [2025-03-16 19:04:53,241 INFO L226 Difference]: Without dead ends: 1044 [2025-03-16 19:04:53,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2025-03-16 19:04:53,245 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 396 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:53,245 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 1335 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:04:53,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2025-03-16 19:04:53,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 965. [2025-03-16 19:04:53,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 736 states have (on average 1.3315217391304348) internal successors, (980), 747 states have internal predecessors, (980), 146 states have call successors, (146), 82 states have call predecessors, (146), 82 states have return successors, (146), 135 states have call predecessors, (146), 146 states have call successors, (146) [2025-03-16 19:04:53,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1272 transitions. [2025-03-16 19:04:53,312 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1272 transitions. Word has length 91 [2025-03-16 19:04:53,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:53,312 INFO L471 AbstractCegarLoop]: Abstraction has 965 states and 1272 transitions. [2025-03-16 19:04:53,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2025-03-16 19:04:53,312 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1272 transitions. [2025-03-16 19:04:53,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 19:04:53,314 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:53,314 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:53,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-16 19:04:53,314 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:53,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:53,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1455522294, now seen corresponding path program 1 times [2025-03-16 19:04:53,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:53,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211208868] [2025-03-16 19:04:53,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:53,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:53,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 19:04:53,333 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 19:04:53,333 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:53,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:53,382 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 19:04:53,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:53,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211208868] [2025-03-16 19:04:53,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211208868] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:53,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:53,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:04:53,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203060255] [2025-03-16 19:04:53,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:53,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:04:53,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:53,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:04:53,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:04:53,384 INFO L87 Difference]: Start difference. First operand 965 states and 1272 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 19:04:53,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:53,517 INFO L93 Difference]: Finished difference Result 2539 states and 3364 transitions. [2025-03-16 19:04:53,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:04:53,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 92 [2025-03-16 19:04:53,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:53,526 INFO L225 Difference]: With dead ends: 2539 [2025-03-16 19:04:53,526 INFO L226 Difference]: Without dead ends: 1806 [2025-03-16 19:04:53,528 INFO L434 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 [2025-03-16 19:04:53,529 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 187 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:53,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 1072 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:04:53,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2025-03-16 19:04:53,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1515. [2025-03-16 19:04:53,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1145 states have (on average 1.3310043668122271) internal successors, (1524), 1162 states have internal predecessors, (1524), 239 states have call successors, (239), 130 states have call predecessors, (239), 130 states have return successors, (239), 222 states have call predecessors, (239), 239 states have call successors, (239) [2025-03-16 19:04:53,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 2002 transitions. [2025-03-16 19:04:53,646 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 2002 transitions. Word has length 92 [2025-03-16 19:04:53,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:53,647 INFO L471 AbstractCegarLoop]: Abstraction has 1515 states and 2002 transitions. [2025-03-16 19:04:53,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 19:04:53,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 2002 transitions. [2025-03-16 19:04:53,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-16 19:04:53,648 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:53,648 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:53,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-16 19:04:53,648 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:53,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:53,649 INFO L85 PathProgramCache]: Analyzing trace with hash 388715663, now seen corresponding path program 1 times [2025-03-16 19:04:53,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:53,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305714774] [2025-03-16 19:04:53,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:53,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:53,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-16 19:04:53,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-16 19:04:53,669 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:53,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:53,720 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 19:04:53,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:53,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305714774] [2025-03-16 19:04:53,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305714774] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:53,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:53,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:04:53,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459149892] [2025-03-16 19:04:53,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:53,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:04:53,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:53,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:04:53,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:04:53,722 INFO L87 Difference]: Start difference. First operand 1515 states and 2002 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 19:04:53,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:53,888 INFO L93 Difference]: Finished difference Result 3793 states and 5038 transitions. [2025-03-16 19:04:53,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:04:53,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2025-03-16 19:04:53,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:53,900 INFO L225 Difference]: With dead ends: 3793 [2025-03-16 19:04:53,900 INFO L226 Difference]: Without dead ends: 2575 [2025-03-16 19:04:53,904 INFO L434 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 [2025-03-16 19:04:53,906 INFO L435 NwaCegarLoop]: 444 mSDtfsCounter, 194 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:53,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1110 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:04:53,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2025-03-16 19:04:54,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 2394. [2025-03-16 19:04:54,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2394 states, 1787 states have (on average 1.3172915500839395) internal successors, (2354), 1814 states have internal predecessors, (2354), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2025-03-16 19:04:54,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2394 states to 2394 states and 3142 transitions. [2025-03-16 19:04:54,116 INFO L78 Accepts]: Start accepts. Automaton has 2394 states and 3142 transitions. Word has length 94 [2025-03-16 19:04:54,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:54,116 INFO L471 AbstractCegarLoop]: Abstraction has 2394 states and 3142 transitions. [2025-03-16 19:04:54,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 19:04:54,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2394 states and 3142 transitions. [2025-03-16 19:04:54,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-16 19:04:54,119 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:54,119 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:54,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-16 19:04:54,119 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:54,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:54,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1372055367, now seen corresponding path program 1 times [2025-03-16 19:04:54,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:54,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204138930] [2025-03-16 19:04:54,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:54,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:54,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-16 19:04:54,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-16 19:04:54,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:54,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:54,200 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 19:04:54,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:54,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204138930] [2025-03-16 19:04:54,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204138930] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:54,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:54,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:04:54,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393661464] [2025-03-16 19:04:54,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:54,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:04:54,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:54,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:04:54,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:04:54,201 INFO L87 Difference]: Start difference. First operand 2394 states and 3142 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 19:04:54,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:54,445 INFO L93 Difference]: Finished difference Result 5705 states and 7516 transitions. [2025-03-16 19:04:54,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:04:54,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2025-03-16 19:04:54,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:54,462 INFO L225 Difference]: With dead ends: 5705 [2025-03-16 19:04:54,462 INFO L226 Difference]: Without dead ends: 3724 [2025-03-16 19:04:54,466 INFO L434 