./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/memory-model/2SB.i --full-output --preprocessor.use.memory.slicer false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/memory-model/2SB.i -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 cec14f16ae81e958645b6575cf97932d8a09e14a8eafa007b1475b8cf31c9f62 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 23:15:05,718 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 23:15:05,780 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 23:15:05,784 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 23:15:05,784 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 23:15:05,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 23:15:05,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 23:15:05,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 23:15:05,807 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 23:15:05,809 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 23:15:05,810 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 23:15:05,810 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 23:15:05,811 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 23:15:05,811 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 23:15:05,812 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 23:15:05,812 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 23:15:05,812 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 23:15:05,812 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 23:15:05,812 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 23:15:05,813 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 23:15:05,813 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 23:15:05,813 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 23:15:05,813 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 23:15:05,813 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 23:15:05,814 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 23:15:05,814 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 23:15:05,814 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 23:15:05,814 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 23:15:05,815 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 23:15:05,815 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 23:15:05,816 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 23:15:05,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 23:15:05,816 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 23:15:05,816 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 23:15:05,816 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 23:15:05,816 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 23:15:05,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 23:15:05,817 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 23:15:05,817 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 23:15:05,817 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 23:15:05,817 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 23:15:05,817 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 23:15:05,817 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec14f16ae81e958645b6575cf97932d8a09e14a8eafa007b1475b8cf31c9f62 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-22 23:15:06,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 23:15:06,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 23:15:06,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 23:15:06,039 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 23:15:06,039 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 23:15:06,040 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memory-model/2SB.i [2023-11-22 23:15:06,950 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 23:15:07,154 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 23:15:07,154 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/memory-model/2SB.i [2023-11-22 23:15:07,184 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66f3648e9/38a2ebc86c234cbb8b3e3587f34a1de8/FLAG826188cdd [2023-11-22 23:15:07,200 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66f3648e9/38a2ebc86c234cbb8b3e3587f34a1de8 [2023-11-22 23:15:07,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 23:15:07,203 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 23:15:07,204 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 23:15:07,204 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 23:15:07,209 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 23:15:07,209 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:15:07" (1/1) ... [2023-11-22 23:15:07,210 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56e0c7a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:07, skipping insertion in model container [2023-11-22 23:15:07,210 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:15:07" (1/1) ... [2023-11-22 23:15:07,244 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 23:15:07,408 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/memory-model/2SB.i[13547,13560] [2023-11-22 23:15:07,412 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 23:15:07,422 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 23:15:07,476 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/memory-model/2SB.i[13547,13560] [2023-11-22 23:15:07,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 23:15:07,487 INFO L206 MainTranslator]: Completed translation [2023-11-22 23:15:07,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:07 WrapperNode [2023-11-22 23:15:07,488 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 23:15:07,489 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 23:15:07,489 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 23:15:07,489 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 23:15:07,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:07" (1/1) ... [2023-11-22 23:15:07,516 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:07" (1/1) ... [2023-11-22 23:15:07,555 INFO L138 Inliner]: procedures = 28, calls = 405, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 900 [2023-11-22 23:15:07,556 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 23:15:07,556 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 23:15:07,557 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 23:15:07,558 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 23:15:07,570 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:07" (1/1) ... [2023-11-22 23:15:07,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:07" (1/1) ... [2023-11-22 23:15:07,578 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:07" (1/1) ... [2023-11-22 23:15:07,578 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:07" (1/1) ... [2023-11-22 23:15:07,606 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:07" (1/1) ... [2023-11-22 23:15:07,616 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:07" (1/1) ... [2023-11-22 23:15:07,629 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:07" (1/1) ... [2023-11-22 23:15:07,632 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:07" (1/1) ... [2023-11-22 23:15:07,636 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 23:15:07,637 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 23:15:07,637 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 23:15:07,637 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 23:15:07,638 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:07" (1/1) ... [2023-11-22 23:15:07,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 23:15:07,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:07,660 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 23:15:07,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 23:15:07,697 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_write [2023-11-22 23:15:07,697 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_write [2023-11-22 23:15:07,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_headerT [2023-11-22 23:15:07,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_nondet_headerT [2023-11-22 23:15:07,698 INFO L130 BoogieDeclarations]: Found specification of procedure stepWriteBuffer [2023-11-22 23:15:07,698 INFO L138 BoogieDeclarations]: Found implementation of procedure stepWriteBuffer [2023-11-22 23:15:07,699 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_read [2023-11-22 23:15:07,699 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_read [2023-11-22 23:15:07,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-22 23:15:07,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 23:15:07,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-22 23:15:07,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-22 23:15:07,700 INFO L130 BoogieDeclarations]: Found specification of procedure store_buffering_2_conditions [2023-11-22 23:15:07,701 INFO L138 BoogieDeclarations]: Found implementation of procedure store_buffering_2_conditions [2023-11-22 23:15:07,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 23:15:07,701 INFO L130 BoogieDeclarations]: Found specification of procedure initWriteBuffer [2023-11-22 23:15:07,701 INFO L138 BoogieDeclarations]: Found implementation of procedure initWriteBuffer [2023-11-22 23:15:07,701 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_fence [2023-11-22 23:15:07,701 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_fence [2023-11-22 23:15:07,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 23:15:07,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 23:15:07,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 23:15:07,870 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 23:15:07,872 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 23:15:08,573 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 23:15:08,620 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 23:15:08,620 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-11-22 23:15:08,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:15:08 BoogieIcfgContainer [2023-11-22 23:15:08,621 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 23:15:08,622 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 23:15:08,622 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 23:15:08,625 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 23:15:08,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:15:07" (1/3) ... [2023-11-22 23:15:08,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5042803f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:15:08, skipping insertion in model container [2023-11-22 23:15:08,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:07" (2/3) ... [2023-11-22 23:15:08,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5042803f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:15:08, skipping insertion in model container [2023-11-22 23:15:08,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:15:08" (3/3) ... [2023-11-22 23:15:08,626 INFO L112 eAbstractionObserver]: Analyzing ICFG 2SB.i [2023-11-22 23:15:08,638 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 23:15:08,638 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 23:15:08,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 23:15:08,675 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2e99b454, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 23:15:08,675 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 23:15:08,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 132 states have (on average 1.6136363636363635) internal successors, (213), 135 states have internal predecessors, (213), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 23:15:08,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-22 23:15:08,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:08,689 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 23:15:08,690 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:08,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:08,695 INFO L85 PathProgramCache]: Analyzing trace with hash 553220182, now seen corresponding path program 1 times [2023-11-22 23:15:08,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:08,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089361011] [2023-11-22 23:15:08,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:08,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:09,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:15:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:09,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 23:15:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:09,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-22 23:15:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:09,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 23:15:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:09,167 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-22 23:15:09,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:09,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089361011] [2023-11-22 23:15:09,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089361011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:15:09,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:15:09,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:15:09,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696759774] [2023-11-22 23:15:09,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:15:09,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:15:09,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:09,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:15:09,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:15:09,218 INFO L87 Difference]: Start difference. First operand has 155 states, 132 states have (on average 1.6136363636363635) internal successors, (213), 135 states have internal predecessors, (213), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:15:09,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:09,715 INFO L93 Difference]: Finished difference Result 311 states and 489 transitions. [2023-11-22 23:15:09,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:15:09,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2023-11-22 23:15:09,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:09,723 INFO L225 Difference]: With dead ends: 311 [2023-11-22 23:15:09,723 INFO L226 Difference]: Without dead ends: 150 [2023-11-22 23:15:09,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:15:09,728 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 2 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:09,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 490 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 23:15:09,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-22 23:15:09,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2023-11-22 23:15:09,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 126 states have (on average 1.3253968253968254) internal successors, (167), 128 states have internal predecessors, (167), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 23:15:09,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 195 transitions. [2023-11-22 23:15:09,767 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 195 transitions. Word has length 40 [2023-11-22 23:15:09,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:09,768 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 195 transitions. [2023-11-22 23:15:09,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:15:09,768 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 195 transitions. [2023-11-22 23:15:09,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-22 23:15:09,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:09,771 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 23:15:09,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 23:15:09,772 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:09,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:09,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1362222198, now seen corresponding path program 1 times [2023-11-22 23:15:09,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:09,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644148036] [2023-11-22 23:15:09,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:09,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:09,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 23:15:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:09,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 23:15:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:09,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:15:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:09,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 23:15:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:09,915 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-22 23:15:09,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:09,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644148036] [2023-11-22 23:15:09,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644148036] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:09,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511030824] [2023-11-22 23:15:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:09,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:09,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:09,918 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) [2023-11-22 23:15:09,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 23:15:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:10,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 23:15:10,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 23:15:10,139 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:15:10,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511030824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:15:10,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 23:15:10,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 23:15:10,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673204976] [2023-11-22 23:15:10,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:15:10,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:15:10,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:10,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:15:10,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:10,146 INFO L87 Difference]: Start difference. First operand 148 states and 195 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-22 23:15:10,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:10,400 INFO L93 Difference]: Finished difference Result 292 states and 387 transitions. [2023-11-22 23:15:10,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:15:10,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2023-11-22 23:15:10,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:10,403 INFO L225 Difference]: With dead ends: 292 [2023-11-22 23:15:10,403 INFO L226 Difference]: Without dead ends: 149 [2023-11-22 23:15:10,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:10,405 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:10,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 356 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:15:10,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-11-22 23:15:10,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2023-11-22 23:15:10,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 127 states have (on average 1.3228346456692914) internal successors, (168), 129 states have internal predecessors, (168), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 23:15:10,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 196 transitions. [2023-11-22 23:15:10,414 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 196 transitions. Word has length 42 [2023-11-22 23:15:10,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:10,414 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 196 transitions. [2023-11-22 23:15:10,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-22 23:15:10,415 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 196 transitions. [2023-11-22 23:15:10,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-22 23:15:10,416 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:10,416 INFO L195 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] [2023-11-22 23:15:10,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-22 23:15:10,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:10,636 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:10,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:10,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1282077826, now seen corresponding path program 1 times [2023-11-22 23:15:10,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:10,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721814541] [2023-11-22 23:15:10,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:10,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:10,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 23:15:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:10,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 23:15:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:10,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 23:15:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:10,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 23:15:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:10,788 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-22 23:15:10,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:10,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721814541] [2023-11-22 23:15:10,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721814541] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:10,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114230270] [2023-11-22 23:15:10,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:10,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:10,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:10,791 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) [2023-11-22 23:15:10,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 23:15:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:10,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 23:15:10,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:10,969 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-22 23:15:10,969 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:15:10,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114230270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:15:10,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 23:15:10,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 23:15:10,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700387589] [2023-11-22 23:15:10,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:15:10,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:15:10,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:10,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:15:10,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:10,971 INFO L87 Difference]: Start difference. First operand 149 states and 196 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-22 23:15:11,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:11,192 INFO L93 Difference]: Finished difference Result 284 states and 374 transitions. [2023-11-22 23:15:11,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:15:11,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 44 [2023-11-22 23:15:11,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:11,201 INFO L225 Difference]: With dead ends: 284 [2023-11-22 23:15:11,201 INFO L226 Difference]: Without dead ends: 156 [2023-11-22 23:15:11,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:11,203 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 6 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:11,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 345 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:15:11,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-22 23:15:11,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 150. [2023-11-22 23:15:11,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 128 states have (on average 1.3203125) internal successors, (169), 130 states have internal predecessors, (169), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 23:15:11,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 197 transitions. [2023-11-22 23:15:11,214 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 197 transitions. Word has length 44 [2023-11-22 23:15:11,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:11,214 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 197 transitions. [2023-11-22 23:15:11,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-22 23:15:11,215 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 197 transitions. [2023-11-22 23:15:11,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-22 23:15:11,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:11,220 INFO L195 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] [2023-11-22 23:15:11,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-22 23:15:11,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-22 23:15:11,424 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:11,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:11,425 INFO L85 PathProgramCache]: Analyzing trace with hash 942228682, now seen corresponding path program 1 times [2023-11-22 23:15:11,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:11,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235362646] [2023-11-22 23:15:11,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:11,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:11,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 23:15:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:11,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 23:15:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:11,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 23:15:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:11,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-22 23:15:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:11,539 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-22 23:15:11,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:11,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235362646] [2023-11-22 23:15:11,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235362646] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:11,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340035261] [2023-11-22 23:15:11,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:11,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:11,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:11,541 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) [2023-11-22 23:15:11,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 23:15:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:11,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 