./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/verifythis/prefixsum_rec.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/verifythis/prefixsum_rec.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 81bdf17d0130e934dcb31a2f76f595e947b99d6273334b7f05365a624466aeab --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:32:11,082 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:32:11,147 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:32:11,152 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:32:11,153 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:32:11,178 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:32:11,178 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:32:11,179 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:32:11,179 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:32:11,180 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:32:11,180 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:32:11,180 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:32:11,181 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:32:11,185 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:32:11,185 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:32:11,185 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:32:11,185 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:32:11,186 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:32:11,186 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:32:11,186 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:32:11,186 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:32:11,188 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:32:11,188 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:32:11,188 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:32:11,189 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:32:11,189 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:32:11,190 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:32:11,190 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:32:11,190 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:32:11,190 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:32:11,190 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:32:11,191 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:32:11,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:32:11,191 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:32:11,191 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:32:11,191 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:32:11,192 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:32:11,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:32:11,192 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:32:11,193 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:32:11,193 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:32:11,194 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:32:11,194 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81bdf17d0130e934dcb31a2f76f595e947b99d6273334b7f05365a624466aeab [2024-11-18 14:32:11,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:32:11,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:32:11,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:32:11,503 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:32:11,504 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:32:11,505 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/prefixsum_rec.c [2024-11-18 14:32:12,858 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:32:13,052 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:32:13,053 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/prefixsum_rec.c [2024-11-18 14:32:13,062 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1939b3cec/a53be5a250cc433a9df07944c37d1bf6/FLAGd7d4e24c6 [2024-11-18 14:32:13,076 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1939b3cec/a53be5a250cc433a9df07944c37d1bf6 [2024-11-18 14:32:13,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:32:13,080 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:32:13,083 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:32:13,083 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:32:13,089 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:32:13,089 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:32:13" (1/1) ... [2024-11-18 14:32:13,090 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67222575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:13, skipping insertion in model container [2024-11-18 14:32:13,090 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:32:13" (1/1) ... [2024-11-18 14:32:13,115 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:32:13,345 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/prefixsum_rec.c[525,538] [2024-11-18 14:32:13,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:32:13,384 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:32:13,393 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/prefixsum_rec.c[525,538] [2024-11-18 14:32:13,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:32:13,422 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:32:13,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:13 WrapperNode [2024-11-18 14:32:13,423 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:32:13,423 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:32:13,423 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:32:13,424 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:32:13,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:13" (1/1) ... [2024-11-18 14:32:13,441 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:13" (1/1) ... [2024-11-18 14:32:13,465 INFO L138 Inliner]: procedures = 22, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 76 [2024-11-18 14:32:13,466 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:32:13,466 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:32:13,467 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:32:13,467 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:32:13,477 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:13" (1/1) ... [2024-11-18 14:32:13,477 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:13" (1/1) ... [2024-11-18 14:32:13,480 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:13" (1/1) ... [2024-11-18 14:32:13,494 INFO L175 MemorySlicer]: Split 16 memory accesses to 2 slices as follows [2, 14]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 6 writes are split as follows [0, 6]. [2024-11-18 14:32:13,494 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:13" (1/1) ... [2024-11-18 14:32:13,494 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:13" (1/1) ... [2024-11-18 14:32:13,507 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:13" (1/1) ... [2024-11-18 14:32:13,511 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:13" (1/1) ... [2024-11-18 14:32:13,516 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:13" (1/1) ... [2024-11-18 14:32:13,517 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:13" (1/1) ... [2024-11-18 14:32:13,519 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:32:13,520 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:32:13,520 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:32:13,521 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:32:13,521 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:13" (1/1) ... [2024-11-18 14:32:13,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:32:13,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:13,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 14:32:13,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 14:32:13,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:32:13,623 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 14:32:13,623 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 14:32:13,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:32:13,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 14:32:13,624 INFO L130 BoogieDeclarations]: Found specification of procedure downsweep [2024-11-18 14:32:13,624 INFO L138 BoogieDeclarations]: Found implementation of procedure downsweep [2024-11-18 14:32:13,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 14:32:13,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 14:32:13,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-18 14:32:13,626 INFO L130 BoogieDeclarations]: Found specification of procedure upsweep [2024-11-18 14:32:13,626 INFO L138 BoogieDeclarations]: Found implementation of procedure upsweep [2024-11-18 14:32:13,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:32:13,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:32:13,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 14:32:13,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 14:32:13,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-18 14:32:13,627 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-18 14:32:13,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 14:32:13,738 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:32:13,747 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:32:14,049 INFO L? ?]: Removed 39 outVars from TransFormulas that were not future-live. [2024-11-18 14:32:14,049 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:32:14,066 