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 [2025-03-16 19:04:54,466 INFO L435 NwaCegarLoop]: 455 mSDtfsCounter, 188 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:54,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1124 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:04:54,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3724 states. [2025-03-16 19:04:54,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3724 to 3299. [2025-03-16 19:04:54,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 2453 states have (on average 1.3122706889523033) internal successors, (3219), 2490 states have internal predecessors, (3219), 551 states have call successors, (551), 294 states have call predecessors, (551), 294 states have return successors, (551), 514 states have call predecessors, (551), 551 states have call successors, (551) [2025-03-16 19:04:54,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 4321 transitions. [2025-03-16 19:04:54,680 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 4321 transitions. Word has length 94 [2025-03-16 19:04:54,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:54,680 INFO L471 AbstractCegarLoop]: Abstraction has 3299 states and 4321 transitions. [2025-03-16 19:04:54,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 19:04:54,680 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 4321 transitions. [2025-03-16 19:04:54,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-16 19:04:54,682 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:54,682 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:54,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-16 19:04:54,683 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:54,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:54,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1364557219, now seen corresponding path program 1 times [2025-03-16 19:04:54,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:54,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753776932] [2025-03-16 19:04:54,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:54,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:54,697 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-16 19:04:54,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-16 19:04:54,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:54,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:54,727 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 19:04:54,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:54,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753776932] [2025-03-16 19:04:54,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753776932] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:54,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:54,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:04:54,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516084053] [2025-03-16 19:04:54,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:54,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:04:54,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:54,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:04:54,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:04:54,728 INFO L87 Difference]: Start difference. First operand 3299 states and 4321 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 19:04:54,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:54,942 INFO L93 Difference]: Finished difference Result 6287 states and 8268 transitions. [2025-03-16 19:04:54,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:04:54,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2025-03-16 19:04:54,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:54,958 INFO L225 Difference]: With dead ends: 6287 [2025-03-16 19:04:54,958 INFO L226 Difference]: Without dead ends: 3308 [2025-03-16 19:04:54,965 INFO L434 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 [2025-03-16 19:04:54,966 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 3 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:54,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 453 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:04:54,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3308 states. [2025-03-16 19:04:55,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3308 to 3302. [2025-03-16 19:04:55,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3302 states, 2456 states have (on average 1.3118892508143323) internal successors, (3222), 2493 states have internal predecessors, (3222), 551 states have call successors, (551), 294 states have call predecessors, (551), 294 states have return successors, (551), 514 states have call predecessors, (551), 551 states have call successors, (551) [2025-03-16 19:04:55,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3302 states to 3302 states and 4324 transitions. [2025-03-16 19:04:55,161 INFO L78 Accepts]: Start accepts. Automaton has 3302 states and 4324 transitions. Word has length 94 [2025-03-16 19:04:55,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:55,162 INFO L471 AbstractCegarLoop]: Abstraction has 3302 states and 4324 transitions. [2025-03-16 19:04:55,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 19:04:55,162 INFO L276 IsEmpty]: Start isEmpty. Operand 3302 states and 4324 transitions. [2025-03-16 19:04:55,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-16 19:04:55,164 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:55,164 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:55,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-16 19:04:55,164 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:55,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:55,165 INFO L85 PathProgramCache]: Analyzing trace with hash 259451288, now seen corresponding path program 1 times [2025-03-16 19:04:55,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:55,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701335568] [2025-03-16 19:04:55,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:55,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:55,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-16 19:04:55,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-16 19:04:55,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:55,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:55,264 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 19:04:55,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:55,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701335568] [2025-03-16 19:04:55,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701335568] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:55,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:55,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:04:55,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262695237] [2025-03-16 19:04:55,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:55,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:04:55,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:55,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:04:55,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:04:55,266 INFO L87 Difference]: Start difference. First operand 3302 states and 4324 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 19:04:55,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:55,424 INFO L93 Difference]: Finished difference Result 6278 states and 8238 transitions. [2025-03-16 19:04:55,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:04:55,424 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), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 95 [2025-03-16 19:04:55,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:55,438 INFO L225 Difference]: With dead ends: 6278 [2025-03-16 19:04:55,439 INFO L226 Difference]: Without dead ends: 3038 [2025-03-16 19:04:55,447 INFO L434 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 [2025-03-16 19:04:55,447 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 69 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:55,448 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 705 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:04:55,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2025-03-16 19:04:55,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 2939. [2025-03-16 19:04:55,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 2170 states have (on average 1.3147465437788017) internal successors, (2853), 2194 states have internal predecessors, (2853), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2025-03-16 19:04:55,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 3857 transitions. [2025-03-16 19:04:55,695 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 3857 transitions. Word has length 95 [2025-03-16 19:04:55,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:55,696 INFO L471 AbstractCegarLoop]: Abstraction has 2939 states and 3857 transitions. [2025-03-16 19:04:55,696 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), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 19:04:55,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 3857 transitions. [2025-03-16 19:04:55,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-16 19:04:55,698 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:55,698 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:55,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-16 19:04:55,698 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:55,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:55,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1800917970, now seen corresponding path program 1 times [2025-03-16 19:04:55,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:55,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139990199] [2025-03-16 19:04:55,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:55,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:55,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-16 19:04:55,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-16 19:04:55,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:55,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:55,812 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 19:04:55,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:55,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139990199] [2025-03-16 19:04:55,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139990199] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:04:55,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:04:55,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:04:55,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081859792] [2025-03-16 19:04:55,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:04:55,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:04:55,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:55,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:04:55,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:04:55,813 INFO L87 Difference]: Start difference. First operand 2939 states and 3857 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 19:04:56,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:04:56,014 INFO L93 Difference]: Finished difference Result 5688 states and 7484 transitions. [2025-03-16 19:04:56,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:04:56,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2025-03-16 19:04:56,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:04:56,029 INFO L225 Difference]: With dead ends: 5688 [2025-03-16 19:04:56,029 INFO L226 Difference]: Without dead ends: 2858 [2025-03-16 