23:15:11,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:11,741 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-22 23:15:11,742 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:15:11,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340035261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:15:11,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 23:15:11,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 23:15:11,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212950534] [2023-11-22 23:15:11,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:15:11,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:15:11,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:11,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:15:11,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:11,744 INFO L87 Difference]: Start difference. First operand 150 states and 197 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-22 23:15:12,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:12,001 INFO L93 Difference]: Finished difference Result 275 states and 363 transitions. [2023-11-22 23:15:12,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:15:12,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2023-11-22 23:15:12,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:12,003 INFO L225 Difference]: With dead ends: 275 [2023-11-22 23:15:12,003 INFO L226 Difference]: Without dead ends: 157 [2023-11-22 23:15:12,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:12,004 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 6 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:12,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 349 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:15:12,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-22 23:15:12,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2023-11-22 23:15:12,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 129 states have (on average 1.317829457364341) internal successors, (170), 131 states have internal predecessors, (170), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 23:15:12,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 198 transitions. [2023-11-22 23:15:12,011 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 198 transitions. Word has length 47 [2023-11-22 23:15:12,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:12,011 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 198 transitions. [2023-11-22 23:15:12,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-22 23:15:12,011 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 198 transitions. [2023-11-22 23:15:12,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-22 23:15:12,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:12,012 INFO L195 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] [2023-11-22 23:15:12,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 23:15:12,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:12,213 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:12,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:12,213 INFO L85 PathProgramCache]: Analyzing trace with hash 851140562, now seen corresponding path program 1 times [2023-11-22 23:15:12,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:12,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063374808] [2023-11-22 23:15:12,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:12,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:12,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 23:15:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:12,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 23:15:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:12,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 23:15:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:12,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:15:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:12,307 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 23:15:12,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:12,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063374808] [2023-11-22 23:15:12,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063374808] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:12,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439659307] [2023-11-22 23:15:12,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:12,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:12,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:12,310 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) [2023-11-22 23:15:12,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 23:15:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:12,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 23:15:12,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:12,510 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 23:15:12,510 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:15:12,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439659307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:15:12,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 23:15:12,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 23:15:12,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254976568] [2023-11-22 23:15:12,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:15:12,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:15:12,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:12,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:15:12,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:12,511 INFO L87 Difference]: Start difference. First operand 151 states and 198 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:15:12,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:12,814 INFO L93 Difference]: Finished difference Result 187 states and 253 transitions. [2023-11-22 23:15:12,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:15:12,814 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), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2023-11-22 23:15:12,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:12,815 INFO L225 Difference]: With dead ends: 187 [2023-11-22 23:15:12,816 INFO L226 Difference]: Without dead ends: 181 [2023-11-22 23:15:12,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:12,817 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 47 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:12,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 309 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:15:12,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-22 23:15:12,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 152. [2023-11-22 23:15:12,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 130 states have (on average 1.3153846153846154) internal successors, (171), 132 states have internal predecessors, (171), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 23:15:12,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 199 transitions. [2023-11-22 23:15:12,823 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 199 transitions. Word has length 50 [2023-11-22 23:15:12,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:12,823 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 199 transitions. [2023-11-22 23:15:12,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:15:12,824 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 199 transitions. [2023-11-22 23:15:12,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-22 23:15:12,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:12,825 INFO L195 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] [2023-11-22 23:15:12,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 23:15:13,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:13,043 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:13,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:13,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1494045014, now seen corresponding path program 1 times [2023-11-22 23:15:13,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:13,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895951054] [2023-11-22 23:15:13,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:13,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:13,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 23:15:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:13,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 23:15:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:13,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 23:15:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:13,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:15:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:13,203 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 23:15:13,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:13,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895951054] [2023-11-22 23:15:13,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895951054] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:13,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73754216] [2023-11-22 23:15:13,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:13,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:13,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:13,205 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) [2023-11-22 23:15:13,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 23:15:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:13,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 23:15:13,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 23:15:13,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:15:13,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73754216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:15:13,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 23:15:13,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 23:15:13,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215785345] [2023-11-22 23:15:13,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:15:13,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:15:13,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:13,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:15:13,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 23:15:13,430 INFO L87 Difference]: Start difference. First operand 152 states and 199 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:15:13,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:13,714 INFO L93 Difference]: Finished difference Result 196 states and 267 transitions. [2023-11-22 23:15:13,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 23:15:13,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2023-11-22 23:15:13,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:13,719 INFO L225 Difference]: With dead ends: 196 [2023-11-22 23:15:13,719 INFO L226 Difference]: Without dead ends: 160 [2023-11-22 23:15:13,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:15:13,720 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 12 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:13,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 522 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:15:13,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-22 23:15:13,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 154. [2023-11-22 23:15:13,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 132 states have (on average 1.3106060606060606) internal successors, (173), 134 states have internal predecessors, (173), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 23:15:13,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 201 transitions. [2023-11-22 23:15:13,726 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 201 transitions. Word has length 60 [2023-11-22 23:15:13,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:13,727 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 201 transitions. [2023-11-22 23:15:13,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:15:13,727 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 201 transitions. [2023-11-22 23:15:13,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-22 23:15:13,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:13,728 INFO L195 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] [2023-11-22 23:15:13,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 23:15:13,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:13,939 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:13,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:13,940 INFO L85 PathProgramCache]: Analyzing trace with hash -2099857704, now seen corresponding path program 1 times [2023-11-22 23:15:13,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:13,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792274936] [2023-11-22 23:15:13,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:13,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:14,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 23:15:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:14,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 23:15:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:14,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 23:15:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:14,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:15:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:14,059 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 23:15:14,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:14,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792274936] [2023-11-22 23:15:14,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792274936] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:14,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364756854] [2023-11-22 23:15:14,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:14,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:14,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:14,061 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) [2023-11-22 23:15:14,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 23:15:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:14,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 23:15:14,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:14,314 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 23:15:14,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:15:14,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364756854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:15:14,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 23:15:14,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 23:15:14,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937143716] [2023-11-22 23:15:14,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:15:14,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:15:14,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:14,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:15:14,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 23:15:14,315 INFO L87 Difference]: Start difference. First operand 154 states and 201 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:15:14,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:14,652 INFO L93 Difference]: Finished difference Result 196 states and 265 transitions. [2023-11-22 23:15:14,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 23:15:14,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2023-11-22 23:15:14,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:14,653 INFO L225 Difference]: With dead ends: 196 [2023-11-22 23:15:14,653 INFO L226 Difference]: Without dead ends: 158 [2023-11-22 23:15:14,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:15:14,654 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 3 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:14,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 521 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:15:14,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-22 23:15:14,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2023-11-22 23:15:14,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 135 states have (on average 1.3037037037037038) internal successors, (176), 137 states have internal predecessors, (176), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 23:15:14,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 204 transitions. [2023-11-22 23:15:14,659 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 204 transitions. Word has length 60 [2023-11-22 23:15:14,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:14,659 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 204 transitions. [2023-11-22 23:15:14,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:15:14,659 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 204 transitions. [2023-11-22 23:15:14,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-22 23:15:14,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:14,660 INFO L195 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] [2023-11-22 23:15:14,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-22 23:15:14,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:14,873 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:14,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:14,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2080851028, now seen corresponding path program 1 times [2023-11-22 23:15:14,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:14,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116588579] [2023-11-22 23:15:14,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:14,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:14,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 23:15:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:14,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 23:15:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:14,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 23:15:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:14,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:15:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:14,971 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 23:15:14,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:14,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116588579] [2023-11-22 23:15:14,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116588579] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:14,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295462850] [2023-11-22 23:15:14,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:14,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:14,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:14,973 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) [2023-11-22 23:15:14,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-22 23:15:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:15,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 23:15:15,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 23:15:15,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:15:15,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295462850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:15:15,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 23:15:15,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 23:15:15,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919548421] [2023-11-22 23:15:15,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:15:15,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:15:15,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:15,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:15:15,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:15,242 INFO L87 Difference]: Start difference. First operand 157 states and 204 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:15:15,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:15,490 INFO L93 Difference]: Finished difference Result 198 states and 264 transitions. [2023-11-22 23:15:15,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:15:15,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2023-11-22 23:15:15,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:15,491 INFO L225 Difference]: With dead ends: 198 [2023-11-22 23:15:15,491 INFO L226 Difference]: Without dead ends: 192 [2023-11-22 23:15:15,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:15,492 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 37 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:15,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 352 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:15:15,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-22 23:15:15,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 191. [2023-11-22 23:15:15,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 169 states have (on average 1.349112426035503) internal successors, (228), 171 states have internal predecessors, (228), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 23:15:15,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 256 transitions. [2023-11-22 23:15:15,497 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 256 transitions. Word has length 60 [2023-11-22 23:15:15,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:15,497 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 256 transitions. [2023-11-22 23:15:15,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:15:15,497 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 256 transitions. [2023-11-22 23:15:15,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-22 23:15:15,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:15,498 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:15:15,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-22 23:15:15,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:15,705 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:15,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:15,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1382026010, now seen corresponding path program 1 times [2023-11-22 23:15:15,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:15,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076241537] [2023-11-22 23:15:15,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:15,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:15,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 23:15:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:15,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 23:15:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:15,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 23:15:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:15,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:15:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 23:15:15,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:15,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076241537] [2023-11-22 23:15:15,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076241537] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:15,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159493186] [2023-11-22 23:15:15,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:15,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:15,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:15,840 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) [2023-11-22 23:15:15,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-22 23:15:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:16,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 23:15:16,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:16,084 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 23:15:16,085 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:15:16,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159493186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:15:16,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 23:15:16,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 23:15:16,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981243850] [2023-11-22 23:15:16,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:15:16,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:15:16,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:16,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:15:16,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 23:15:16,089 INFO L87 Difference]: Start difference. First operand 191 states and 256 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:15:16,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:16,407 INFO L93 Difference]: Finished difference Result 275 states and 383 transitions. [2023-11-22 23:15:16,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 23:15:16,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 74 [2023-11-22 23:15:16,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:16,408 INFO L225 Difference]: With dead ends: 275 [2023-11-22 23:15:16,408 INFO L226 Difference]: Without dead ends: 199 [2023-11-22 23:15:16,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:15:16,409 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 3 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:16,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 521 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:15:16,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-22 23:15:16,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 197. [2023-11-22 23:15:16,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 175 states have (on average 1.3371428571428572) internal successors, (234), 177 states have internal predecessors, (234), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 23:15:16,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 262 transitions. [2023-11-22 23:15:16,413 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 262 transitions. Word has length 74 [2023-11-22 23:15:16,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:16,414 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 262 transitions. [2023-11-22 23:15:16,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:15:16,414 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 262 transitions. [2023-11-22 23:15:16,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-22 23:15:16,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:16,414 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:15:16,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-22 23:15:16,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-22 23:15:16,626 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:16,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:16,627 INFO L85 PathProgramCache]: Analyzing trace with hash -206321892, now seen corresponding path program 1 times [2023-11-22 23:15:16,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:16,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560333921] [2023-11-22 