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:32:14,068 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-18 14:32:14,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:32:14 BoogieIcfgContainer [2024-11-18 14:32:14,069 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:32:14,071 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:32:14,071 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:32:14,077 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:32:14,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:32:13" (1/3) ... [2024-11-18 14:32:14,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60de45f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:32:14, skipping insertion in model container [2024-11-18 14:32:14,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:13" (2/3) ... [2024-11-18 14:32:14,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60de45f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:32:14, skipping insertion in model container [2024-11-18 14:32:14,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:32:14" (3/3) ... [2024-11-18 14:32:14,080 INFO L112 eAbstractionObserver]: Analyzing ICFG prefixsum_rec.c [2024-11-18 14:32:14,095 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:32:14,095 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:32:14,143 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:32:14,149 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@78e6660b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:32:14,149 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:32:14,153 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 36 states have internal predecessors, (46), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-18 14:32:14,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-18 14:32:14,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:14,163 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:32:14,163 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:14,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:14,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1750397683, now seen corresponding path program 1 times [2024-11-18 14:32:14,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:14,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130057655] [2024-11-18 14:32:14,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:14,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:32:14,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:14,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130057655] [2024-11-18 14:32:14,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130057655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:14,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721820461] [2024-11-18 14:32:14,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:14,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:14,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:14,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:14,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:32:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:14,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 14:32:14,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:14,581 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:32:14,581 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:32:14,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721820461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:14,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:32:14,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 14:32:14,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694773960] [2024-11-18 14:32:14,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:14,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 14:32:14,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:14,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 14:32:14,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 14:32:14,615 INFO L87 Difference]: Start difference. First operand has 51 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 36 states have internal predecessors, (46), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:32:14,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:14,640 INFO L93 Difference]: Finished difference Result 99 states and 130 transitions. [2024-11-18 14:32:14,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 14:32:14,643 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 44 [2024-11-18 14:32:14,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:14,650 INFO L225 Difference]: With dead ends: 99 [2024-11-18 14:32:14,651 INFO L226 Difference]: Without dead ends: 47 [2024-11-18 14:32:14,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 14:32:14,657 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:14,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:32:14,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-18 14:32:14,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-18 14:32:14,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-18 14:32:14,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2024-11-18 14:32:14,710 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 44 [2024-11-18 14:32:14,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:14,710 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2024-11-18 14:32:14,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:32:14,711 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2024-11-18 14:32:14,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-18 14:32:14,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:14,714 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:32:14,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 14:32:14,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 14:32:14,915 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:14,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:14,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1950528697, now seen corresponding path program 1 times [2024-11-18 14:32:14,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:14,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118069476] [2024-11-18 14:32:14,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:14,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:15,293 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 14:32:15,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:15,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118069476] [2024-11-18 14:32:15,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118069476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:15,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:32:15,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:32:15,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162048013] [2024-11-18 14:32:15,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:15,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:32:15,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:15,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:32:15,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:32:15,297 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:32:15,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:15,349 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2024-11-18 14:32:15,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:32:15,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 44 [2024-11-18 14:32:15,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:15,351 INFO L225 Difference]: With dead ends: 60 [2024-11-18 14:32:15,351 INFO L226 Difference]: Without dead ends: 49 [2024-11-18 14:32:15,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:32:15,353 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 1 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:15,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 199 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:32:15,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-18 14:32:15,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2024-11-18 14:32:15,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-18 14:32:15,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2024-11-18 14:32:15,365 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 44 [2024-11-18 14:32:15,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:15,367 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2024-11-18 14:32:15,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:32:15,367 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2024-11-18 14:32:15,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-18 14:32:15,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:15,369 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:32:15,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:32:15,370 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:15,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:15,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1695716741, now seen corresponding path program 1 times [2024-11-18 14:32:15,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:15,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325628730] [2024-11-18 14:32:15,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:15,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:15,700 