19:04:56,036 INFO L434 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 [2025-03-16 19:04:56,037 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 56 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:04:56,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 698 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:04:56,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2025-03-16 19:04:56,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 2704. [2025-03-16 19:04:56,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2704 states, 1994 states have (on average 1.3134403209628887) internal successors, (2619), 2013 states have internal predecessors, (2619), 464 states have call successors, (464), 245 states have call predecessors, (464), 245 states have return successors, (464), 445 states have call predecessors, (464), 464 states have call successors, (464) [2025-03-16 19:04:56,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2704 states to 2704 states and 3547 transitions. [2025-03-16 19:04:56,214 INFO L78 Accepts]: Start accepts. Automaton has 2704 states and 3547 transitions. Word has length 97 [2025-03-16 19:04:56,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:04:56,214 INFO L471 AbstractCegarLoop]: Abstraction has 2704 states and 3547 transitions. [2025-03-16 19:04:56,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 19:04:56,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2704 states and 3547 transitions. [2025-03-16 19:04:56,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:04:56,218 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:04:56,219 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:04:56,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-16 19:04:56,219 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:04:56,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:04:56,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1896237621, now seen corresponding path program 1 times [2025-03-16 19:04:56,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:04:56,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536775293] [2025-03-16 19:04:56,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:56,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:04:56,231 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:04:56,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:04:56,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:56,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:56,449 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2025-03-16 19:04:56,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:04:56,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536775293] [2025-03-16 19:04:56,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536775293] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:04:56,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864543720] [2025-03-16 19:04:56,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:04:56,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:04:56,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:04:56,451 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) [2025-03-16 19:04:56,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 19:04:56,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:04:56,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:04:56,608 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:04:56,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:04:56,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-16 19:04:56,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:04:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 27 proven. 42 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 19:04:56,836 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:04:57,110 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2025-03-16 19:04:57,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864543720] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 19:04:57,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 19:04:57,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 8] total 22 [2025-03-16 19:04:57,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84011405] [2025-03-16 19:04:57,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 19:04:57,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-16 19:04:57,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:04:57,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-16 19:04:57,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2025-03-16 19:04:57,113 INFO L87 Difference]: Start difference. First operand 2704 states and 3547 transitions. Second operand has 22 states, 22 states have (on average 10.181818181818182) internal successors, (224), 20 states have internal predecessors, (224), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) [2025-03-16 19:05:00,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:05:00,718 INFO L93 Difference]: Finished difference Result 11132 states and 14537 transitions. [2025-03-16 19:05:00,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-03-16 19:05:00,719 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 10.181818181818182) internal successors, (224), 20 states have internal predecessors, (224), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) Word has length 141 [2025-03-16 19:05:00,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:05:00,756 INFO L225 Difference]: With dead ends: 11132 [2025-03-16 19:05:00,756 INFO L226 Difference]: Without dead ends: 8691 [2025-03-16 19:05:00,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1844 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1180, Invalid=5300, Unknown=0, NotChecked=0, Total=6480 [2025-03-16 19:05:00,767 INFO L435 NwaCegarLoop]: 326 mSDtfsCounter, 5728 mSDsluCounter, 3223 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 2243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5728 SdHoareTripleChecker+Valid, 3549 SdHoareTripleChecker+Invalid, 3849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2243 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-16 19:05:00,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5728 Valid, 3549 Invalid, 3849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2243 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-16 19:05:00,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8691 states. [2025-03-16 19:05:01,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8691 to 7243. [2025-03-16 19:05:01,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7243 states, 5326 states have (on average 1.3051070221554637) internal successors, (6951), 5378 states have internal predecessors, (6951), 1239 states have call successors, (1239), 677 states have call predecessors, (1239), 677 states have return successors, (1239), 1187 states have call predecessors, (1239), 1239 states have call successors, (1239) [2025-03-16 19:05:01,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7243 states to 7243 states and 9429 transitions. [2025-03-16 19:05:01,256 INFO L78 Accepts]: Start accepts. Automaton has 7243 states and 9429 transitions. Word has length 141 [2025-03-16 19:05:01,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:05:01,257 INFO L471 AbstractCegarLoop]: Abstraction has 7243 states and 9429 transitions. [2025-03-16 19:05:01,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.181818181818182) internal successors, (224), 20 states have internal predecessors, (224), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) [2025-03-16 19:05:01,257 INFO L276 IsEmpty]: Start isEmpty. Operand 7243 states and 9429 transitions. [2025-03-16 19:05:01,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-16 19:05:01,266 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:05:01,267 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:05:01,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-16 19:05:01,467 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,SelfDestructingSolverStorable26 [2025-03-16 19:05:01,468 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:05:01,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:05:01,468 INFO L85 PathProgramCache]: Analyzing trace with hash 928768647, now seen corresponding path program 1 times [2025-03-16 19:05:01,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:05:01,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949059681] [2025-03-16 19:05:01,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:05:01,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:05:01,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-16 19:05:01,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-16 19:05:01,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:05:01,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:05:02,138 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-16 19:05:02,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:05:02,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949059681] [2025-03-16 19:05:02,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949059681] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:05:02,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570323778] [2025-03-16 19:05:02,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:05:02,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:05:02,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:05:02,141 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) [2025-03-16 19:05:02,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 19:05:02,232 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-16 19:05:02,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-16 19:05:02,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:05:02,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:05:02,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-16 19:05:02,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:05:02,526 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 48 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 19:05:02,526 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:05:02,722 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2025-03-16 19:05:02,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570323778] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-16 19:05:02,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-16 19:05:02,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 11] total 24 [2025-03-16 19:05:02,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532232201] [2025-03-16 19:05:02,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:05:02,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 19:05:02,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:05:02,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 19:05:02,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2025-03-16 19:05:02,724 INFO L87 Difference]: Start difference. First operand 7243 states and 9429 transitions. Second operand has 9 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 19:05:03,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:05:03,259 INFO L93 Difference]: Finished difference Result 14081 states and 18375 transitions. [2025-03-16 19:05:03,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 19:05:03,260 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 144 [2025-03-16 19:05:03,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:05:03,293 INFO L225 Difference]: With dead ends: 14081 [2025-03-16 19:05:03,294 INFO L226 Difference]: Without dead ends: 7310 [2025-03-16 19:05:03,311 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2025-03-16 