23:15:16,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:16,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:16,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 23:15:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:16,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 23:15:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:16,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 23:15:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:16,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:15:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:16,767 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 23:15:16,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:16,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560333921] [2023-11-22 23:15:16,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560333921] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:16,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395274554] [2023-11-22 23:15:16,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:16,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:16,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:16,769 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) [2023-11-22 23:15:16,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-22 23:15:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:16,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 23:15:16,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:17,009 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 23:15:17,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:15:17,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395274554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:15:17,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 23:15:17,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 23:15:17,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738020372] [2023-11-22 23:15:17,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:15:17,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:15:17,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:17,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:15:17,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 23:15:17,012 INFO L87 Difference]: Start difference. First operand 197 states and 262 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:15:17,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:17,323 INFO L93 Difference]: Finished difference Result 287 states and 395 transitions. [2023-11-22 23:15:17,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 23:15:17,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 74 [2023-11-22 23:15:17,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:17,325 INFO L225 Difference]: With dead ends: 287 [2023-11-22 23:15:17,325 INFO L226 Difference]: Without dead ends: 205 [2023-11-22 23:15:17,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:15:17,326 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 3 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:17,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 521 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:15:17,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-11-22 23:15:17,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2023-11-22 23:15:17,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 181 states have (on average 1.3259668508287292) internal successors, (240), 183 states have internal predecessors, (240), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 23:15:17,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 268 transitions. [2023-11-22 23:15:17,330 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 268 transitions. Word has length 74 [2023-11-22 23:15:17,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:17,331 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 268 transitions. [2023-11-22 23:15:17,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:15:17,331 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 268 transitions. [2023-11-22 23:15:17,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-22 23:15:17,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:17,331 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:15:17,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-22 23:15:17,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-22 23:15:17,544 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:17,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:17,544 INFO L85 PathProgramCache]: Analyzing trace with hash -907386470, now seen corresponding path program 1 times [2023-11-22 23:15:17,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:17,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980518478] [2023-11-22 23:15:17,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:17,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:17,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 23:15:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:17,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 23:15:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:17,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 23:15:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:17,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:15:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:17,645 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 23:15:17,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:17,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980518478] [2023-11-22 23:15:17,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980518478] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:17,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980955146] [2023-11-22 23:15:17,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:17,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:17,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:17,646 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) [2023-11-22 23:15:17,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-22 23:15:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:17,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 23:15:17,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:17,916 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 23:15:17,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:15:17,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980955146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:15:17,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 23:15:17,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 23:15:17,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392769092] [2023-11-22 23:15:17,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:15:17,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:15:17,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:17,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:15:17,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:17,918 INFO L87 Difference]: Start difference. First operand 203 states and 268 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:15:18,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:18,123 INFO L93 Difference]: Finished difference Result 291 states and 393 transitions. [2023-11-22 23:15:18,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:15:18,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 74 [2023-11-22 23:15:18,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:18,125 INFO L225 Difference]: With dead ends: 291 [2023-11-22 23:15:18,125 INFO L226 Difference]: Without dead ends: 285 [2023-11-22 23:15:18,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:18,126 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 23 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:18,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 352 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:15:18,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-11-22 23:15:18,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2023-11-22 23:15:18,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 263 states have (on average 1.361216730038023) internal successors, (358), 265 states have internal predecessors, (358), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 23:15:18,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 386 transitions. [2023-11-22 23:15:18,131 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 386 transitions. Word has length 74 [2023-11-22 23:15:18,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:18,132 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 386 transitions. [2023-11-22 23:15:18,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:15:18,133 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 386 transitions. [2023-11-22 23:15:18,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-22 23:15:18,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:18,134 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:15:18,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-22 23:15:18,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-22 23:15:18,335 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:18,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:18,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1189383374, now seen corresponding path program 1 times [2023-11-22 23:15:18,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:18,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757100939] [2023-11-22 23:15:18,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:18,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:18,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 23:15:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:18,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 23:15:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:18,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 23:15:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:18,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:15:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:18,436 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-22 23:15:18,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:18,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757100939] [2023-11-22 23:15:18,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757100939] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:18,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151266371] [2023-11-22 23:15:18,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:18,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:18,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:18,438 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) [2023-11-22 23:15:18,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-22 23:15:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:18,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 23:15:18,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:18,734 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-22 23:15:18,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:15:18,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151266371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:15:18,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 23:15:18,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 23:15:18,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486884810] [2023-11-22 23:15:18,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:15:18,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:15:18,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:18,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:15:18,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:18,736 INFO L87 Difference]: Start difference. First operand 285 states and 386 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:15:18,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:18,981 INFO L93 Difference]: Finished difference Result 455 states and 629 transitions. [2023-11-22 23:15:18,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:15:18,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 90 [2023-11-22 23:15:18,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:18,983 INFO L225 Difference]: With dead ends: 455 [2023-11-22 23:15:18,983 INFO L226 Difference]: Without dead ends: 449 [2023-11-22 23:15:18,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:18,984 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 20 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:18,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 353 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:15:18,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-11-22 23:15:18,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2023-11-22 23:15:18,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 427 states have (on average 1.3911007025761124) internal successors, (594), 429 states have internal predecessors, (594), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 23:15:18,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 622 transitions. [2023-11-22 23:15:18,995 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 622 transitions. Word has length 90 [2023-11-22 23:15:18,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:18,995 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 622 transitions. [2023-11-22 23:15:18,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:15:18,995 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 622 transitions. [2023-11-22 23:15:18,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-22 23:15:18,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:18,998 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-11-22 23:15:19,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-22 23:15:19,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-22 23:15:19,208 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:19,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:19,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1500422068, now seen corresponding path program 1 times [2023-11-22 23:15:19,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:19,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370727981] [2023-11-22 23:15:19,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:19,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:19,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 23:15:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:19,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 23:15:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:19,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 23:15:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:19,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:15:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:19,367 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-22 23:15:19,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:19,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370727981] [2023-11-22 23:15:19,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370727981] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:19,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374111886] [2023-11-22 23:15:19,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:19,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:19,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:19,371 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 23:15:19,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-22 23:15:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:19,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 23:15:19,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:19,717 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-22 23:15:19,718 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:15:19,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374111886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:15:19,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 23:15:19,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 23:15:19,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887885878] [2023-11-22 23:15:19,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:15:19,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:15:19,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:19,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:15:19,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:19,721 INFO L87 Difference]: Start difference. First operand 449 states and 622 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:15:19,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:19,964 INFO L93 Difference]: Finished difference Result 783 states and 1101 transitions. [2023-11-22 23:15:19,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:15:19,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 100 [2023-11-22 23:15:19,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:19,966 INFO L225 Difference]: With dead ends: 783 [2023-11-22 23:15:19,966 INFO L226 Difference]: Without dead ends: 777 [2023-11-22 23:15:19,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:19,967 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 16 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:19,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 351 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:15:19,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2023-11-22 23:15:19,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 777. [2023-11-22 23:15:19,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 755 states have (on average 1.4119205298013244) internal successors, (1066), 757 states have internal predecessors, (1066), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 23:15:19,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1094 transitions. [2023-11-22 23:15:19,979 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1094 transitions. Word has length 100 [2023-11-22 23:15:19,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:19,980 INFO L495 AbstractCegarLoop]: Abstraction has 777 states and 1094 transitions. [2023-11-22 23:15:19,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:15:19,980 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1094 transitions. [2023-11-22 23:15:19,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-22 23:15:19,981 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:19,981 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:15:19,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-22 23:15:20,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-22 23:15:20,193 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:20,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:20,193 INFO L85 PathProgramCache]: Analyzing trace with hash -210778190, now seen corresponding path program 1 times [2023-11-22 23:15:20,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:20,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482606917] [2023-11-22 23:15:20,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:20,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:20,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 23:15:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:20,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 23:15:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:20,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 23:15:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:20,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:15:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:20,323 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-22 23:15:20,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:20,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482606917] [2023-11-22 23:15:20,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482606917] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:20,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287472412] [2023-11-22 23:15:20,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:20,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:20,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:20,324 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 23:15:20,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-22 23:15:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:20,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 23:15:20,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:20,651 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-22 23:15:20,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:15:20,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287472412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:15:20,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 23:15:20,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 23:15:20,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567689336] [2023-11-22 23:15:20,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:15:20,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:15:20,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:20,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:15:20,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:20,653 INFO L87 Difference]: Start difference. First operand 777 states and 1094 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:15:20,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:20,847 INFO L93 Difference]: Finished difference Result 1127 states and 1605 transitions. [2023-11-22 23:15:20,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:15:20,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 130 [2023-11-22 23:15:20,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:20,849 INFO L225 Difference]: With dead ends: 1127 [2023-11-22 23:15:20,849 INFO L226 Difference]: Without dead ends: 793 [2023-11-22 23:15:20,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:20,850 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:20,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:15:20,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2023-11-22 23:15:20,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 793. [2023-11-22 23:15:20,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 771 states have (on average 1.4033722438391698) internal successors, (1082), 773 states have internal predecessors, (1082), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 23:15:20,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1110 transitions. [2023-11-22 23:15:20,862 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1110 transitions. Word has length 130 [2023-11-22 23:15:20,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:20,863 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 1110 transitions. [2023-11-22 23:15:20,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:15:20,863 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1110 transitions. [2023-11-22 23:15:20,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-22 23:15:20,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:20,864 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:15:20,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-22 23:15:21,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-22 23:15:21,076 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:21,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:21,077 INFO L85 PathProgramCache]: Analyzing trace with hash -771477968, now seen corresponding path program 1 times [2023-11-22 23:15:21,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:21,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099098111] [2023-11-22 23:15:21,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:21,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:21,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 23:15:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:21,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 23:15:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:21,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 23:15:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:21,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:15:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:21,222 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-22 23:15:21,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:21,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099098111] [2023-11-22 23:15:21,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099098111] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:21,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205499410] [2023-11-22 23:15:21,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:21,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:21,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:21,224 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 23:15:21,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-22 23:15:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:21,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 23:15:21,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:21,536 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-22 23:15:21,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:15:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-22 23:15:21,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205499410] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:15:21,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:15:21,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 4] total 8 [2023-11-22 23:15:21,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664776728] [2023-11-22 23:15:21,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:15:21,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 23:15:21,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:21,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 23:15:21,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:15:21,571 INFO L87 Difference]: Start difference. First operand 793 states and 1110 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 1 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-22 23:15:22,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:22,019 INFO L93 Difference]: Finished difference Result 1586 states and 2222 transitions. [2023-11-22 23:15:22,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 23:15:22,019 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 1 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 130 [2023-11-22 23:15:22,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:22,021 INFO L225 Difference]: With dead ends: 1586 [2023-11-22 23:15:22,021 INFO L226 Difference]: Without dead ends: 796 [2023-11-22 23:15:22,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:15:22,023 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 1 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:22,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 