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:32:15,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:15,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325628730] [2024-11-18 14:32:15,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325628730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:15,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071461678] [2024-11-18 14:32:15,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:15,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:15,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:15,710 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:15,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:32:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:15,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:32:15,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:15,981 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:32:15,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:32:16,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:32:16,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071461678] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:32:16,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:32:16,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-18 14:32:16,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077228223] [2024-11-18 14:32:16,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:32:16,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 14:32:16,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:16,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 14:32:16,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:32:16,116 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-18 14:32:16,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:16,213 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2024-11-18 14:32:16,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:32:16,216 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 46 [2024-11-18 14:32:16,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:16,217 INFO L225 Difference]: With dead ends: 76 [2024-11-18 14:32:16,217 INFO L226 Difference]: Without dead ends: 51 [2024-11-18 14:32:16,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:32:16,218 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 8 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:16,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 205 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:32:16,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-18 14:32:16,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2024-11-18 14:32:16,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-18 14:32:16,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-11-18 14:32:16,232 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 46 [2024-11-18 14:32:16,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:16,234 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-11-18 14:32:16,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-18 14:32:16,236 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-11-18 14:32:16,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-18 14:32:16,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:16,238 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:32:16,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 14:32:16,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-18 14:32:16,439 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:16,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:16,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1044269123, now seen corresponding path program 2 times [2024-11-18 14:32:16,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:16,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804136440] [2024-11-18 14:32:16,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:32:16,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:16,516 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:32:16,517 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:32:17,795 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 14:32:17,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:17,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804136440] [2024-11-18 14:32:17,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804136440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:17,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100690406] [2024-11-18 14:32:17,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:32:17,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:17,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:17,798 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:17,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 14:32:17,915 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:32:17,916 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:32:17,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-18 14:32:17,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:18,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-18 14:32:18,133 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_downsweep_~left_9 Int)) (and (<= |c_downsweep_#in~right| (+ v_downsweep_~left_9 1)) (= |c_#memory_int#1| (store |c_old(#memory_int#1)| |c_downsweep_#in~a.base| (let ((.cse0 (select |c_old(#memory_int#1)| |c_downsweep_#in~a.base|)) (.cse1 (+ |c_downsweep_#in~a.offset| (* |c_downsweep_#in~right| 4)))) (store (store .cse0 .cse1 (select (select |c_#memory_int#1| |c_downsweep_#in~a.base|) .cse1)) (+ |c_downsweep_#in~a.offset| (* v_downsweep_~left_9 4)) (select .cse0 .cse1))))) (<= v_downsweep_~left_9 |c_downsweep_#in~left|))) is different from true [2024-11-18 14:32:18,171 INFO L349 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2024-11-18 14:32:18,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 45 treesize of output 15 [2024-11-18 14:32:18,323 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 14:32:18,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:32:18,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100690406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:18,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 14:32:18,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 24 [2024-11-18 14:32:18,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293144182] [2024-11-18 14:32:18,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 14:32:18,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-18 14:32:18,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:18,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-18 14:32:18,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=585, Unknown=1, NotChecked=48, Total=702 [2024-11-18 14:32:18,603 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 24 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 5 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-18 14:32:19,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:19,420 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2024-11-18 14:32:19,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-18 14:32:19,422 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 5 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 48 [2024-11-18 14:32:19,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:19,425 INFO L225 Difference]: With dead ends: 64 [2024-11-18 14:32:19,425 INFO L226 Difference]: Without dead ends: 62 [2024-11-18 14:32:19,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=135, Invalid=1274, Unknown=1, NotChecked=72, Total=1482 [2024-11-18 14:32:19,429 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 19 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:19,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 365 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 562 Invalid, 0 Unknown, 75 Unchecked, 0.4s Time] [2024-11-18 14:32:19,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-18 14:32:19,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2024-11-18 14:32:19,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 10 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (13), 11 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-18 14:32:19,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2024-11-18 14:32:19,448 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 48 [2024-11-18 14:32:19,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:19,448 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2024-11-18 14:32:19,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 5 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-18 14:32:19,448 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2024-11-18 14:32:19,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-18 14:32:19,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:19,450 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:32:19,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 14:32:19,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:19,651 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:19,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:19,651 INFO L85 PathProgramCache]: Analyzing trace with hash -254848134, now seen corresponding path program 1 times [2024-11-18 14:32:19,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:19,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442248984] [2024-11-18 