19:05:03,312 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 452 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:05:03,312 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1399 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:05:03,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7310 states. [2025-03-16 19:05:03,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7310 to 5835. [2025-03-16 19:05:03,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5835 states, 4312 states have (on average 1.3082096474953617) internal successors, (5641), 4350 states have internal predecessors, (5641), 981 states have call successors, (981), 541 states have call predecessors, (981), 541 states have return successors, (981), 943 states have call predecessors, (981), 981 states have call successors, (981) [2025-03-16 19:05:03,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5835 states to 5835 states and 7603 transitions. [2025-03-16 19:05:03,742 INFO L78 Accepts]: Start accepts. Automaton has 5835 states and 7603 transitions. Word has length 144 [2025-03-16 19:05:03,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:05:03,744 INFO L471 AbstractCegarLoop]: Abstraction has 5835 states and 7603 transitions. [2025-03-16 19:05:03,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 19:05:03,744 INFO L276 IsEmpty]: Start isEmpty. Operand 5835 states and 7603 transitions. [2025-03-16 19:05:03,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-03-16 19:05:03,751 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:05:03,751 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:05:03,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-16 19:05:03,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:05:03,952 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:05:03,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:05:03,953 INFO L85 PathProgramCache]: Analyzing trace with hash 634475000, now seen corresponding path program 1 times [2025-03-16 19:05:03,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:05:03,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824228753] [2025-03-16 19:05:03,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:05:03,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:05:03,966 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-16 19:05:04,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-16 19:05:04,005 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:05:04,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:05:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-16 19:05:04,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:05:04,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824228753] [2025-03-16 19:05:04,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824228753] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:05:04,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387232962] [2025-03-16 19:05:04,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:05:04,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:05:04,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:05:04,436 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) [2025-03-16 19:05:04,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 19:05:04,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-16 19:05:04,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-16 19:05:04,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:05:04,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:05:04,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-16 19:05:04,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:05:04,809 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 17 proven. 53 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 19:05:04,809 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:05:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2025-03-16 19:05:05,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387232962] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 19:05:05,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 19:05:05,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 9] total 23 [2025-03-16 19:05:05,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090573159] [2025-03-16 19:05:05,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 19:05:05,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-16 19:05:05,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:05:05,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-16 19:05:05,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2025-03-16 19:05:05,072 INFO L87 Difference]: Start difference. First operand 5835 states and 7603 transitions. Second operand has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 19 states have internal predecessors, (240), 7 states have call successors, (40), 5 states have call predecessors, (40), 9 states have return successors, (39), 11 states have call predecessors, (39), 7 states have call successors, (39) [2025-03-16 19:05:07,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:05:07,955 INFO L93 Difference]: Finished difference Result 15458 states and 20162 transitions. [2025-03-16 19:05:07,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-03-16 19:05:07,955 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 19 states have internal predecessors, (240), 7 states have call successors, (40), 5 states have call predecessors, (40), 9 states have return successors, (39), 11 states have call predecessors, (39), 7 states have call successors, (39) Word has length 145 [2025-03-16 19:05:07,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:05:07,995 INFO L225 Difference]: With dead ends: 15458 [2025-03-16 19:05:07,995 INFO L226 Difference]: Without dead ends: 9901 [2025-03-16 19:05:08,009 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=658, Invalid=3124, Unknown=0, NotChecked=0, Total=3782 [2025-03-16 19:05:08,011 INFO L435 NwaCegarLoop]: 516 mSDtfsCounter, 1492 mSDsluCounter, 6605 mSDsCounter, 0 mSdLazyCounter, 3214 mSolverCounterSat, 538 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 7121 SdHoareTripleChecker+Invalid, 3752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 3214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:05:08,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 7121 Invalid, 3752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [538 Valid, 3214 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-16 19:05:08,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9901 states. [2025-03-16 19:05:08,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9901 to 6025. [2025-03-16 19:05:08,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6025 states, 4454 states have (on average 1.3060170633138752) internal successors, (5817), 4495 states have internal predecessors, (5817), 1011 states have call successors, (1011), 559 states have call predecessors, (1011), 559 states have return successors, (1011), 970 states have call predecessors, (1011), 1011 states have call successors, (1011) [2025-03-16 19:05:08,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6025 states to 6025 states and 7839 transitions. [2025-03-16 19:05:08,517 INFO L78 Accepts]: Start accepts. Automaton has 6025 states and 7839 transitions. Word has length 145 [2025-03-16 19:05:08,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:05:08,518 INFO L471 AbstractCegarLoop]: Abstraction has 6025 states and 7839 transitions. [2025-03-16 19:05:08,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 19 states have internal predecessors, (240), 7 states have call successors, (40), 5 states have call predecessors, (40), 9 states have return successors, (39), 11 states have call predecessors, (39), 7 states have call successors, (39) [2025-03-16 19:05:08,518 INFO L276 IsEmpty]: Start isEmpty. Operand 6025 states and 7839 transitions. [2025-03-16 19:05:08,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-16 19:05:08,526 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:05:08,526 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:05:08,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-16 19:05:08,726 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,SelfDestructingSolverStorable28 [2025-03-16 19:05:08,727 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:05:08,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:05:08,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1296518145, now seen corresponding path program 1 times [2025-03-16 19:05:08,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:05:08,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588460065] [2025-03-16 19:05:08,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:05:08,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:05:08,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-16 19:05:08,751 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-16 19:05:08,751 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:05:08,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:05:08,874 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-03-16 19:05:08,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:05:08,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588460065] [2025-03-16 19:05:08,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588460065] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:05:08,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:05:08,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 19:05:08,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733566743] [2025-03-16 19:05:08,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:05:08,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:05:08,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:05:08,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:05:08,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:05:08,875 INFO L87 Difference]: Start difference. First operand 6025 states and 7839 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-16 19:05:09,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:05:09,653 INFO L93 Difference]: Finished difference Result 17687 states and 23075 transitions. [2025-03-16 19:05:09,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:05:09,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 153 [2025-03-16 19:05:09,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:05:09,693 INFO L225 Difference]: With dead ends: 17687 [2025-03-16 19:05:09,693 INFO L226 Difference]: Without dead ends: 11969 [2025-03-16 19:05:09,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-03-16 19:05:09,705 INFO L435 NwaCegarLoop]: 380 mSDtfsCounter, 212 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:05:09,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 2049 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:05:09,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11969 states. [2025-03-16 19:05:10,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11969 to 7576. [2025-03-16 19:05:10,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7576 states, 5569 states have (on average 1.3040043095708385) internal successors, (7262), 5621 states have internal predecessors, (7262), 1304 states have call successors, (1304), 702 states have call predecessors, (1304), 702 states have return successors, (1304), 1252 states have call predecessors, (1304), 1304 states have call successors, (1304) [2025-03-16 19:05:10,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7576 states to 7576 states and 9870 transitions. [2025-03-16 19:05:10,272 INFO L78 Accepts]: Start accepts. Automaton has 7576 states