628 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 23:15:22,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2023-11-22 23:15:22,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 796. [2023-11-22 23:15:22,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 774 states have (on average 1.4018087855297157) internal successors, (1085), 776 states have internal predecessors, (1085), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 23:15:22,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1113 transitions. [2023-11-22 23:15:22,037 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1113 transitions. Word has length 130 [2023-11-22 23:15:22,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:22,037 INFO L495 AbstractCegarLoop]: Abstraction has 796 states and 1113 transitions. [2023-11-22 23:15:22,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 1 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-22 23:15:22,037 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1113 transitions. [2023-11-22 23:15:22,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-22 23:15:22,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:22,039 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-22 23:15:22,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-22 23:15:22,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:22,251 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:22,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:22,251 INFO L85 PathProgramCache]: Analyzing trace with hash -142599476, now seen corresponding path program 2 times [2023-11-22 23:15:22,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:22,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787576627] [2023-11-22 23:15:22,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:22,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:22,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 23:15:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:22,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 23:15:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:22,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 23:15:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:22,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-22 23:15:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:22,399 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-11-22 23:15:22,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:22,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787576627] [2023-11-22 23:15:22,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787576627] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:22,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746568089] [2023-11-22 23:15:22,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 23:15:22,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:22,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:22,401 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 23:15:22,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-22 23:15:22,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 23:15:22,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 23:15:22,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 23:15:22,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:22,995 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-22 23:15:22,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:15:23,050 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-22 23:15:23,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746568089] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:15:23,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:15:23,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 7] total 14 [2023-11-22 23:15:23,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620779144] [2023-11-22 23:15:23,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:15:23,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-22 23:15:23,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:23,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-22 23:15:23,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-22 23:15:23,052 INFO L87 Difference]: Start difference. First operand 796 states and 1113 transitions. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 13 states have internal predecessors, (99), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 23:15:24,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:24,002 INFO L93 Difference]: Finished difference Result 1592 states and 2233 transitions. [2023-11-22 23:15:24,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-22 23:15:24,003 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 13 states have internal predecessors, (99), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 133 [2023-11-22 23:15:24,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:24,005 INFO L225 Difference]: With dead ends: 1592 [2023-11-22 23:15:24,005 INFO L226 Difference]: Without dead ends: 802 [2023-11-22 23:15:24,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 265 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2023-11-22 23:15:24,006 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 1 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:24,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1335 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-22 23:15:24,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2023-11-22 23:15:24,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 802. [2023-11-22 23:15:24,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 780 states have (on average 1.3987179487179486) internal successors, (1091), 782 states have internal predecessors, (1091), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 23:15:24,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1119 transitions. [2023-11-22 23:15:24,023 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1119 transitions. Word has length 133 [2023-11-22 23:15:24,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:24,024 INFO L495 AbstractCegarLoop]: Abstraction has 802 states and 1119 transitions. [2023-11-22 23:15:24,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 13 states have internal predecessors, (99), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 23:15:24,024 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1119 transitions. [2023-11-22 23:15:24,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-22 23:15:24,026 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:24,026 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-22 23:15:24,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-22 23:15:24,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-22 23:15:24,232 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:24,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:24,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1713431012, now seen corresponding path program 3 times [2023-11-22 23:15:24,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:24,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200551684] [2023-11-22 23:15:24,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:24,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:24,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:15:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:24,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 23:15:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:24,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 23:15:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:24,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 23:15:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-22 23:15:24,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:24,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200551684] [2023-11-22 23:15:24,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200551684] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:24,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350898084] [2023-11-22 23:15:24,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 23:15:24,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:24,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:24,431 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 23:15:24,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-22 23:15:25,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-22 23:15:25,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 23:15:25,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-22 23:15:25,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:25,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 152 [2023-11-22 23:15:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-22 23:15:25,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:15:25,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350898084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:15:25,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 23:15:25,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2023-11-22 23:15:25,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997020635] [2023-11-22 23:15:25,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:15:25,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 23:15:25,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:25,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 23:15:25,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-22 23:15:25,659 INFO L87 Difference]: Start difference. First operand 802 states and 1119 transitions. Second operand has 7 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-22 23:15:26,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:26,927 INFO L93 Difference]: Finished difference Result 1512 states and 2132 transitions. [2023-11-22 23:15:26,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 23:15:26,927 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 140 [2023-11-22 23:15:26,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:26,930 INFO L225 Difference]: With dead ends: 1512 [2023-11-22 23:15:26,930 INFO L226 Difference]: Without dead ends: 827 [2023-11-22 23:15:26,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-22 23:15:26,931 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 47 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:26,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 678 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-22 23:15:26,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2023-11-22 23:15:26,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 810. [2023-11-22 23:15:26,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 788 states have (on average 1.399746192893401) internal successors, (1103), 790 states have internal predecessors, (1103), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 23:15:26,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1131 transitions. [2023-11-22 23:15:26,948 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1131 transitions. Word has length 140 [2023-11-22 23:15:26,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:26,948 INFO L495 AbstractCegarLoop]: Abstraction has 810 states and 1131 transitions. [2023-11-22 23:15:26,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-22 23:15:26,949 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1131 transitions. [2023-11-22 23:15:26,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-22 23:15:26,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:26,950 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:15:26,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-22 23:15:27,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-22 23:15:27,163 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:27,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:27,163 INFO L85 PathProgramCache]: Analyzing trace with hash -435299066, now seen corresponding path program 1 times [2023-11-22 23:15:27,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:27,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365575462] [2023-11-22 23:15:27,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:27,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:27,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:15:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:27,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 23:15:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:27,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 23:15:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:27,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 23:15:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:27,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 23:15:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:27,317 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-22 23:15:27,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:27,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365575462] [2023-11-22 23:15:27,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365575462] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:27,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758568457] [2023-11-22 23:15:27,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:27,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:27,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:27,329 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 23:15:27,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-22 23:15:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:27,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 23:15:27,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:27,700 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-22 23:15:27,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:15:27,720 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-22 23:15:27,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758568457] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:15:27,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:15:27,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-11-22 23:15:27,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962971357] [2023-11-22 23:15:27,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:15:27,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 23:15:27,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:27,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 23:15:27,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:15:27,722 INFO L87 Difference]: Start difference. First operand 810 states and 1131 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 23:15:28,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:28,432 INFO L93 Difference]: Finished difference Result 1610 states and 2254 transitions. [2023-11-22 23:15:28,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 23:15:28,432 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 149 [2023-11-22 23:15:28,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:28,434 INFO L225 Difference]: With dead ends: 1610 [2023-11-22 23:15:28,435 INFO L226 Difference]: Without dead ends: 831 [2023-11-22 23:15:28,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:15:28,436 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 22 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:28,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 776 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 23:15:28,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2023-11-22 23:15:28,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 831. [2023-11-22 23:15:28,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 806 states have (on average 1.3945409429280398) internal successors, (1124), 808 states have internal predecessors, (1124), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-22 23:15:28,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1158 transitions. [2023-11-22 23:15:28,454 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1158 transitions. Word has length 149 [2023-11-22 23:15:28,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:28,454 INFO L495 AbstractCegarLoop]: Abstraction has 831 states and 1158 transitions. [2023-11-22 23:15:28,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 23:15:28,455 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1158 transitions. [2023-11-22 23:15:28,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-22 23:15:28,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:28,456 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-22 23:15:28,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-22 23:15:28,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-22 23:15:28,668 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:28,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:28,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1969211738, now seen corresponding path program 2 times [2023-11-22 23:15:28,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:28,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690713165] [2023-11-22 23:15:28,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:28,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:28,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:15:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:28,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 23:15:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:28,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 23:15:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:28,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 23:15:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:28,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 23:15:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:28,823 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-11-22 23:15:28,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:28,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690713165] [2023-11-22 23:15:28,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690713165] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:28,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357158523] [2023-11-22 23:15:28,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 23:15:28,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:28,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:28,825 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 23:15:28,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-22 23:15:29,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 23:15:29,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 23:15:29,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 23:15:29,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:29,511 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-22 23:15:29,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:15:29,578 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-22 23:15:29,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357158523] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:15:29,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:15:29,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 14 [2023-11-22 23:15:29,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168475473] [2023-11-22 23:15:29,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:15:29,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-22 23:15:29,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:29,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-22 23:15:29,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-22 23:15:29,580 INFO L87 Difference]: Start difference. First operand 831 states and 1158 transitions. Second operand has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 13 states have internal predecessors, (121), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 23:15:30,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:30,416 INFO L93 Difference]: Finished difference Result 1658 states and 2319 transitions. [2023-11-22 23:15:30,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-22 23:15:30,416 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 13 states have internal predecessors, (121), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 158 [2023-11-22 23:15:30,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:30,419 INFO L225 Difference]: With dead ends: 1658 [2023-11-22 23:15:30,419 INFO L226 Difference]: Without dead ends: 879 [2023-11-22 23:15:30,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 315 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-22 23:15:30,420 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 73 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:30,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1091 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-22 23:15:30,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2023-11-22 23:15:30,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 873. [2023-11-22 23:15:30,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 842 states have (on average 1.3847980997624703) internal successors, (1166), 844 states have internal predecessors, (1166), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-22 23:15:30,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1212 transitions. [2023-11-22 23:15:30,438 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1212 transitions. Word has length 158 [2023-11-22 23:15:30,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:30,438 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1212 transitions. [2023-11-22 23:15:30,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 13 states have internal predecessors, (121), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 23:15:30,438 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1212 transitions. [2023-11-22 23:15:30,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 23:15:30,440 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:30,440 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:15:30,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-22 23:15:30,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:30,654 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:30,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:30,654 INFO L85 PathProgramCache]: Analyzing trace with hash -2025161994, now seen corresponding path program 3 times [2023-11-22 23:15:30,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:30,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80109635] [2023-11-22 23:15:30,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:30,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:30,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:15:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:30,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 23:15:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:30,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 23:15:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:30,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 23:15:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:30,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 23:15:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:30,929 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-11-22 23:15:30,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:30,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80109635] [2023-11-22 23:15:30,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80109635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:15:30,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:15:30,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 23:15:30,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808179893] [2023-11-22 23:15:30,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:15:30,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 23:15:30,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:30,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 23:15:30,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:30,931 INFO L87 Difference]: Start difference. First operand 873 states and 1212 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:15:31,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:31,632 INFO L93 Difference]: Finished difference Result 2319 states and 3267 transitions. [2023-11-22 23:15:31,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 23:15:31,632 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 176 [2023-11-22 23:15:31,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:31,636 INFO L225 Difference]: With dead ends: 2319 [2023-11-22 23:15:31,636 INFO L226 Difference]: Without dead ends: 1641 [2023-11-22 23:15:31,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-22 23:15:31,638 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 98 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:31,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 500 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 23:15:31,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2023-11-22 23:15:31,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1081. [2023-11-22 23:15:31,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1050 states have (on average 1.3695238095238096) internal successors, (1438), 1052 states have internal predecessors, (1438), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-22 23:15:31,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1484 transitions. [2023-11-22 23:15:31,658 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1484 transitions. Word has length 176 [2023-11-22 23:15:31,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:31,658 INFO L495 AbstractCegarLoop]: Abstraction has 1081 states and 1484 transitions. [2023-11-22 23:15:31,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:15:31,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1484 transitions. [2023-11-22 23:15:31,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 23:15:31,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:31,661 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:15:31,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-22 23:15:31,661 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:31,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:31,661 INFO L85 PathProgramCache]: Analyzing trace with hash 138344188, now seen corresponding path program 1 times [2023-11-22 23:15:31,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:31,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383573762] [2023-11-22 23:15:31,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:31,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:31,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:15:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:31,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 23:15:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:31,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 