14:32:19,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:19,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:19,904 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:32:19,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:19,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442248984] [2024-11-18 14:32:19,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442248984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:19,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547088916] [2024-11-18 14:32:19,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:19,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:19,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:19,909 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:19,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 14:32:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:20,019 WARN L253 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 123 conjuncts are in the unsatisfiable core [2024-11-18 14:32:20,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:20,135 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 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-18 14:32:20,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 7 treesize of output 6 [2024-11-18 14:32:20,273 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-18 14:32:20,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2024-11-18 14:32:20,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 15 treesize of output 10 [2024-11-18 14:32:20,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-18 14:32:20,421 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 0 case distinctions, treesize of input 11 treesize of output 10 [2024-11-18 14:32:20,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2024-11-18 14:32:20,537 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 0 case distinctions, treesize of input 25 treesize of output 14 [2024-11-18 14:32:20,658 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:32:20,658 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:32:39,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547088916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:39,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 14:32:39,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 20] total 26 [2024-11-18 14:32:39,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114140032] [2024-11-18 14:32:39,602 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 14:32:39,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-18 14:32:39,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:39,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-18 14:32:39,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1134, Unknown=3, NotChecked=0, Total=1260 [2024-11-18 14:32:39,605 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand has 26 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 22 states have internal predecessors, (59), 6 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2024-11-18 14:32:40,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:40,878 INFO L93 Difference]: Finished difference Result 111 states and 142 transitions. [2024-11-18 14:32:40,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 14:32:40,879 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 22 states have internal predecessors, (59), 6 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 52 [2024-11-18 14:32:40,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:40,881 INFO L225 Difference]: With dead ends: 111 [2024-11-18 14:32:40,881 INFO L226 Difference]: Without dead ends: 81 [2024-11-18 14:32:40,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=289, Invalid=2678, Unknown=3, NotChecked=0, Total=2970 [2024-11-18 14:32:40,883 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 80 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:40,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 445 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:32:40,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-18 14:32:40,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 70. [2024-11-18 14:32:40,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 51 states have internal predecessors, (57), 13 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-18 14:32:40,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions. [2024-11-18 14:32:40,909 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 86 transitions. Word has length 52 [2024-11-18 14:32:40,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:40,909 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 86 transitions. [2024-11-18 14:32:40,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 22 states have internal predecessors, (59), 6 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2024-11-18 14:32:40,910 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 86 transitions. [2024-11-18 14:32:40,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-18 14:32:40,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:40,911 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:32:40,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 14:32:41,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:41,119 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:41,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:41,119 INFO L85 PathProgramCache]: Analyzing trace with hash -126025424, now seen corresponding path program 1 times [2024-11-18 14:32:41,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:41,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145966127] [2024-11-18 14:32:41,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:41,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:43,558 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:32:43,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:43,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145966127] [2024-11-18 14:32:43,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145966127] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:43,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566374882] [2024-11-18 14:32:43,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:43,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:43,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:43,561 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:43,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 14:32:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:43,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-18 14:32:43,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:43,776 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 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-18 14:32:43,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 7 treesize of output 6 [2024-11-18 14:32:43,970 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-18 14:32:43,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2024-11-18 14:32:44,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 15 treesize of output 10 [2024-11-18 14:32:44,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-18 14:32:44,123 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 0 case distinctions, treesize of input 11 treesize of output 10 [2024-11-18 14:32:44,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2024-11-18 14:32:44,288 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 0 case distinctions, treesize of input 25 treesize of output 14 [2024-11-18 14:32:44,564 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_upsweep_~right_16 Int)) (and (= (store |c_old(#memory_int#1)| |c_upsweep_#in~a.base| (let ((.cse0 (+ |c_upsweep_#in~a.offset| (* v_upsweep_~right_16 4)))) (store (select |c_old(#memory_int#1)| |c_upsweep_#in~a.base|) .cse0 (select (select |c_#memory_int#1| |c_upsweep_#in~a.base|) .cse0)))) |c_#memory_int#1|) (<= |c_upsweep_#in~right| v_upsweep_~right_16))) is different from true [2024-11-18 14:32:44,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2024-11-18 14:32:44,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2024-11-18 14:32:44,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2024-11-18 14:32:45,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 77 [2024-11-18 14:32:45,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 27 [2024-11-18 14:32:45,539 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:32:45,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:32:46,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566374882] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:46,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 14:32:46,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27] total 49 [2024-11-18 14:32:46,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306504560] [2024-11-18 14:32:46,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 14:32:46,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-18 14:32:46,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:46,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-18 14:32:46,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=2554, Unknown=1, NotChecked=102, Total=2862 [2024-11-18 14:32:46,068 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand has 49 states, 44 states