and 9870 transitions. Word has length 153 [2025-03-16 19:05:10,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:05:10,272 INFO L471 AbstractCegarLoop]: Abstraction has 7576 states and 9870 transitions. [2025-03-16 19:05:10,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-16 19:05:10,273 INFO L276 IsEmpty]: Start isEmpty. Operand 7576 states and 9870 transitions. [2025-03-16 19:05:10,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-16 19:05:10,282 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:05:10,282 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:05:10,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-16 19:05:10,282 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:05:10,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:05:10,283 INFO L85 PathProgramCache]: Analyzing trace with hash 648932184, now seen corresponding path program 1 times [2025-03-16 19:05:10,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:05:10,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755154185] [2025-03-16 19:05:10,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:05:10,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:05:10,293 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-16 19:05:10,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-16 19:05:10,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:05:10,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:05:10,856 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2025-03-16 19:05:10,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:05:10,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755154185] [2025-03-16 19:05:10,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755154185] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:05:10,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185430404] [2025-03-16 19:05:10,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:05:10,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:05:10,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:05:10,859 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) [2025-03-16 19:05:10,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 19:05:10,946 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-16 19:05:11,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-16 19:05:11,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:05:11,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:05:11,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-16 19:05:11,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:05:11,101 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-03-16 19:05:11,104 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:05:11,189 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-03-16 19:05:11,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185430404] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 19:05:11,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 19:05:11,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2025-03-16 19:05:11,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651435113] [2025-03-16 19:05:11,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 19:05:11,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-16 19:05:11,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:05:11,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-16 19:05:11,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2025-03-16 19:05:11,191 INFO L87 Difference]: Start difference. First operand 7576 states and 9870 transitions. Second operand has 15 states, 15 states have (on average 11.8) internal successors, (177), 14 states have internal predecessors, (177), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2025-03-16 19:05:12,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:05:12,823 INFO L93 Difference]: Finished difference Result 16437 states and 21392 transitions. [2025-03-16 19:05:12,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-03-16 19:05:12,823 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 11.8) internal successors, (177), 14 states have internal predecessors, (177), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 155 [2025-03-16 19:05:12,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:05:12,855 INFO L225 Difference]: With dead ends: 16437 [2025-03-16 19:05:12,855 INFO L226 Difference]: Without dead ends: 9067 [2025-03-16 19:05:12,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=272, Invalid=1450, Unknown=0, NotChecked=0, Total=1722 [2025-03-16 19:05:12,868 INFO L435 NwaCegarLoop]: 426 mSDtfsCounter, 1059 mSDsluCounter, 3297 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 3723 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 19:05:12,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 3723 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 19:05:12,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9067 states. [2025-03-16 19:05:13,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9067 to 8795. [2025-03-16 19:05:13,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8795 states, 6452 states have (on average 1.300836949783013) internal successors, (8393), 6514 states have internal predecessors, (8393), 1517 states have call successors, (1517), 825 states have call predecessors, (1517), 825 states have return successors, (1517), 1455 states have call predecessors, (1517), 1517 states have call successors, (1517) [2025-03-16 19:05:13,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8795 states to 8795 states and 11427 transitions. [2025-03-16 19:05:13,594 INFO L78 Accepts]: Start accepts. Automaton has 8795 states and 11427 transitions. Word has length 155 [2025-03-16 19:05:13,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:05:13,594 INFO L471 AbstractCegarLoop]: Abstraction has 8795 states and 11427 transitions. [2025-03-16 19:05:13,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.8) internal successors, (177), 14 states have internal predecessors, (177), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2025-03-16 19:05:13,595 INFO L276 IsEmpty]: Start isEmpty. Operand 8795 states and 11427 transitions. [2025-03-16 19:05:13,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-03-16 19:05:13,603 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:05:13,603 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-03-16 19:05:13,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-16 19:05:13,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:05:13,804 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:05:13,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:05:13,804 INFO L85 PathProgramCache]: Analyzing trace with hash -384749439, now seen corresponding path program 1 times [2025-03-16 19:05:13,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:05:13,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921556071] [2025-03-16 19:05:13,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:05:13,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:05:13,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-03-16 19:05:13,836 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-03-16 19:05:13,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:05:13,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:05:14,226 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2025-03-16 19:05:14,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:05:14,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921556071] [2025-03-16 19:05:14,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921556071] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:05:14,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280206803] [2025-03-16 19:05:14,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:05:14,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:05:14,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:05:14,229 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) [2025-03-16 19:05:14,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-16 19:05:14,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-03-16 19:05:14,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-03-16 19:05:14,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:05:14,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:05:14,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-03-16 19:05:14,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:05:14,694 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 73 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-16 19:05:14,695 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:05:14,942 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-03-16 19:05:14,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280206803] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 19:05:14,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 19:05:14,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 9] total 26 [2025-03-16 19:05:14,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100117347] [2025-03-16 19:05:14,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 19:05:14,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-16 19:05:14,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:05:14,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-16 19:05:14,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2025-03-16 19:05:14,944 INFO L87 Difference]: Start difference. First operand 8795 states and 11427 transitions. Second operand has 26 states, 26 states have (on average 8.076923076923077) internal successors, (210), 22 states have internal predecessors, (210), 7 states have call successors, (38), 4 states have call predecessors, (38), 9 states have return successors, (40), 11 states have call predecessors, (40), 7 states have call successors, (40) [2025-03-16 19:05:18,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:05:18,993 INFO L93 Difference]: Finished difference Result 25642 states and 34217 transitions. [2025-03-16 19:05:18,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-03-16 19:05:18,994 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.076923076923077) internal successors, (210), 22 states have internal predecessors, (210), 7 states have call successors, (38), 4 states have call predecessors, (38), 9 states have return successors, (40), 11 states have call predecessors, (40), 7 states have call successors, (40) Word has length 164 [2025-03-16 19:05:18,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:05:19,049 INFO L225 Difference]: With dead ends: 25642 [2025-03-16 19:05:19,049 INFO L226 Difference]: Without dead ends: 16839 [2025-03-16 19:05:19,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=570, Invalid=3212, Unknown=0, NotChecked=0, Total=3782 [2025-03-16 19:05:19,065 INFO L435 NwaCegarLoop]: 686 mSDtfsCounter, 1599 mSDsluCounter, 7899 mSDsCounter, 0 mSdLazyCounter, 3059 mSolverCounterSat, 579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1599 SdHoareTripleChecker+Valid, 8585 SdHoareTripleChecker+Invalid, 3638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 579 IncrementalHoareTripleChecker+Valid, 3059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:05:19,065 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1599 Valid, 8585 Invalid, 3638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [579 Valid, 3059 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-16 19:05:19,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16839 states. [2025-03-16 19:05:20,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16839 to 11325. [2025-03-16 19:05:20,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11325 