23:15:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:31,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 23:15:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:31,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 23:15:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:31,893 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-22 23:15:31,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:31,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383573762] [2023-11-22 23:15:31,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383573762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:15:31,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:15:31,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 23:15:31,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193691625] [2023-11-22 23:15:31,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:15:31,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 23:15:31,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:31,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 23:15:31,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:31,895 INFO L87 Difference]: Start difference. First operand 1081 states and 1484 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:15:32,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:32,472 INFO L93 Difference]: Finished difference Result 2495 states and 3491 transitions. [2023-11-22 23:15:32,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 23:15:32,481 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 176 [2023-11-22 23:15:32,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:32,485 INFO L225 Difference]: With dead ends: 2495 [2023-11-22 23:15:32,485 INFO L226 Difference]: Without dead ends: 1609 [2023-11-22 23:15:32,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-22 23:15:32,486 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 50 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:32,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 516 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 23:15:32,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2023-11-22 23:15:32,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1401. [2023-11-22 23:15:32,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1370 states have (on average 1.3766423357664233) internal successors, (1886), 1372 states have internal predecessors, (1886), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-22 23:15:32,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1932 transitions. [2023-11-22 23:15:32,509 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1932 transitions. Word has length 176 [2023-11-22 23:15:32,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:32,509 INFO L495 AbstractCegarLoop]: Abstraction has 1401 states and 1932 transitions. [2023-11-22 23:15:32,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:15:32,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1932 transitions. [2023-11-22 23:15:32,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 23:15:32,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:32,512 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:15:32,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-22 23:15:32,512 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:32,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:32,513 INFO L85 PathProgramCache]: Analyzing trace with hash -279052418, now seen corresponding path program 1 times [2023-11-22 23:15:32,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:32,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385716149] [2023-11-22 23:15:32,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:32,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:32,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:15:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:32,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 23:15:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:32,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 23:15:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:32,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 23:15:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:32,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 23:15:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:32,708 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-22 23:15:32,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:32,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385716149] [2023-11-22 23:15:32,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385716149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:15:32,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:15:32,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:15:32,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099513274] [2023-11-22 23:15:32,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:15:32,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:15:32,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:32,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:15:32,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:15:32,710 INFO L87 Difference]: Start difference. First operand 1401 states and 1932 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:15:33,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:33,215 INFO L93 Difference]: Finished difference Result 2767 states and 3859 transitions. [2023-11-22 23:15:33,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 23:15:33,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 176 [2023-11-22 23:15:33,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:33,219 INFO L225 Difference]: With dead ends: 2767 [2023-11-22 23:15:33,219 INFO L226 Difference]: Without dead ends: 1561 [2023-11-22 23:15:33,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:33,220 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 13 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:33,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 612 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 23:15:33,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2023-11-22 23:15:33,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1433. [2023-11-22 23:15:33,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1402 states have (on average 1.3680456490727533) internal successors, (1918), 1404 states have internal predecessors, (1918), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-22 23:15:33,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1964 transitions. [2023-11-22 23:15:33,245 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1964 transitions. Word has length 176 [2023-11-22 23:15:33,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:33,246 INFO L495 AbstractCegarLoop]: Abstraction has 1433 states and 1964 transitions. [2023-11-22 23:15:33,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:15:33,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1964 transitions. [2023-11-22 23:15:33,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 23:15:33,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:33,249 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:15:33,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-22 23:15:33,249 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:33,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:33,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1682522240, now seen corresponding path program 1 times [2023-11-22 23:15:33,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:33,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248376137] [2023-11-22 23:15:33,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:33,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:33,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:15:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:33,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 23:15:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:33,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 23:15:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:33,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 23:15:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:33,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 23:15:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:33,403 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-22 23:15:33,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:33,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248376137] [2023-11-22 23:15:33,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248376137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:15:33,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:15:33,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:15:33,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756882805] [2023-11-22 23:15:33,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:15:33,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:15:33,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:33,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:15:33,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:15:33,407 INFO L87 Difference]: Start difference. First operand 1433 states and 1964 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:15:34,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:34,007 INFO L93 Difference]: Finished difference Result 2719 states and 3747 transitions. [2023-11-22 23:15:34,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 23:15:34,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 176 [2023-11-22 23:15:34,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:34,011 INFO L225 Difference]: With dead ends: 2719 [2023-11-22 23:15:34,012 INFO L226 Difference]: Without dead ends: 1481 [2023-11-22 23:15:34,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:34,013 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 4 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:34,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 611 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 23:15:34,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2023-11-22 23:15:34,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1465. [2023-11-22 23:15:34,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1434 states have (on average 1.3598326359832635) internal successors, (1950), 1436 states have internal predecessors, (1950), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-22 23:15:34,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 1996 transitions. [2023-11-22 23:15:34,034 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 1996 transitions. Word has length 176 [2023-11-22 23:15:34,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:34,035 INFO L495 AbstractCegarLoop]: Abstraction has 1465 states and 1996 transitions. [2023-11-22 23:15:34,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:15:34,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 1996 transitions. [2023-11-22 23:15:34,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 23:15:34,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:34,038 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:15:34,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-22 23:15:34,038 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:34,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:34,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1140308476, now seen corresponding path program 1 times [2023-11-22 23:15:34,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:34,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858836641] [2023-11-22 23:15:34,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:34,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:34,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:15:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:34,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 23:15:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:34,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 23:15:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:34,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 23:15:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:34,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 23:15:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:34,222 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-11-22 23:15:34,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:34,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858836641] [2023-11-22 23:15:34,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858836641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:15:34,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:15:34,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:15:34,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132984680] [2023-11-22 23:15:34,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:15:34,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:15:34,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:34,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:15:34,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:15:34,224 INFO L87 Difference]: Start difference. First operand 1465 states and 1996 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:15:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:34,721 INFO L93 Difference]: Finished difference Result 2703 states and 3683 transitions. [2023-11-22 23:15:34,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 23:15:34,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 176 [2023-11-22 23:15:34,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:34,725 INFO L225 Difference]: With dead ends: 2703 [2023-11-22 23:15:34,725 INFO L226 Difference]: Without dead ends: 1433 [2023-11-22 23:15:34,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:34,726 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 10 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:34,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 609 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 23:15:34,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2023-11-22 23:15:34,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1417. [2023-11-22 23:15:34,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1386 states have (on average 1.3376623376623376) internal successors, (1854), 1388 states have internal predecessors, (1854), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-22 23:15:34,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 1900 transitions. [2023-11-22 23:15:34,746 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 1900 transitions. Word has length 176 [2023-11-22 23:15:34,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:34,747 INFO L495 AbstractCegarLoop]: Abstraction has 1417 states and 1900 transitions. [2023-11-22 23:15:34,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:15:34,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 1900 transitions. [2023-11-22 23:15:34,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 23:15:34,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:34,749 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:15:34,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-22 23:15:34,750 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:34,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:34,750 INFO L85 PathProgramCache]: Analyzing trace with hash -648300036, now seen corresponding path program 2 times [2023-11-22 23:15:34,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:34,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892524940] [2023-11-22 23:15:34,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:34,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:34,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:15:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:34,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 23:15:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:34,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 23:15:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:34,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 23:15:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:34,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 23:15:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:34,959 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-11-22 23:15:34,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:34,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892524940] [2023-11-22 23:15:34,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892524940] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:15:34,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:15:34,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 23:15:34,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625987826] [2023-11-22 23:15:34,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:15:34,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 23:15:34,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:34,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 23:15:34,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:34,962 INFO L87 Difference]: Start difference. First operand 1417 states and 1900 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 5 states have internal predecessors, (116), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:15:35,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:35,563 INFO L93 Difference]: Finished difference Result 3167 states and 4227 transitions. [2023-11-22 23:15:35,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 23:15:35,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 5 states have internal predecessors, (116), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 176 [2023-11-22 23:15:35,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:35,567 INFO L225 Difference]: With dead ends: 3167 [2023-11-22 23:15:35,567 INFO L226 Difference]: Without dead ends: 1945 [2023-11-22 23:15:35,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-22 23:15:35,569 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 72 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:35,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 605 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 23:15:35,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2023-11-22 23:15:35,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1513. [2023-11-22 23:15:35,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1482 states have (on average 1.3049932523616734) internal successors, (1934), 1484 states have internal predecessors, (1934), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-22 23:15:35,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 1980 transitions. [2023-11-22 23:15:35,588 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 1980 transitions. Word has length 176 [2023-11-22 23:15:35,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:35,589 INFO L495 AbstractCegarLoop]: Abstraction has 1513 states and 1980 transitions. [2023-11-22 23:15:35,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 5 states have internal predecessors, (116), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:15:35,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 1980 transitions. [2023-11-22 23:15:35,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 23:15:35,591 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:35,592 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-22 23:15:35,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-22 23:15:35,592 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:35,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:35,592 INFO L85 PathProgramCache]: Analyzing trace with hash 11231486, now seen corresponding path program 1 times [2023-11-22 23:15:35,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:35,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687810442] [2023-11-22 23:15:35,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:35,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:35,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:15:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:35,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 23:15:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:35,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 23:15:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:35,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 23:15:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:35,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 23:15:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:35,729 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-11-22 23:15:35,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:35,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687810442] [2023-11-22 23:15:35,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687810442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:15:35,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:15:35,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:15:35,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588763154] [2023-11-22 23:15:35,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:15:35,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:15:35,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:35,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:15:35,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:15:35,732 INFO L87 Difference]: Start difference. First operand 1513 states and 1980 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:15:36,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:36,260 INFO L93 Difference]: Finished difference Result 3119 states and 4115 transitions. [2023-11-22 23:15:36,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 23:15:36,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 176 [2023-11-22 23:15:36,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:36,264 INFO L225 Difference]: With dead ends: 3119 [2023-11-22 23:15:36,264 INFO L226 Difference]: Without dead ends: 1801 [2023-11-22 23:15:36,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:15:36,266 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 15 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:36,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 643 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 23:15:36,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2023-11-22 23:15:36,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1545. [2023-11-22 23:15:36,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1514 states have (on average 1.2879788639365919) internal successors, (1950), 1516 states have internal predecessors, (1950), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-22 23:15:36,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 1996 transitions. [2023-11-22 23:15:36,286 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 1996 transitions. Word has length 176 [2023-11-22 23:15:36,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:36,287 INFO L495 AbstractCegarLoop]: Abstraction has 1545 states and 1996 transitions. [2023-11-22 23:15:36,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:15:36,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 1996 transitions. [2023-11-22 23:15:36,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 23:15:36,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:36,289 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:15:36,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-22 23:15:36,290 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:36,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:36,290 INFO L85 PathProgramCache]: Analyzing trace with hash -832774016, now seen corresponding path program 1 times [2023-11-22 23:15:36,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:36,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676812550] [2023-11-22 23:15:36,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:36,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:36,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:15:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:36,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 23:15:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:36,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 23:15:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:36,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 23:15:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:36,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 23:15:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-11-22 23:15:36,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:36,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676812550] [2023-11-22 23:15:36,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676812550] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:36,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508828115] [2023-11-22 23:15:36,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:36,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:36,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:36,450 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 23:15:36,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-22 23:15:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:36,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 23:15:36,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:36,948 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-11-22 23:15:36,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:15:36,977 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-11-22 23:15:36,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508828115] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:15:36,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:15:36,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2023-11-22 23:15:36,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255572041] [2023-11-22 23:15:36,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:15:36,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 23:15:36,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:36,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 23:15:36,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-22 23:15:36,979 INFO L87 Difference]: Start difference. First operand 1545 states and 1996 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 23:15:37,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:37,581 INFO L93 Difference]: Finished difference Result 3013 states and 3900 transitions. [2023-11-22 23:15:37,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 23:15:37,581 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 176 [2023-11-22 23:15:37,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:37,585 INFO L225 Difference]: With dead ends: 3013 [2023-11-22 23:15:37,585 INFO L226 Difference]: Without dead ends: 1573 [2023-11-22 23:15:37,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-22 23:15:37,586 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 49 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:37,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 781 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 23:15:37,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2023-11-22 23:15:37,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1573. [2023-11-22 23:15:37,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1573 states, 1538 states have (on average 1.2860858257477243) internal successors, (1978), 1540 states have internal predecessors, (1978), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-22 23:15:37,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2032 transitions. [2023-11-22 23:15:37,608 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2032 transitions. Word has length 176 [2023-11-22 23:15:37,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:37,608 INFO L495 AbstractCegarLoop]: Abstraction has 1573 states and 2032 transitions. [2023-11-22 23:15:37,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 23:15:37,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2032 transitions. [2023-11-22 23:15:37,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-22 23:15:37,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:37,611 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-22 23:15:37,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-22 23:15:37,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:37,825 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:37,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:37,825 INFO L85 PathProgramCache]: Analyzing trace with hash 2050485376, now seen corresponding path program 2 times [2023-11-22 23:15:37,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:37,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571219789] [2023-11-22 23:15:37,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:37,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:38,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:15:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:38,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 23:15:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:38,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 23:15:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:38,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-22 23:15:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:38,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 23:15:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:38,058 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-11-22 23:15:38,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:38,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571219789] [2023-11-22 23:15:38,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571219789] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:38,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377372192] [2023-11-22 23:15:38,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 23:15:38,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:38,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:38,060 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 23:15:38,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-22 23:15:38,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 23:15:38,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 23:15:38,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 23:15:38,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:38,863 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-11-22 23:15:38,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:15:38,925 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-11-22 23:15:38,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377372192] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:15:38,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:15:38,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 13 [2023-11-22 23:15:38,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101109311] [2023-11-22 23:15:38,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:15:38,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-22 23:15:38,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:38,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-22 23:15:38,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-11-22 23:15:38,927 INFO L87 Difference]: Start difference. First operand 1573 states and 2032 transitions. Second operand has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 23:15:39,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:39,774 INFO L93 Difference]: Finished difference Result 3034 states and 3926 transitions. [2023-11-22 23:15:39,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-22 23:15:39,775 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 188 [2023-11-22 23:15:39,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:39,778 INFO L225 Difference]: With dead ends: 3034 [2023-11-22 23:15:39,778 INFO L226 Difference]: Without dead ends: 1594 [2023-11-22 23:15:39,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 377 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-11-22 23:15:39,780 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 71 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:39,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 963 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-22 23:15:39,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2023-11-22 23:15:39,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1594. [2023-11-22 23:15:39,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1556 states have (on average 1.2847043701799485) internal successors, (1999), 1558 states have internal predecessors, (1999), 30 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-22 23:15:39,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2059 transitions. [2023-11-22 23:15:39,803 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2059 transitions. Word has length 188 [2023-11-22 23:15:39,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:39,803 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2059 transitions. [2023-11-22 23:15:39,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 23:15:39,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2059 transitions. [2023-11-22 23:15:39,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-11-22 23:15:39,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:39,806 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-22 23:15:39,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-22 23:15:40,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-22 23:15:40,021 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:40,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:40,021 INFO L85 PathProgramCache]: Analyzing trace with hash 391617168, now seen corresponding path program 3 times [2023-11-22 23:15:40,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:40,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527971428] [2023-11-22 23:15:40,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:40,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:40,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:15:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:40,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 23:15:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:40,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 23:15:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:40,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 23:15:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:40,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 23:15:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:40,240 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-11-22 23:15:40,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:40,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527971428] [2023-11-22 23:15:40,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527971428] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:40,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750481300] [2023-11-22 23:15:40,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 23:15:40,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:40,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:40,242 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 23:15:40,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-22 23:15:40,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-22 23:15:40,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 23:15:40,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-22 23:15:41,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:41,043 INFO L349 Elim1Store]: treesize reduction 93, result has 14.7 percent of original size [2023-11-22 23:15:41,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 36 [2023-11-22 23:15:41,096 INFO L349 Elim1Store]: treesize reduction 156, result has 9.3 percent of original size [2023-11-22 23:15:41,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 36 [2023-11-22 23:15:41,928 INFO L349 Elim1Store]: treesize reduction 16, result has 90.5 percent of original size [2023-11-22 23:15:41,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 195 [2023-11-22 23:15:43,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 161 [2023-11-22 23:15:44,568 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-22 23:15:44,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 96 [2023-11-22 23:15:44,917 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2023-11-22 23:15:44,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:15:44,989 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7911 (Array Int Int)) (v_ArrVal_7912 (Array Int Int))) (not (= |c_ULTIMATE.start_main_~cpu1Reads_issued~0#1| (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#sharedMemory~0#1.base| v_ArrVal_7912) |c_ULTIMATE.start_main_~#wrBuffer0~0#1.base| v_ArrVal_7911) |c_ULTIMATE.start_main_~#litmus_input~0#1.base|) (+ 164 |c_ULTIMATE.start_main_~#litmus_input~0#1.offset|))))) is different from false [2023-11-22 23:15:44,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750481300] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:44,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-22 23:15:44,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 17 [2023-11-22 23:15:44,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530070087] [2023-11-22 23:15:44,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-22 23:15:44,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-22 23:15:44,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:44,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-22 23:15:44,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=291, Unknown=1, NotChecked=34, Total=380 [2023-11-22 23:15:44,993 INFO L87 Difference]: Start difference. First operand 1594 states and 2059 transitions. Second operand has 17 states, 15 states have (on average 13.8) internal successors, (207), 15 states have internal predecessors, (207), 4 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-22 23:15:51,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:51,044 INFO L93 Difference]: Finished difference Result 18024 states and 23380 transitions. [2023-11-22 23:15:51,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-22 23:15:51,044 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 13.8) internal successors, (207), 15 states have internal predecessors, (207), 4 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 197 [2023-11-22 23:15:51,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:51,073 INFO L225 Difference]: With dead ends: 18024 [2023-11-22 23:15:51,074 INFO L226 Difference]: Without dead ends: 16662 [2023-11-22 23:15:51,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 293 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=239, Invalid=1404, Unknown=1, NotChecked=78, Total=1722 [2023-11-22 23:15:51,080 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 1184 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 1822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:51,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 2483 Invalid, 1822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-22 23:15:51,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16662 states. [2023-11-22 23:15:51,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16662 to 2512. [2023-11-22 23:15:51,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2512 states, 2462 states have (on average 1.3078797725426483) internal successors, (3220), 2468 states have internal predecessors, (3220), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 35 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-22 23:15:51,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2512 states to 2512 states and 3296 transitions. [2023-11-22 23:15:51,188 INFO L78 Accepts]: Start accepts. Automaton has 2512 states and 3296 transitions. Word has length 197 [2023-11-22 23:15:51,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:51,189 INFO L495 AbstractCegarLoop]: Abstraction has 2512 states and 3296 transitions. [2023-11-22 23:15:51,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 13.8) internal successors, (207), 15 states have internal predecessors, (207), 4 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-22 23:15:51,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2512 states and 3296 transitions. [2023-11-22 23:15:51,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-22 23:15:51,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:51,193 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:15:51,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-22 23:15:51,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-22 23:15:51,407 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:51,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:51,407 INFO L85 PathProgramCache]: Analyzing trace with hash -273190284, now seen corresponding path program 1 times [2023-11-22 23:15:51,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:51,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159515901] [2023-11-22 23:15:51,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:51,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:51,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:15:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:51,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 23:15:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:51,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 23:15:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:51,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 23:15:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:51,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-22 23:15:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:51,625 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 83 proven. 28 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-11-22 23:15:51,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:51,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159515901] [2023-11-22 23:15:51,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159515901] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:51,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075114005] [2023-11-22 23:15:51,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:51,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:51,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:51,628 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 23:15:51,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-22 23:15:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:52,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 23:15:52,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:52,178 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 92 proven. 19 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-11-22 23:15:52,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:15:52,237 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 92 proven. 19 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-11-22 23:15:52,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075114005] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:15:52,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:15:52,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2023-11-22 23:15:52,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843401106] [2023-11-22 23:15:52,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:15:52,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 23:15:52,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:52,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 23:15:52,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 23:15:52,239 INFO L87 Difference]: Start difference. First operand 2512 states and 3296 transitions. Second operand has 9 states, 9 states have (on average 20.88888888888889) internal successors, (188), 8 states have internal predecessors, (188), 1 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:15:52,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:52,986 INFO L93 Difference]: Finished difference Result 4190 states and 5484 transitions. [2023-11-22 23:15:52,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 23:15:52,986 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.88888888888889) internal successors, (188), 8 states have internal predecessors, (188), 1 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 209 [2023-11-22 23:15:52,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:52,991 INFO L225 Difference]: With dead ends: 4190 [2023-11-22 23:15:52,992 INFO L226 Difference]: Without dead ends: 3512 [2023-11-22 23:15:52,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 423 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-22 23:15:52,993 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 329 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:52,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 746 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 23:15:52,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2023-11-22 23:15:53,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 2485. [2023-11-22 23:15:53,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 2435 states have (on average 1.3002053388090349) internal successors, (3166), 2441 states have internal predecessors, (3166), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 35 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-22 23:15:53,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 3242 transitions. [2023-11-22 23:15:53,052 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 3242 transitions. Word has length 209 [2023-11-22 23:15:53,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:53,053 INFO L495 AbstractCegarLoop]: Abstraction has 2485 states and 3242 transitions. [2023-11-22 23:15:53,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.88888888888889) internal successors, (188), 8 states have internal predecessors, (188), 1 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:15:53,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 3242 transitions. [2023-11-22 23:15:53,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-11-22 23:15:53,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:53,057 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2023-11-22 23:15:53,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-22 23:15:53,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:53,270 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:53,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:53,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1519009012, now seen corresponding path program 2 times [2023-11-22 23:15:53,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:53,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323058359] [2023-11-22 23:15:53,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:53,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:53,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:15:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:53,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 23:15:53,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:53,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 23:15:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:53,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 23:15:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:53,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-22 23:15:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:53,482 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2023-11-22 23:15:53,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:53,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323058359] [2023-11-22 23:15:53,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323058359] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:53,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860243858] [2023-11-22 23:15:53,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 23:15:53,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:53,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:53,484 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 23:15:53,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-22 23:15:54,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 23:15:54,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 23:15:54,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 925 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 23:15:54,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 92 proven. 57 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-11-22 23:15:54,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:15:54,527 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 92 proven. 57 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-11-22 23:15:54,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860243858] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:15:54,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:15:54,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-22 23:15:54,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544269449] [2023-11-22 23:15:54,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:15:54,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-22 23:15:54,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:54,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-22 23:15:54,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-11-22 23:15:54,530 INFO L87 Difference]: Start difference. First operand 2485 states and 3242 transitions. Second operand has 16 states, 16 states have (on average 18.3125) internal successors, (293), 15 states have internal predecessors, (293), 1 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:15:56,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:56,319 INFO L93 Difference]: Finished difference Result 6204 states and 7997 transitions. [2023-11-22 23:15:56,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-22 23:15:56,319 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 18.3125) internal successors, (293), 15 states have internal predecessors, (293), 1 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 215 [2023-11-22 23:15:56,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:56,326 INFO L225 Difference]: With dead ends: 6204 [2023-11-22 23:15:56,327 INFO L226 Difference]: Without dead ends: 5534 [2023-11-22 23:15:56,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 438 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=214, Invalid=598, Unknown=0, NotChecked=0, Total=812 [2023-11-22 23:15:56,330 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 595 mSDsluCounter, 2146 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:56,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 2424 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-22 23:15:56,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5534 states. [2023-11-22 23:15:56,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5534 to 2471. [2023-11-22 23:15:56,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2471 states, 2421 states have (on average 1.2961586121437423) internal successors, (3138), 2427 states have internal predecessors, (3138), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 35 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-22 23:15:56,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 3214 transitions. [2023-11-22 23:15:56,393 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 3214 transitions. Word has length 215 [2023-11-22 23:15:56,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:56,394 INFO L495 AbstractCegarLoop]: Abstraction has 2471 states and 3214 transitions. [2023-11-22 23:15:56,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.3125) internal successors, (293), 15 states have internal predecessors, (293), 1 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:15:56,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 3214 transitions. [2023-11-22 23:15:56,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-11-22 23:15:56,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:56,398 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:15:56,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-22 23:15:56,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:56,612 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:56,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:56,612 INFO L85 PathProgramCache]: Analyzing trace with hash -2072012996, now seen corresponding path program 3 times [2023-11-22 23:15:56,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:56,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136879527] [2023-11-22 23:15:56,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:56,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:15:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 23:15:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 23:15:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 23:15:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-22 23:15:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,770 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 100 proven. 