have (on average 1.5454545454545454) internal successors, (68), 41 states have internal predecessors, (68), 10 states have call successors, (11), 3 states have call predecessors, (11), 8 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-18 14:32:48,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:48,114 INFO L93 Difference]: Finished difference Result 102 states and 133 transitions. [2024-11-18 14:32:48,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-18 14:32:48,114 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 44 states have (on average 1.5454545454545454) internal successors, (68), 41 states have internal predecessors, (68), 10 states have call successors, (11), 3 states have call predecessors, (11), 8 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) Word has length 53 [2024-11-18 14:32:48,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:48,116 INFO L225 Difference]: With dead ends: 102 [2024-11-18 14:32:48,116 INFO L226 Difference]: Without dead ends: 100 [2024-11-18 14:32:48,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1686 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=415, Invalid=5288, Unknown=1, NotChecked=148, Total=5852 [2024-11-18 14:32:48,118 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 109 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:48,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 543 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1206 Invalid, 0 Unknown, 116 Unchecked, 1.1s Time] [2024-11-18 14:32:48,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-18 14:32:48,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 86. [2024-11-18 14:32:48,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.109375) internal successors, (71), 65 states have internal predecessors, (71), 15 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (23), 16 states have call predecessors, (23), 15 states have call successors, (23) [2024-11-18 14:32:48,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 109 transitions. [2024-11-18 14:32:48,144 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 109 transitions. Word has length 53 [2024-11-18 14:32:48,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:48,145 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 109 transitions. [2024-11-18 14:32:48,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 44 states have (on average 1.5454545454545454) internal successors, (68), 41 states have internal predecessors, (68), 10 states have call successors, (11), 3 states have call predecessors, (11), 8 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-18 14:32:48,145 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 109 transitions. [2024-11-18 14:32:48,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-18 14:32:48,146 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:48,146 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-18 14:32:48,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 14:32:48,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:48,347 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:48,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:48,348 INFO L85 PathProgramCache]: Analyzing trace with hash 684103662, now seen corresponding path program 2 times [2024-11-18 14:32:48,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:48,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632910822] [2024-11-18 14:32:48,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:32:48,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:48,371 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:32:48,371 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:32:48,610 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 14:32:48,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:48,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632910822] [2024-11-18 14:32:48,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632910822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:48,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21606098] [2024-11-18 14:32:48,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:32:48,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:48,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:48,616 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:48,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 14:32:48,723 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:32:48,724 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:32:48,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 14:32:48,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:48,816 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 14:32:48,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:32:49,019 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 14:32:49,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21606098] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:32:49,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:32:49,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 18 [2024-11-18 14:32:49,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140773918] [2024-11-18 14:32:49,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:32:49,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 14:32:49,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:49,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 14:32:49,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:32:49,022 INFO L87 Difference]: Start difference. First operand 86 states and 109 transitions. Second operand has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 4 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-18 14:32:49,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:49,406 INFO L93 Difference]: Finished difference Result 110 states and 140 transitions. [2024-11-18 14:32:49,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 14:32:49,407 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 4 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 55 [2024-11-18 14:32:49,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:49,411 INFO L225 Difference]: With dead ends: 110 [2024-11-18 14:32:49,412 INFO L226 Difference]: Without dead ends: 89 [2024-11-18 14:32:49,412 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 99 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2024-11-18 14:32:49,413 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 9 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:49,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 377 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:32:49,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-18 14:32:49,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2024-11-18 14:32:49,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 66 states have internal predecessors, (72), 16 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (23), 17 states have call predecessors, (23), 16 states have call successors, (23) [2024-11-18 14:32:49,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 111 transitions. [2024-11-18 14:32:49,435 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 111 transitions. Word has length 55 [2024-11-18 14:32:49,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:49,436 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 111 transitions. [2024-11-18 14:32:49,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 4 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-18 14:32:49,438 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 111 transitions. [2024-11-18 14:32:49,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 14:32:49,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:49,439 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-18 14:32:49,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 14:32:49,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:49,641 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:49,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:49,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1979855385, now seen corresponding path program 3 times [2024-11-18 14:32:49,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:49,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603033219] [2024-11-18 14:32:49,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:32:49,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:49,683 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 14:32:49,683 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:32:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:32:49,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:49,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603033219] [2024-11-18 14:32:49,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603033219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:49,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289960637] [2024-11-18 14:32:49,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:32:49,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:49,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:49,904 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:49,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 14:32:50,016 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 14:32:50,016 