states, 8283 states have (on average 1.2950621755402631) internal successors, (10727), 8370 states have internal predecessors, (10727), 1963 states have call successors, (1963), 1078 states have call predecessors, (1963), 1078 states have return successors, (1963), 1876 states have call predecessors, (1963), 1963 states have call successors, (1963) [2025-03-16 19:05:20,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11325 states to 11325 states and 14653 transitions. [2025-03-16 19:05:20,597 INFO L78 Accepts]: Start accepts. Automaton has 11325 states and 14653 transitions. Word has length 164 [2025-03-16 19:05:20,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:05:20,598 INFO L471 AbstractCegarLoop]: Abstraction has 11325 states and 14653 transitions. [2025-03-16 19:05:20,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.076923076923077) internal successors, (210), 22 states have internal predecessors, (210), 7 states have call successors, (38), 4 states have call predecessors, (38), 9 states have return successors, (40), 11 states have call predecessors, (40), 7 states have call successors, (40) [2025-03-16 19:05:20,598 INFO L276 IsEmpty]: Start isEmpty. Operand 11325 states and 14653 transitions. [2025-03-16 19:05:20,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-03-16 19:05:20,608 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:05:20,609 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-03-16 19:05:20,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-16 19:05:20,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:05:20,813 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:05:20,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:05:20,814 INFO L85 PathProgramCache]: Analyzing trace with hash 2135771589, now seen corresponding path program 1 times [2025-03-16 19:05:20,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:05:20,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162509955] [2025-03-16 19:05:20,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:05:20,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:05:20,826 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-16 19:05:20,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-16 19:05:20,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:05:20,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:05:20,969 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2025-03-16 19:05:20,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:05:20,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162509955] [2025-03-16 19:05:20,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162509955] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:05:20,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:05:20,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 19:05:20,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686882470] [2025-03-16 19:05:20,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:05:20,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:05:20,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:05:20,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:05:20,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:05:20,970 INFO L87 Difference]: Start difference. First operand 11325 states and 14653 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-16 19:05:23,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:05:23,519 INFO L93 Difference]: Finished difference Result 31476 states and 40759 transitions. [2025-03-16 19:05:23,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:05:23,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 173 [2025-03-16 19:05:23,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:05:23,589 INFO L225 Difference]: With dead ends: 31476 [2025-03-16 19:05:23,589 INFO L226 Difference]: Without dead ends: 20509 [2025-03-16 19:05:23,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-03-16 19:05:23,612 INFO L435 NwaCegarLoop]: 458 mSDtfsCounter, 208 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:05:23,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 2428 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:05:23,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20509 states. [2025-03-16 19:05:26,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20509 to 17742. [2025-03-16 19:05:26,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17742 states, 12894 states have (on average 1.287730727470141) internal successors, (16604), 13032 states have internal predecessors, (16604), 3145 states have call successors, (3145), 1702 states have call predecessors, (3145), 1702 states have return successors, (3145), 3007 states have call predecessors, (3145), 3145 states have call successors, (3145) [2025-03-16 19:05:26,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17742 states to 17742 states and 22894 transitions. [2025-03-16 19:05:26,244 INFO L78 Accepts]: Start accepts. Automaton has 17742 states and 22894 transitions. Word has length 173 [2025-03-16 19:05:26,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:05:26,244 INFO L471 AbstractCegarLoop]: Abstraction has 17742 states and 22894 transitions. [2025-03-16 19:05:26,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-16 19:05:26,244 INFO L276 IsEmpty]: Start isEmpty. Operand 17742 states and 22894 transitions. [2025-03-16 19:05:26,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-03-16 19:05:26,259 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:05:26,259 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-03-16 19:05:26,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-03-16 19:05:26,259 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:05:26,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:05:26,260 INFO L85 PathProgramCache]: Analyzing trace with hash 75134277, now seen corresponding path program 1 times [2025-03-16 19:05:26,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:05:26,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966761864] [2025-03-16 19:05:26,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:05:26,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:05:26,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-16 19:05:26,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-16 19:05:26,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:05:26,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:05:26,760 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 34 proven. 13 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2025-03-16 19:05:26,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:05:26,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966761864] [2025-03-16 19:05:26,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966761864] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:05:26,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187465032] [2025-03-16 19:05:26,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:05:26,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:05:26,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:05:26,762 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) [2025-03-16 19:05:26,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-16 19:05:26,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-16 19:05:26,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-16 19:05:26,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:05:26,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:05:26,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-16 19:05:26,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:05:27,079 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 60 proven. 54 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-16 19:05:27,080 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:05:27,271 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2025-03-16 19:05:27,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187465032] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 19:05:27,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 19:05:27,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 8] total 24 [2025-03-16 19:05:27,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438295576] [2025-03-16 19:05:27,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 19:05:27,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-16 19:05:27,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:05:27,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-16 19:05:27,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2025-03-16 19:05:27,272 INFO L87 Difference]: Start difference. First operand 17742 states and 22894 transitions. Second operand has 24 states, 24 states have (on average 9.708333333333334) internal successors, (233), 20 states have internal predecessors, (233), 7 states have call successors, (45), 4 states have call predecessors, (45), 9 states have return successors, (44), 11 states have call predecessors, (44), 7 states have call successors, (44) [2025-03-16 19:05:30,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:05:30,650 INFO L93 Difference]: Finished difference Result 42991 states and 55170 transitions. [2025-03-16 19:05:30,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-16 19:05:30,650 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 9.708333333333334) internal successors, (233), 20 states have internal predecessors, (233), 7 states have call successors, (45), 4 states have call predecessors, (45), 9 states have return successors, (44), 11 states have call predecessors, (44), 7 states have call successors, (44) Word has length 173 [2025-03-16 19:05:30,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:05:30,741 INFO L225 Difference]: With dead ends: 42991 [2025-03-16 19:05:30,742 INFO L226 Difference]: Without dead ends: 24525 [2025-03-16 19:05:30,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=426, Invalid=2226, Unknown=0, NotChecked=0, Total=2652 [2025-03-16 19:05:30,775 INFO L435 NwaCegarLoop]: 411 mSDtfsCounter, 1151 mSDsluCounter, 3724 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 4135 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 19:05:30,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1160 Valid, 4135 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 19:05:30,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24525 states. [2025-03-16 19:05:33,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24525 to 19584. [2025-03-16 19:05:33,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19584 states, 14237 states have (on average 1.2815902226592681) internal successors, (18246), 14388 states have internal predecessors, (18246), 3473 states have call successors, (3473), 1873 states have call predecessors, (3473), 1873 states have return successors, (3473), 3322 states have call predecessors, (3473), 3473 states have call successors, (3473) [2025-03-16 19:05:33,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19584 states to 19584 states and 25192 transitions. [2025-03-16 19:05:33,563 INFO L78 Accepts]: Start accepts. Automaton has 19584 states and 25192 transitions. Word has length 173 [2025-03-16 19:05:33,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:05:33,563 INFO L471 AbstractCegarLoop]: Abstraction has 19584 states and 25192 transitions. [2025-03-16 19:05:33,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.708333333333334) internal successors, (233), 20 states have internal predecessors, (233), 7 states have call successors, (45), 4 states have call predecessors, (45), 9 states have return successors, (44), 11 states have call predecessors, (44), 7 states