23 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2023-11-22 23:15:56,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:56,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136879527] [2023-11-22 23:15:56,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136879527] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:56,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125205054] [2023-11-22 23:15:56,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 23:15:56,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:15:56,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:15:56,772 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 23:15:56,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-22 23:15:57,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-22 23:15:57,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 23:15:57,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-22 23:15:57,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:15:57,663 INFO L349 Elim1Store]: treesize reduction 172, result has 10.9 percent of original size [2023-11-22 23:15:57,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 60 [2023-11-22 23:15:58,421 INFO L349 Elim1Store]: treesize reduction 44, result has 32.3 percent of original size [2023-11-22 23:15:58,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 39 [2023-11-22 23:15:58,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 161 [2023-11-22 23:15:59,551 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-22 23:15:59,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 96 [2023-11-22 23:15:59,924 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2023-11-22 23:15:59,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:15:59,984 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9117 (Array Int Int)) (v_ArrVal_9118 (Array Int Int))) (not (= |c_ULTIMATE.start_main_~cpu1Reads_issued~0#1| (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#sharedMemory~0#1.base| v_ArrVal_9118) |c_ULTIMATE.start_main_~#wrBuffer1~0#1.base| v_ArrVal_9117) |c_ULTIMATE.start_main_~#litmus_input~0#1.base|) (+ 164 |c_ULTIMATE.start_main_~#litmus_input~0#1.offset|))))) is different from false [2023-11-22 23:15:59,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125205054] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:15:59,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-22 23:15:59,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 12] total 14 [2023-11-22 23:15:59,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159914245] [2023-11-22 23:15:59,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-22 23:15:59,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-22 23:15:59,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:59,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-22 23:15:59,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=205, Unknown=1, NotChecked=28, Total=272 [2023-11-22 23:15:59,988 INFO L87 Difference]: Start difference. First operand 2471 states and 3214 transitions. Second operand has 14 states, 12 states have (on average 14.75) internal successors, (177), 12 states have internal predecessors, (177), 4 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-22 23:16:05,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:16:05,858 INFO L93 Difference]: Finished difference Result 11697 states and 15264 transitions. [2023-11-22 23:16:05,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-22 23:16:05,858 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 14.75) internal successors, (177), 12 states have internal predecessors, (177), 4 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 223 [2023-11-22 23:16:05,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:16:05,868 INFO L225 Difference]: With dead ends: 11697 [2023-11-22 23:16:05,869 INFO L226 Difference]: Without dead ends: 9567 [2023-11-22 23:16:05,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 342 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=156, Invalid=969, Unknown=1, NotChecked=64, Total=1190 [2023-11-22 23:16:05,873 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 488 mSDsluCounter, 3429 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 3872 SdHoareTripleChecker+Invalid, 2423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-22 23:16:05,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 3872 Invalid, 2423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-22 23:16:05,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9567 states. [2023-11-22 23:16:05,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9567 to 3341. [2023-11-22 23:16:05,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3341 states, 3272 states have (on average 1.2970660146699267) internal successors, (4244), 3296 states have internal predecessors, (4244), 56 states have call successors, (56), 12 states have call predecessors, (56), 12 states have return successors, (56), 36 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-22 23:16:05,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3341 states to 3341 states and 4356 transitions. [2023-11-22 23:16:05,982 INFO L78 Accepts]: Start accepts. Automaton has 3341 states and 4356 transitions. Word has length 223 [2023-11-22 23:16:05,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:16:05,983 INFO L495 AbstractCegarLoop]: Abstraction has 3341 states and 4356 transitions. [2023-11-22 23:16:05,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 14.75) internal successors, (177), 12 states have internal predecessors, (177), 4 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-22 23:16:05,983 INFO L276 IsEmpty]: Start isEmpty. Operand 3341 states and 4356 transitions. [2023-11-22 23:16:05,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-11-22 23:16:05,988 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:16:05,989 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-22 23:16:06,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-22 23:16:06,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:16:06,202 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:16:06,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:16:06,202 INFO L85 PathProgramCache]: Analyzing trace with hash 487765834, now seen corresponding path program 1 times [2023-11-22 23:16:06,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:16:06,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945674980] [2023-11-22 23:16:06,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:16:06,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:16:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:06,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:16:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:06,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 23:16:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:06,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 23:16:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:06,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 23:16:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:06,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 23:16:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 103 proven. 42 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-11-22 23:16:06,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:16:06,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945674980] [2023-11-22 23:16:06,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945674980] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:16:06,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032308918] [2023-11-22 23:16:06,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:16:06,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:16:06,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:16:06,449 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 23:16:06,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-22 23:16:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:07,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 23:16:07,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:16:07,103 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 112 proven. 33 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-11-22 23:16:07,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:16:07,189 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 112 proven. 33 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-11-22 23:16:07,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032308918] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:16:07,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:16:07,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 10 [2023-11-22 23:16:07,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810573009] [2023-11-22 23:16:07,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:16:07,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 23:16:07,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:16:07,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 23:16:07,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-22 23:16:07,191 INFO L87 Difference]: Start difference. First operand 3341 states and 4356 transitions. Second operand has 10 states, 10 states have (on average 20.5) internal successors, (205), 8 states have internal predecessors, (205), 1 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:16:08,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:16:08,264 INFO L93 Difference]: Finished difference Result 4023 states and 5227 transitions. [2023-11-22 23:16:08,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 23:16:08,265 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.5) internal successors, (205), 8 states have internal predecessors, (205), 1 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 226 [2023-11-22 23:16:08,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:16:08,269 INFO L225 Difference]: With dead ends: 4023 [2023-11-22 23:16:08,269 INFO L226 Difference]: Without dead ends: 3357 [2023-11-22 23:16:08,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 456 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-22 23:16:08,270 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 152 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:16:08,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1239 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-22 23:16:08,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2023-11-22 23:16:08,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 2488. [2023-11-22 23:16:08,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 2419 states have (on average 1.291442744935924) internal successors, (3124), 2443 states have internal predecessors, (3124), 56 states have call successors, (56), 12 states have call predecessors, (56), 12 states have return successors, (56), 36 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-22 23:16:08,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 3236 transitions. [2023-11-22 23:16:08,352 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 3236 transitions. Word has length 226 [2023-11-22 23:16:08,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:16:08,352 INFO L495 AbstractCegarLoop]: Abstraction has 2488 states and 3236 transitions. [2023-11-22 23:16:08,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.5) internal successors, (205), 8 states have internal predecessors, (205), 1 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:16:08,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 3236 transitions. [2023-11-22 23:16:08,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-11-22 23:16:08,356 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:16:08,356 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:16:08,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-22 23:16:08,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-22 23:16:08,564 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:16:08,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:16:08,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1840151998, now seen corresponding path program 1 times [2023-11-22 23:16:08,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:16:08,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531591479] [2023-11-22 23:16:08,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:16:08,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:16:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:08,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:16:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:08,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 23:16:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:08,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 23:16:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:08,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 23:16:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:08,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 23:16:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-11-22 23:16:08,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:16:08,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531591479] [2023-11-22 23:16:08,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531591479] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:16:08,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485152719] [2023-11-22 23:16:08,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:16:08,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:16:08,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:16:08,830 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 23:16:08,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-22 23:16:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:09,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 23:16:09,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:16:09,519 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-11-22 23:16:09,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:16:09,666 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-11-22 23:16:09,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485152719] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:16:09,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:16:09,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 14 [2023-11-22 23:16:09,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998528281] [2023-11-22 23:16:09,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:16:09,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-22 23:16:09,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:16:09,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-22 23:16:09,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-11-22 23:16:09,669 INFO L87 Difference]: Start difference. First operand 2488 states and 3236 transitions. Second operand has 14 states, 14 states have (on average 19.357142857142858) internal successors, (271), 12 states have internal predecessors, (271), 1 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:16:10,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:16:10,756 INFO L93 Difference]: Finished difference Result 9581 states and 12247 transitions. [2023-11-22 23:16:10,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-22 23:16:10,757 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 19.357142857142858) internal successors, (271), 12 states have internal predecessors, (271), 1 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 232 [2023-11-22 23:16:10,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:16:10,768 INFO L225 Difference]: With dead ends: 9581 [2023-11-22 23:16:10,768 INFO L226 Difference]: Without dead ends: 9575 [2023-11-22 23:16:10,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 465 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-11-22 23:16:10,771 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 340 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-22 23:16:10,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 974 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-22 23:16:10,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9575 states. [2023-11-22 23:16:10,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9575 to 7704. [2023-11-22 23:16:10,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7704 states, 7635 states have (on average 1.280943025540275) internal successors, (9780), 7659 states have internal predecessors, (9780), 56 states have call successors, (56), 12 states have call predecessors, (56), 12 states have return successors, (56), 36 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-22 23:16:10,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7704 states to 7704 states and 9892 transitions. [2023-11-22 23:16:10,939 INFO L78 Accepts]: Start accepts. Automaton has 7704 states and 9892 transitions. Word has length 232 [2023-11-22 23:16:10,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:16:10,939 INFO L495 AbstractCegarLoop]: Abstraction has 7704 states and 9892 transitions. [2023-11-22 23:16:10,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.357142857142858) internal successors, (271), 12 states have internal predecessors, (271), 1 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 23:16:10,940 INFO L276 IsEmpty]: Start isEmpty. Operand 7704 states and 9892 transitions. [2023-11-22 23:16:10,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2023-11-22 23:16:10,952 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:16:10,952 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 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] [2023-11-22 23:16:10,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-22 23:16:11,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-22 23:16:11,167 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:16:11,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:16:11,167 INFO L85 PathProgramCache]: Analyzing trace with hash -257211830, now seen corresponding path program 2 times [2023-11-22 23:16:11,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:16:11,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366527295] [2023-11-22 23:16:11,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:16:11,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:16:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:14,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 23:16:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:14,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 23:16:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:14,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 23:16:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:14,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 23:16:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:14,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 23:16:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:14,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1094 trivial. 0 not checked. [2023-11-22 23:16:14,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:16:14,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366527295] [2023-11-22 23:16:14,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366527295] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:16:14,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594779068] [2023-11-22 23:16:14,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 23:16:14,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:16:14,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:16:14,765 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 23:16:14,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-22 23:16:15,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 23:16:15,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 23:16:15,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 1240 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-22 23:16:15,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:16:15,800 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-22 23:16:15,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 23 [2023-11-22 23:16:15,829 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-22 23:16:15,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 23 [2023-11-22 23:16:15,871 INFO L349 Elim1Store]: treesize reduction 67, result has 11.8 percent of original size [2023-11-22 23:16:15,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 21 [2023-11-22 23:16:15,893 INFO L349 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2023-11-22 23:16:15,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2023-11-22 23:16:15,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:15,914 INFO L349 Elim1Store]: treesize reduction 75, result has 1.3 percent of original size [2023-11-22 23:16:15,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 1 [2023-11-22 23:16:15,930 INFO L349 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2023-11-22 23:16:15,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 1 [2023-11-22 23:16:15,946 INFO L349 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2023-11-22 23:16:15,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 1 [2023-11-22 23:16:15,962 INFO L349 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2023-11-22 23:16:15,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 1 [2023-11-22 23:16:15,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:15,984 INFO L349 Elim1Store]: treesize reduction 75, result has 1.3 percent of original size [2023-11-22 23:16:15,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 1 [2023-11-22 23:16:15,999 INFO L349 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2023-11-22 23:16:16,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 1 [2023-11-22 23:16:16,015 INFO L349 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2023-11-22 23:16:16,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 1 [2023-11-22 23:16:16,034 INFO L349 Elim1Store]: treesize reduction 75, result has 1.3 percent of original size [2023-11-22 23:16:16,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 1 [2023-11-22 23:16:16,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:16,050 INFO L349 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2023-11-22 23:16:16,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 1 [2023-11-22 23:16:16,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:16,063 INFO L349 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2023-11-22 23:16:16,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 1 [2023-11-22 23:16:16,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:16,081 INFO L349 Elim1Store]: treesize reduction 75, result has 1.3 percent of original size [2023-11-22 23:16:16,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 1 [2023-11-22 23:16:16,291 INFO L349 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2023-11-22 23:16:16,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 27 treesize of output 45 [2023-11-22 23:16:17,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 152 [2023-11-22 23:16:17,998 INFO L349 Elim1Store]: treesize reduction 336, result has 17.8 percent of original size [2023-11-22 23:16:17,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 6 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 38 case distinctions, treesize of input 54 treesize of output 100 [2023-11-22 23:16:18,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 91 [2023-11-22 23:16:20,586 INFO L349 Elim1Store]: treesize reduction 360, result has 47.9 percent of original size [2023-11-22 23:16:20,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 17 select indices, 17 select index equivalence classes, 139 disjoint index pairs (out of 136 index pairs), introduced 23 new quantified variables, introduced 30 case distinctions, treesize of input 391 treesize of output 1442 [2023-11-22 23:16:21,488 INFO L349 Elim1Store]: treesize reduction 337, result has 9.2 percent of original size [2023-11-22 23:16:21,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 13 case distinctions, treesize of input 735 treesize of output 974 [2023-11-22 23:16:22,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:22,930 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:22,932 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:22,936 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:22,936 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:23,217 INFO L349 Elim1Store]: treesize reduction 516, result has 4.1 percent of original size [2023-11-22 23:16:23,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 25 case distinctions, treesize of input 1190 treesize of output 1434 [2023-11-22 23:16:24,170 INFO L349 Elim1Store]: treesize reduction 180, result has 37.7 percent of original size [2023-11-22 23:16:24,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 9 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 164 treesize of output 246 [2023-11-22 23:16:54,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:54,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:54,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:54,749 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:54,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:54,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:54,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:54,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:54,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:54,753 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:54,764 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:54,766 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:54,771 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:54,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 356 treesize of output 551 [2023-11-22 23:16:54,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:54,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:55,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:55,000 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:55,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:55,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:55,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:55,013 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:55,016 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:55,021 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:55,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 353 treesize of output 568 [2023-11-22 23:16:55,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:55,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:55,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:55,313 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:55,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:55,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:55,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:55,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:55,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:55,318 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:55,328 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:55,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 341 treesize of output 439 [2023-11-22 23:16:55,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:55,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:55,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:55,588 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:55,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:55,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:55,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:55,604 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:55,607 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:55,613 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:55,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 11 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 505 treesize of output 1582 [2023-11-22 23:16:56,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:56,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:56,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:56,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:56,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:56,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:56,508 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:56,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:56,534 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:56,606 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:56,621 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:56,684 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:56,690 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:56,698 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:56,715 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:56,735 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:56,744 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:56,747 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:56,798 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:56,805 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:56,823 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:56,886 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:56,940 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:56,967 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,007 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,020 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,029 INFO L224 Elim1Store]: Index analysis took 503 ms [2023-11-22 23:16:57,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 8 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 229 treesize of output 713 [2023-11-22 23:16:57,617 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,626 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,716 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,721 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,743 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,750 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,780 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,803 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,823 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,838 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,855 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,866 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,881 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,928 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,938 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,953 INFO L224 Elim1Store]: Index analysis took 368 ms [2023-11-22 23:16:57,954 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,958 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,959 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,959 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,960 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,960 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,961 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:57,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 534 [2023-11-22 23:16:58,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:58,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:58,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:58,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:58,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:58,859 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:58,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:58,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:58,873 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:58,877 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:58,919 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:58,930 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:58,949 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:58,962 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:58,963 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:58,963 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:58,964 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:58,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 343 treesize of output 363 [2023-11-22 23:16:59,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:59,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:59,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:59,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:59,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:59,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:59,620 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:59,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:59,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:59,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:16:59,622 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:59,638 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:16:59,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 10 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 493 treesize of output 1318 [2023-11-22 23:17:01,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:01,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:01,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:01,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:01,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:01,733 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:01,749 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:01,780 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:01,786 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:01,788 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:01,799 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:01,800 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:01,802 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:01,802 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:01,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 164 [2023-11-22 23:17:02,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:02,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:02,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:02,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:02,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:02,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:02,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:02,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:02,295 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:02,321 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:02,321 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:02,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 619 treesize of output 604 [2023-11-22 23:17:02,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:02,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:02,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:02,481 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:02,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:02,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:02,490 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:02,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 213 treesize of output 155 [2023-11-22 23:17:02,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:02,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:02,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:02,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:02,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:02,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:02,568 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:02,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:02,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:02,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:02,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:02,571 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:02,591 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:02,594 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:02,601 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:02,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 11 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 508 treesize of output 1540 [2023-11-22 23:17:08,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:08,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:08,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:08,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:08,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:08,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:08,457 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:08,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:08,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:08,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:08,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:08,460 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:08,470 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:08,472 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:08,476 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:08,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 8 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 388 treesize of output 864 [2023-11-22 23:17:11,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:11,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:11,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:11,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:11,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:11,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:11,497 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:11,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:11,510 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:11,512 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:11,517 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:11,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 8 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 385 treesize of output 891 [2023-11-22 23:17:11,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:11,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:11,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:11,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:11,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:11,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:11,971 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:11,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:11,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:11,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:11,973 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:11,982 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:11,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 373 treesize of output 711 [2023-11-22 23:17:12,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:12,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:12,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:12,656 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:12,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:12,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:12,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:12,668 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:12,671 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:12,677 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:12,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 348 treesize of output 563 [2023-11-22 23:17:12,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:12,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:12,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:12,957 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:12,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:12,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:12,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:12,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:12,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:12,961 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:12,970 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:12,973 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:12,976 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:12,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 351 treesize of output 546 [2023-11-22 23:17:13,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:13,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:13,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:13,530 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:13,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:13,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:13,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:13,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:13,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:13,534 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:13,543 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:13,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 434 [2023-11-22 23:17:13,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:13,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:13,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:13,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:13,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:13,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:13,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:13,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:13,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:13,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:13,720 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:13,733 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:13,736 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:13,836 INFO L349 Elim1Store]: treesize reduction 228, result has 9.2 percent of original size [2023-11-22 23:17:13,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 8 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 9 new quantified variables, introduced 20 case distinctions, treesize of input 852 treesize of output 1294 [2023-11-22 23:17:33,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:33,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:33,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:33,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:33,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:33,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:33,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:33,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:33,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:33,295 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:33,354 INFO L349 Elim1Store]: treesize reduction 171, result has 8.1 percent of original size [2023-11-22 23:17:33,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 694 treesize of output 992 [2023-11-22 23:17:44,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:44,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:44,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:44,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:44,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:44,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:44,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:44,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:44,674 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:44,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:44,690 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:44,692 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:44,776 INFO L349 Elim1Store]: treesize reduction 171, result has 8.1 percent of original size [2023-11-22 23:17:44,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 8 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 798 treesize of output 1234 [2023-11-22 23:17:50,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:50,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:50,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:50,300 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:50,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:50,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:50,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:50,316 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:50,319 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:50,326 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:50,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 11 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 495 treesize of output 1572 [2023-11-22 23:17:53,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:53,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:53,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:53,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:53,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:53,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:53,756 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:53,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:53,810 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:53,822 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:53,825 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:53,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 341 treesize of output 428 [2023-11-22 23:17:53,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 78 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 231 treesize of output 205 [2023-11-22 23:17:54,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:54,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:54,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:54,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:54,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:54,148 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:54,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:54,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:54,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:54,151 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:54,164 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:54,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 10 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 483 treesize of output 1308 [2023-11-22 23:17:54,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:54,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:54,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:54,742 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:54,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:54,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:54,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:54,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:54,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:54,747 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:54,759 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:54,761 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:54,765 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:54,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 11 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 498 treesize of output 1530 [2023-11-22 23:17:56,043 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:56,067 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:56,171 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:56,216 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:56,239 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:56,323 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:56,382 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:56,405 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:56,425 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:56,441 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:56,450 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:56,456 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:56,458 INFO L224 Elim1Store]: Index analysis took 423 ms [2023-11-22 23:17:56,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 230 treesize of output 536 [2023-11-22 23:17:57,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:57,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:57,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:57,510 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:57,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:57,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:57,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:57,540 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:57,553 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:57,621 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:57,622 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:57,623 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:57,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 437 treesize of output 523 [2023-11-22 23:17:59,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:59,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:59,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:59,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:59,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:59,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:59,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:59,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:17:59,305 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:17:59,309 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:12,076 WARN L293 SmtUtils]: Spent 12.74s on a formula simplification. DAG size of input: 336 DAG size of output: 91 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-22 23:18:12,077 INFO L349 Elim1Store]: treesize reduction 1179, result has 13.5 percent of original size [2023-11-22 23:18:12,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 18 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 20 new quantified variables, introduced 71 case distinctions, treesize of input 6742 treesize of output 9974 [2023-11-22 23:18:14,997 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:14,998 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:14,998 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:14,998 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:15,000 WARN L200 Elim1Store]: Array PQE input equivalent to false [2023-11-22 23:18:16,354 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:16,355 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:16,355 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:16,356 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:16,357 WARN L200 Elim1Store]: Array PQE input equivalent to false [2023-11-22 23:18:17,560 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:17,560 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:17,561 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:17,561 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:17,563 WARN L200 Elim1Store]: Array PQE input equivalent to false [2023-11-22 23:18:18,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:18:18,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:18:18,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:18:18,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:18:18,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:18:18,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:18:18,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:18:18,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:18:18,207 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:18,271 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:18,573 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:18,582 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:18,600 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:18,626 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:18,626 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:18,652 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:18,669 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:18,670 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:19,024 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:19,042 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:19,423 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:19,865 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:19,892 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:19,929 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:20,021 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:20,021 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:20,047 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:20,056 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:20,084 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:20,085 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:20,208 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:20,334 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:20,459 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:20,469 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:20,505 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:20,577 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:20,604 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:20,906 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:20,916 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:20,916 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:20,943 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:20,944 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:20,953 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:20,954 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:21,176 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:21,195 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:21,195 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:21,293 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:21,365 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:21,412 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:21,458 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:18:21,512 INFO L224 Elim1Store]: Index analysis took 3271 ms [2023-11-22 23:18:21,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 29 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 823 treesize of output 6168 Killed by 15