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:32:50,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 14:32:50,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:50,172 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 14:32:50,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:32:50,267 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 14:32:50,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289960637] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:32:50,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:32:50,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 18 [2024-11-18 14:32:50,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223310896] [2024-11-18 14:32:50,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:32:50,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 14:32:50,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:50,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 14:32:50,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:32:50,269 INFO L87 Difference]: Start difference. First operand 88 states and 111 transitions. Second operand has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 14:32:50,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:50,562 INFO L93 Difference]: Finished difference Result 119 states and 146 transitions. [2024-11-18 14:32:50,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 14:32:50,563 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 57 [2024-11-18 14:32:50,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:50,564 INFO L225 Difference]: With dead ends: 119 [2024-11-18 14:32:50,564 INFO L226 Difference]: Without dead ends: 103 [2024-11-18 14:32:50,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 103 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:32:50,565 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 23 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:50,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 362 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:32:50,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-18 14:32:50,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 98. [2024-11-18 14:32:50,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 72 states have (on average 1.125) internal successors, (81), 73 states have internal predecessors, (81), 18 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (26), 19 states have call predecessors, (26), 18 states have call successors, (26) [2024-11-18 14:32:50,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 125 transitions. [2024-11-18 14:32:50,594 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 125 transitions. Word has length 57 [2024-11-18 14:32:50,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:50,595 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 125 transitions. [2024-11-18 14:32:50,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 14:32:50,595 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 125 transitions. [2024-11-18 14:32:50,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-18 14:32:50,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:50,596 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-18 14:32:50,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 14:32:50,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:50,797 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:50,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:50,798 INFO L85 PathProgramCache]: Analyzing trace with hash 907701910, now seen corresponding path program 1 times [2024-11-18 14:32:50,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:50,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247230235] [2024-11-18 14:32:50,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:50,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:50,970 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 14:32:50,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:50,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247230235] [2024-11-18 14:32:50,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247230235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:50,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383002994] [2024-11-18 14:32:50,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:50,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:50,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:50,975 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:50,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 14:32:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:51,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 14:32:51,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:51,231 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 14:32:51,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:32:51,617 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 14:32:51,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383002994] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:32:51,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:32:51,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 7] total 19 [2024-11-18 14:32:51,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676014626] [2024-11-18 14:32:51,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:32:51,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 14:32:51,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:51,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 14:32:51,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2024-11-18 14:32:51,619 INFO L87 Difference]: Start difference. First operand 98 states and 125 transitions. Second operand has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 6 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-18 14:32:51,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:51,902 INFO L93 Difference]: Finished difference Result 105 states and 131 transitions. [2024-11-18 14:32:51,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 14:32:51,903 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 6 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 60 [2024-11-18 14:32:51,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:51,904 INFO L225 Difference]: With dead ends: 105 [2024-11-18 14:32:51,904 INFO L226 Difference]: Without dead ends: 94 [2024-11-18 14:32:51,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2024-11-18 14:32:51,905 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 22 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:51,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 343 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:32:51,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-18 14:32:51,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2024-11-18 14:32:51,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 68 states have (on average 1.1176470588235294) internal successors, (76), 70 states have internal predecessors, (76), 17 states have call successors, (17), 5 states have call predecessors, (17), 7 states have return successors, (23), 17 states have call predecessors, (23), 17 states have call successors, (23) [2024-11-18 14:32:51,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2024-11-18 14:32:51,922 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 116 transitions. Word has length 60 [2024-11-18 14:32:51,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:51,922 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 116 transitions. [2024-11-18 14:32:51,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 6 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-18 14:32:51,923 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 116 transitions. [2024-11-18 14:32:51,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 14:32:51,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:51,924 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-18 14:32:51,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-18 14:32:52,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-18 14:32:52,125 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:52,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:52,125 INFO L85 PathProgramCache]: Analyzing trace with hash 268461038, now seen corresponding path program 1 times [2024-11-18 14:32:52,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:52,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41801483] [2024-11-18 14:32:52,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:52,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:52,275 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 14:32:52,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:52,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41801483] [2024-11-18 14:32:52,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41801483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:52,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564551099] [2024-11-18 14:32:52,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:52,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:52,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:52,278 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:52,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 14:32:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:52,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 