have call successors, (44) [2025-03-16 19:05:33,563 INFO L276 IsEmpty]: Start isEmpty. Operand 19584 states and 25192 transitions. [2025-03-16 19:05:33,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 19:05:33,575 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:05:33,576 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:05:33,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-16 19:05:33,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:05:33,776 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:05:33,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:05:33,777 INFO L85 PathProgramCache]: Analyzing trace with hash 658897245, now seen corresponding path program 1 times [2025-03-16 19:05:33,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:05:33,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402577937] [2025-03-16 19:05:33,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:05:33,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:05:33,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 19:05:33,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 19:05:33,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:05:33,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:05:34,166 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-03-16 19:05:34,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:05:34,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402577937] [2025-03-16 19:05:34,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402577937] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:05:34,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672146490] [2025-03-16 19:05:34,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:05:34,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:05:34,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:05:34,169 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) [2025-03-16 19:05:34,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-16 19:05:34,263 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 19:05:34,315 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 19:05:34,315 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:05:34,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:05:34,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-16 19:05:34,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:05:34,673 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 66 proven. 23 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-16 19:05:34,673 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:05:35,019 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-03-16 19:05:35,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672146490] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 19:05:35,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 19:05:35,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 10] total 22 [2025-03-16 19:05:35,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057512522] [2025-03-16 19:05:35,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 19:05:35,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-16 19:05:35,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:05:35,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-16 19:05:35,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2025-03-16 19:05:35,020 INFO L87 Difference]: Start difference. First operand 19584 states and 25192 transitions. Second operand has 22 states, 22 states have (on average 11.863636363636363) internal successors, (261), 22 states have internal predecessors, (261), 12 states have call successors, (47), 6 states have call predecessors, (47), 6 states have return successors, (46), 12 states have call predecessors, (46), 12 states have call successors, (46) [2025-03-16 19:05:37,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:05:37,598 INFO L93 Difference]: Finished difference Result 33870 states and 43630 transitions. [2025-03-16 19:05:37,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-16 19:05:37,598 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.863636363636363) internal successors, (261), 22 states have internal predecessors, (261), 12 states have call successors, (47), 6 states have call predecessors, (47), 6 states have return successors, (46), 12 states have call predecessors, (46), 12 states have call successors, (46) Word has length 172 [2025-03-16 19:05:37,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:05:37,649 INFO L225 Difference]: With dead ends: 33870 [2025-03-16 19:05:37,649 INFO L226 Difference]: Without dead ends: 14672 [2025-03-16 19:05:37,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=606, Invalid=1464, Unknown=0, NotChecked=0, Total=2070 [2025-03-16 19:05:37,675 INFO L435 NwaCegarLoop]: 295 mSDtfsCounter, 1651 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:05:37,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 1261 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:05:37,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14672 states. [2025-03-16 19:05:39,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14672 to 14598. [2025-03-16 19:05:39,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14598 states, 10657 states have (on average 1.275030496387351) internal successors, (13588), 10769 states have internal predecessors, (13588), 2542 states have call successors, (2542), 1398 states have call predecessors, (2542), 1398 states have return successors, (2542), 2430 states have call predecessors, (2542), 2542 states have call successors, (2542) [2025-03-16 19:05:39,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14598 states to 14598 states and 18672 transitions. [2025-03-16 19:05:39,404 INFO L78 Accepts]: Start accepts. Automaton has 14598 states and 18672 transitions. Word has length 172 [2025-03-16 19:05:39,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:05:39,405 INFO L471 AbstractCegarLoop]: Abstraction has 14598 states and 18672 transitions. [2025-03-16 19:05:39,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.863636363636363) internal successors, (261), 22 states have internal predecessors, (261), 12 states have call successors, (47), 6 states have call predecessors, (47), 6 states have return successors, (46), 12 states have call predecessors, (46), 12 states have call successors, (46) [2025-03-16 19:05:39,405 INFO L276 IsEmpty]: Start isEmpty. Operand 14598 states and 18672 transitions. [2025-03-16 19:05:39,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-03-16 19:05:39,413 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:05:39,413 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:05:39,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-16 19:05:39,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-03-16 19:05:39,613 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:05:39,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:05:39,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1296847168, now seen corresponding path program 1 times [2025-03-16 19:05:39,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:05:39,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615646056] [2025-03-16 19:05:39,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:05:39,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:05:39,623 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-16 19:05:39,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-16 19:05:39,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:05:39,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:05:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-03-16 19:05:40,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:05:40,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615646056] [2025-03-16 19:05:40,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615646056] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:05:40,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841376169] [2025-03-16 19:05:40,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:05:40,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:05:40,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:05:40,101 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) [2025-03-16 19:05:40,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-16 19:05:40,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-16 19:05:40,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-16 19:05:40,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:05:40,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:05:40,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-03-16 19:05:40,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:05:40,565 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 62 proven. 28 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-16 19:05:40,565 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:05:40,941 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-03-16 19:05:40,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841376169] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 19:05:40,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 19:05:40,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 14] total 33 [2025-03-16 19:05:40,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461791302] [2025-03-16 19:05:40,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 19:05:40,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-03-16 19:05:40,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:05:40,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-03-16 19:05:40,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2025-03-16 19:05:40,942 INFO L87 Difference]: Start difference. First operand 14598 states and 18672 transitions. Second operand has 33 states, 33 states have (on average 8.333333333333334) internal successors, (275), 32 states have internal predecessors, (275), 12 states have call successors, (50), 6 states have call predecessors, (50), 8 states have return successors, (49), 13 states have call predecessors, (49), 12 states have call successors, (49) [2025-03-16 19:05:50,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:05:50,622 INFO L93 Difference]: Finished difference Result 52147 states and 68173 transitions. [2025-03-16 19:05:50,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2025-03-16 19:05:50,622 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 8.333333333333334) internal successors, (275), 32 states have internal predecessors, (275), 12 states have call successors, (50), 6 states have call predecessors, (50), 8 states have return successors, (49), 13 states have call predecessors, (49), 12 states have call successors, (49) Word has length 173 [2025-03-16 19:05:50,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:05:50,732 INFO L225 Difference]: With dead ends: 52147 [2025-03-16 19:05:50,732 INFO L226 Difference]: Without dead ends: 37935 [2025-03-16 19:05:50,766 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4871 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2078, Invalid=13672, Unknown=0, NotChecked=0, Total=15750 [2025-03-16 19:05:50,766 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 4719 mSDsluCounter, 9140 mSDsCounter, 0 mSdLazyCounter, 5923 mSolverCounterSat, 1893 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4723 SdHoareTripleChecker+Valid, 10022 SdHoareTripleChecker+Invalid, 7816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1893 IncrementalHoareTripleChecker+Valid, 5923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-16 19:05:50,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4723 Valid, 10022 Invalid, 7816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1893 Valid, 5923 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-16 19:05:50,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37935 states. [2025-03-16 19:05:53,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37935 to 16970. [2025-03-16 19:05:53,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16970 states, 12478 states have (on average 1.2725597050809425) internal successors, (15879), 12605 states have internal predecessors, (15879), 2883 states have call successors, (2883), 1608 states have call predecessors, (2883), 1608 states have return successors, (2883), 2756 states have call predecessors, (2883), 2883 states have call successors, (2883) [2025-03-16 19:05:53,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16970 states to 16970 states and 21645 transitions. [2025-03-16 19:05:53,318 INFO L78 Accepts]: Start accepts. Automaton has 16970 states and 21645 transitions. Word has length 173 [2025-03-16 19:05:53,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:05:53,319 INFO L471 AbstractCegarLoop]: Abstraction has 16970 states and 21645 transitions. [2025-03-16 19:05:53,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 8.333333333333334) internal successors, (275), 32 states have internal predecessors, (275), 12 states have call successors, (50), 6 states have call predecessors, (50), 8 states have return successors, (49), 13 states have call predecessors, (49), 12 states have call successors, (49) [2025-03-16 19:05:53,319 INFO L276 IsEmpty]: Start isEmpty. Operand 16970 states and 21645 transitions. [2025-03-16 19:05:53,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2025-03-16 19:05:53,327 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:05:53,327 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:05:53,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-16 19:05:53,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-03-16 19:05:53,528 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:05:53,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:05:53,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1542408024, now seen corresponding path program 1 times [2025-03-16 19:05:53,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:05:53,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785975498] [2025-03-16 19:05:53,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:05:53,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:05:53,537 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 179 statements into 1 equivalence classes. [2025-03-16 19:05:53,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 179 of 179 statements. [2025-03-16 19:05:53,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:05:53,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:05:53,657 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 14 proven. 25 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-16 19:05:53,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:05:53,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785975498] [2025-03-16 19:05:53,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785975498] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:05:53,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133867468] [2025-03-16 19:05:53,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:05:53,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:05:53,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:05:53,660 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) [2025-03-16 19:05:53,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-16 19:05:53,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 179 statements into 1 equivalence classes. [2025-03-16 19:05:53,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 179 of 179 statements. [2025-03-16 19:05:53,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:05:53,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:05:53,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 19:05:53,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:05:54,023 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 8 proven. 107 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-16 19:05:54,024 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:05:54,135 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 14 proven. 25 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-16 19:05:54,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133867468] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 19:05:54,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 19:05:54,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2025-03-16 19:05:54,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823634679] [2025-03-16 19:05:54,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 19:05:54,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-16 19:05:54,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:05:54,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-16 19:05:54,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-16 19:05:54,136 INFO L87 Difference]: Start difference. First operand 16970 states and 21645 transitions. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 9 states have internal predecessors, (154), 4 states have call successors, (38), 5 states have call predecessors, (38), 7 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) [2025-03-16 19:05:57,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:05:57,596 INFO L93 Difference]: Finished difference Result 43502 states and 54681 transitions. [2025-03-16 19:05:57,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-16 19:05:57,597 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 9 states have internal predecessors, (154), 4 states have call successors, (38), 5 states have call predecessors, (38), 7 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) Word has length 179 [2025-03-16 19:05:57,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:05:57,672 INFO L225 Difference]: With dead ends: 43502 [2025-03-16 19:05:57,672 INFO L226 Difference]: Without dead ends: 26957 [2025-03-16 19:05:57,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 354 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2025-03-16 19:05:57,701 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 308 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1959 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:05:57,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 1959 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:05:57,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2025-03-16 19:06:00,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 22482. [2025-03-16 19:06:00,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22482 states, 16618 states have (on average 1.248224816464075) internal successors, (20743), 16812 states have internal predecessors, (20743), 3709 states have call successors, (3709), 2154 states have call predecessors, (3709), 2154 states have return successors, (3709), 3515 states have call predecessors, (3709), 3709 states have call successors, (3709) [2025-03-16 19:06:00,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22482 states to 22482 states and 28161 transitions. [2025-03-16 19:06:00,953 INFO L78 Accepts]: Start accepts. Automaton has 22482 states and 28161 transitions. Word has length 179 [2025-03-16 19:06:00,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:06:00,954 INFO L471 AbstractCegarLoop]: Abstraction has 22482 states and 28161 transitions. [2025-03-16 19:06:00,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 9 states have internal predecessors, (154), 4 states have call successors, (38), 5 states have call predecessors, (38), 7 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) [2025-03-16 19:06:00,954 INFO L276 IsEmpty]: Start isEmpty. Operand 22482 states and 28161 transitions. [2025-03-16 19:06:00,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2025-03-16 19:06:00,962 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:06:00,963 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 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] [2025-03-16 19:06:00,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-16 19:06:01,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-03-16 19:06:01,163 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:06:01,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:06:01,164 INFO L85 PathProgramCache]: Analyzing trace with hash -2101005925, now seen corresponding path program 1 times [2025-03-16 19:06:01,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:06:01,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962765264] [2025-03-16 19:06:01,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:06:01,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:06:01,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-16 19:06:01,190 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-16 19:06:01,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:06:01,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:06:01,575 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2025-03-16 19:06:01,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:06:01,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962765264] [2025-03-16 19:06:01,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962765264] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:06:01,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365675100] [2025-03-16 19:06:01,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:06:01,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:06:01,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:06:01,578 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) [2025-03-16 19:06:01,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-16 19:06:01,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-16 19:06:01,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-16 19:06:01,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:06:01,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:06:01,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-16 19:06:01,730 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:06:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 25 proven. 74 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-16 19:06:01,926 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:06:02,147 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2025-03-16 19:06:02,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365675100] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 19:06:02,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 19:06:02,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 24 [2025-03-16 19:06:02,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719903353] [2025-03-16 19:06:02,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 19:06:02,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-16 19:06:02,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:06:02,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-16 19:06:02,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2025-03-16 19:06:02,149 INFO L87 Difference]: Start difference. First operand 22482 states and 28161 transitions. Second operand has 24 states, 24 states have (on average 11.541666666666666) internal successors, (277), 22 states have internal predecessors, (277), 9 states have call successors, (53), 4 states have call predecessors, (53), 7 states have return successors, (52), 11 states have call predecessors, (52), 9 states have call successors, (52)