14:32:52,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:52,488 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 14:32:52,489 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:32:52,832 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 14:32:52,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564551099] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:32:52,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:32:52,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2024-11-18 14:32:52,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077791803] [2024-11-18 14:32:52,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:32:52,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 14:32:52,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:52,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 14:32:52,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:32:52,834 INFO L87 Difference]: Start difference. First operand 93 states and 116 transitions. Second operand has 18 states, 16 states have (on average 3.75) internal successors, (60), 18 states have internal predecessors, (60), 6 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (13), 4 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-18 14:32:52,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:52,937 INFO L93 Difference]: Finished difference Result 105 states and 130 transitions. [2024-11-18 14:32:52,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 14:32:52,937 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.75) internal successors, (60), 18 states have internal predecessors, (60), 6 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (13), 4 states have call predecessors, (13), 6 states have call successors, (13) Word has length 66 [2024-11-18 14:32:52,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:52,938 INFO L225 Difference]: With dead ends: 105 [2024-11-18 14:32:52,938 INFO L226 Difference]: Without dead ends: 76 [2024-11-18 14:32:52,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2024-11-18 14:32:52,939 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 9 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:52,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 314 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:32:52,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-18 14:32:52,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2024-11-18 14:32:52,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 50 states have (on average 1.12) internal successors, (56), 52 states have internal predecessors, (56), 13 states have call successors, (13), 4 states have call predecessors, (13), 6 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17) [2024-11-18 14:32:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions. [2024-11-18 14:32:52,953 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 86 transitions. Word has length 66 [2024-11-18 14:32:52,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:52,954 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 86 transitions. [2024-11-18 14:32:52,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.75) internal successors, (60), 18 states have internal predecessors, (60), 6 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (13), 4 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-18 14:32:52,955 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 86 transitions. [2024-11-18 14:32:52,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 14:32:52,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:52,957 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:32:52,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-18 14:32:53,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 14:32:53,158 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:53,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:53,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1397955114, now seen corresponding path program 1 times [2024-11-18 14:32:53,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:53,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964712207] [2024-11-18 14:32:53,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:53,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:53,365 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:32:53,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:53,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964712207] [2024-11-18 14:32:53,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964712207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:32:53,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069444847] [2024-11-18 14:32:53,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:53,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:32:53,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:53,369 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:32:53,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 14:32:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:53,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-18 14:32:53,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:32:53,678 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:32:53,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:32:54,188 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 14:32:54,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069444847] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:32:54,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:32:54,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 25 [2024-11-18 14:32:54,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120152076] [2024-11-18 14:32:54,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:32:54,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 14:32:54,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:54,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 14:32:54,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2024-11-18 14:32:54,191 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand has 25 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 25 states have internal predecessors, (79), 6 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 5 states have call predecessors, (22), 6 states have call successors, (22) [2024-11-18 14:32:54,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:54,557 INFO L93 Difference]: Finished difference Result 117 states and 147 transitions. [2024-11-18 14:32:54,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 14:32:54,558 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 25 states have internal predecessors, (79), 6 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 5 states have call predecessors, (22), 6 states have call successors, (22) Word has length 75 [2024-11-18 14:32:54,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:54,559 INFO L225 Difference]: With dead ends: 117 [2024-11-18 14:32:54,559 INFO L226 Difference]: Without dead ends: 87 [2024-11-18 14:32:54,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 14:32:54,560 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 15 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:54,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 533 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:32:54,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-18 14:32:54,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79. [2024-11-18 14:32:54,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 59 states have (on average 1.11864406779661) internal successors, (66), 61 states have internal predecessors, (66), 13 states have call successors, (13), 4 states have call predecessors, (13), 6 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17) [2024-11-18 14:32:54,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2024-11-18 14:32:54,584 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 75 [2024-11-18 14:32:54,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:54,584 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2024-11-18 14:32:54,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 25 states have internal predecessors, (79), 6 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 5 states have call predecessors, (22), 6 states have call successors, (22) [2024-11-18 14:32:54,584 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2024-11-18 14:32:54,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-18 14:32:54,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:54,585 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2024-11-18 14:32:54,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-18 14:32:54,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-18 14:32:54,786 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:54,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:54,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1328432620, now seen corresponding path program 2 times [2024-11-18 14:32:54,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:54,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008569478] [2024-11-18 14:32:54,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:32:54,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:54,855 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:32:54,855 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat