/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-45.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 08:12:45,606 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 08:12:45,667 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 08:12:45,670 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 08:12:45,671 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 08:12:45,709 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 08:12:45,709 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 08:12:45,710 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 08:12:45,710 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 08:12:45,712 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 08:12:45,712 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 08:12:45,712 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 08:12:45,712 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 08:12:45,713 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 08:12:45,713 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 08:12:45,713 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 08:12:45,713 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 08:12:45,714 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 08:12:45,714 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 08:12:45,714 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 08:12:45,714 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 08:12:45,718 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 08:12:45,718 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 08:12:45,719 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 08:12:45,719 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 08:12:45,719 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 08:12:45,719 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 08:12:45,719 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 08:12:45,720 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 08:12:45,720 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 08:12:45,720 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 08:12:45,720 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 08:12:45,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 08:12:45,721 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 08:12:45,721 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 08:12:45,721 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 08:12:45,721 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 08:12:45,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 08:12:45,721 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 08:12:45,721 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 08:12:45,721 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 08:12:45,722 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 08:12:45,722 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 08:12:45,722 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 08:12:45,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 08:12:45,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 08:12:45,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 08:12:45,971 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 08:12:45,971 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 08:12:45,972 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-45.i [2023-12-19 08:12:47,132 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 08:12:47,292 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 08:12:47,293 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-45.i [2023-12-19 08:12:47,305 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45316b22a/d2316c2ece24481cb0982757cf72a97a/FLAG2b67da94d [2023-12-19 08:12:47,320 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45316b22a/d2316c2ece24481cb0982757cf72a97a [2023-12-19 08:12:47,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 08:12:47,323 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 08:12:47,324 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 08:12:47,324 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 08:12:47,328 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 08:12:47,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:12:47" (1/1) ... [2023-12-19 08:12:47,330 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f9f18c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:47, skipping insertion in model container [2023-12-19 08:12:47,330 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:12:47" (1/1) ... [2023-12-19 08:12:47,368 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 08:12:47,488 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-45.i[919,932] [2023-12-19 08:12:47,540 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 08:12:47,554 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 08:12:47,569 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-45.i[919,932] [2023-12-19 08:12:47,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 08:12:47,631 INFO L206 MainTranslator]: Completed translation [2023-12-19 08:12:47,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:47 WrapperNode [2023-12-19 08:12:47,632 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 08:12:47,633 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 08:12:47,633 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 08:12:47,634 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 08:12:47,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:47" (1/1) ... [2023-12-19 08:12:47,656 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:47" (1/1) ... [2023-12-19 08:12:47,686 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 192 [2023-12-19 08:12:47,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 08:12:47,687 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 08:12:47,687 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 08:12:47,687 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 08:12:47,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:47" (1/1) ... [2023-12-19 08:12:47,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:47" (1/1) ... [2023-12-19 08:12:47,699 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:47" (1/1) ... [2023-12-19 08:12:47,711 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 08:12:47,711 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:47" (1/1) ... [2023-12-19 08:12:47,711 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:47" (1/1) ... [2023-12-19 08:12:47,717 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:47" (1/1) ... [2023-12-19 08:12:47,720 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:47" (1/1) ... [2023-12-19 08:12:47,721 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:47" (1/1) ... [2023-12-19 08:12:47,722 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:47" (1/1) ... [2023-12-19 08:12:47,725 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 08:12:47,726 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 08:12:47,726 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 08:12:47,726 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 08:12:47,726 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:47" (1/1) ... [2023-12-19 08:12:47,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 08:12:47,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:12:47,794 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) [2023-12-19 08:12:47,811 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 [2023-12-19 08:12:47,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 08:12:47,817 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 08:12:47,818 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 08:12:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 08:12:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 08:12:47,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 08:12:47,920 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 08:12:47,921 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 08:12:48,310 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 08:12:48,355 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 08:12:48,355 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 08:12:48,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:12:48 BoogieIcfgContainer [2023-12-19 08:12:48,355 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 08:12:48,357 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 08:12:48,357 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 08:12:48,360 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 08:12:48,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 08:12:47" (1/3) ... [2023-12-19 08:12:48,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51668689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:12:48, skipping insertion in model container [2023-12-19 08:12:48,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:47" (2/3) ... [2023-12-19 08:12:48,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51668689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:12:48, skipping insertion in model container [2023-12-19 08:12:48,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:12:48" (3/3) ... [2023-12-19 08:12:48,362 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-45.i [2023-12-19 08:12:48,374 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 08:12:48,375 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 08:12:48,411 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 08:12:48,417 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@419aadd9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 08:12:48,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 08:12:48,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 50 states have (on average 1.48) internal successors, (74), 51 states have internal predecessors, (74), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-19 08:12:48,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-19 08:12:48,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:12:48,458 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:12:48,462 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:12:48,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:12:48,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1137202854, now seen corresponding path program 1 times [2023-12-19 08:12:48,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:12:48,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012010333] [2023-12-19 08:12:48,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:12:48,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:12:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:12:48,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:12:48,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012010333] [2023-12-19 08:12:48,693 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 08:12:48,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138632357] [2023-12-19 08:12:48,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:12:48,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:12:48,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:12:48,726 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:12:48,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 08:12:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:12:48,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 08:12:48,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:12:48,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2023-12-19 08:12:48,994 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:12:48,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138632357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:12:48,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:12:48,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 08:12:48,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507172453] [2023-12-19 08:12:48,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:12:49,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 08:12:49,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:12:49,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 08:12:49,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 08:12:49,042 INFO L87 Difference]: Start difference. First operand has 79 states, 50 states have (on average 1.48) internal successors, (74), 51 states have internal predecessors, (74), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-19 08:12:49,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:12:49,086 INFO L93 Difference]: Finished difference Result 155 states and 276 transitions. [2023-12-19 08:12:49,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 08:12:49,088 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 169 [2023-12-19 08:12:49,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:12:49,096 INFO L225 Difference]: With dead ends: 155 [2023-12-19 08:12:49,096 INFO L226 Difference]: Without dead ends: 77 [2023-12-19 08:12:49,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 08:12:49,105 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:12:49,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 08:12:49,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-19 08:12:49,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-12-19 08:12:49,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 49 states have internal predecessors, (68), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-19 08:12:49,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 120 transitions. [2023-12-19 08:12:49,149 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 120 transitions. Word has length 169 [2023-12-19 08:12:49,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:12:49,149 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 120 transitions. [2023-12-19 08:12:49,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-19 08:12:49,150 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 120 transitions. [2023-12-19 08:12:49,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-19 08:12:49,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:12:49,155 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:12:49,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 08:12:49,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 08:12:49,361 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:12:49,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:12:49,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1039698738, now seen corresponding path program 1 times [2023-12-19 08:12:49,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:12:49,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395486817] [2023-12-19 08:12:49,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:12:49,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:12:49,485 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:12:49,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334132369] [2023-12-19 08:12:49,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:12:49,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:12:49,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:12:49,489 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:12:49,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 08:12:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:12:49,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 08:12:49,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:12:49,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-12-19 08:12:49,782 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:12:49,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:12:49,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395486817] [2023-12-19 08:12:49,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:12:49,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334132369] [2023-12-19 08:12:49,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334132369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:12:49,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:12:49,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 08:12:49,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089162879] [2023-12-19 08:12:49,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:12:49,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 08:12:49,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:12:49,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 08:12:49,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 08:12:49,795 INFO L87 Difference]: Start difference. First operand 77 states and 120 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-12-19 08:12:49,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:12:49,864 INFO L93 Difference]: Finished difference Result 226 states and 352 transitions. [2023-12-19 08:12:49,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 08:12:49,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 169 [2023-12-19 08:12:49,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:12:49,871 INFO L225 Difference]: With dead ends: 226 [2023-12-19 08:12:49,871 INFO L226 Difference]: Without dead ends: 150 [2023-12-19 08:12:49,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 08:12:49,872 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 109 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:12:49,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 248 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 08:12:49,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-19 08:12:49,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2023-12-19 08:12:49,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 93 states have (on average 1.3440860215053763) internal successors, (125), 93 states have internal predecessors, (125), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-19 08:12:49,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 229 transitions. [2023-12-19 08:12:49,919 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 229 transitions. Word has length 169 [2023-12-19 08:12:49,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:12:49,920 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 229 transitions. [2023-12-19 08:12:49,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-12-19 08:12:49,920 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 229 transitions. [2023-12-19 08:12:49,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-19 08:12:49,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:12:49,926 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:12:49,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 08:12:50,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 08:12:50,133 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:12:50,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:12:50,133 INFO L85 PathProgramCache]: Analyzing trace with hash -465437400, now seen corresponding path program 1 times [2023-12-19 08:12:50,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:12:50,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726076932] [2023-12-19 08:12:50,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:12:50,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:12:50,183 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:12:50,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741756814] [2023-12-19 08:12:50,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:12:50,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:12:50,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:12:50,192 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:12:50,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 08:12:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:12:50,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 08:12:50,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:12:50,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-12-19 08:12:50,369 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:12:50,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:12:50,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726076932] [2023-12-19 08:12:50,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:12:50,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741756814] [2023-12-19 08:12:50,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741756814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:12:50,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:12:50,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 08:12:50,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588351984] [2023-12-19 08:12:50,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:12:50,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 08:12:50,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:12:50,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 08:12:50,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 08:12:50,373 INFO L87 Difference]: Start difference. First operand 148 states and 229 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-12-19 08:12:50,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:12:50,418 INFO L93 Difference]: Finished difference Result 339 states and 524 transitions. [2023-12-19 08:12:50,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 08:12:50,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 170 [2023-12-19 08:12:50,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:12:50,424 INFO L225 Difference]: With dead ends: 339 [2023-12-19 08:12:50,424 INFO L226 Difference]: Without dead ends: 192 [2023-12-19 08:12:50,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 08:12:50,431 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 31 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:12:50,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 240 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 08:12:50,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-12-19 08:12:50,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 168. [2023-12-19 08:12:50,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 113 states have (on average 1.3716814159292035) internal successors, (155), 113 states have internal predecessors, (155), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-19 08:12:50,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 259 transitions. [2023-12-19 08:12:50,454 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 259 transitions. Word has length 170 [2023-12-19 08:12:50,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:12:50,455 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 259 transitions. [2023-12-19 08:12:50,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-12-19 08:12:50,455 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 259 transitions. [2023-12-19 08:12:50,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-19 08:12:50,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:12:50,463 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:12:50,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 08:12:50,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:12:50,671 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:12:50,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:12:50,672 INFO L85 PathProgramCache]: Analyzing trace with hash 874100274, now seen corresponding path program 1 times [2023-12-19 08:12:50,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:12:50,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044713138] [2023-12-19 08:12:50,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:12:50,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:12:50,716 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:12:50,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [632729027] [2023-12-19 08:12:50,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:12:50,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:12:50,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:12:50,737 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:12:50,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 08:12:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:12:50,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 08:12:50,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:12:52,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 673 proven. 39 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2023-12-19 08:12:52,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:12:58,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 36 proven. 39 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-12-19 08:12:58,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:12:58,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044713138] [2023-12-19 08:12:58,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:12:58,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632729027] [2023-12-19 08:12:58,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632729027] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:12:58,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:12:58,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-19 08:12:58,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535782977] [2023-12-19 08:12:58,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:12:58,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 08:12:58,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:12:58,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 08:12:58,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-12-19 08:12:58,159 INFO L87 Difference]: Start difference. First operand 168 states and 259 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 3 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2023-12-19 08:12:59,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:12:59,016 INFO L93 Difference]: Finished difference Result 498 states and 740 transitions. [2023-12-19 08:12:59,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-19 08:12:59,017 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 3 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 170 [2023-12-19 08:12:59,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:12:59,020 INFO L225 Difference]: With dead ends: 498 [2023-12-19 08:12:59,020 INFO L226 Difference]: Without dead ends: 331 [2023-12-19 08:12:59,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=449, Invalid=1111, Unknown=0, NotChecked=0, Total=1560 [2023-12-19 08:12:59,022 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 460 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 08:12:59,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 425 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 08:12:59,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-12-19 08:12:59,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 191. [2023-12-19 08:12:59,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 132 states have (on average 1.3484848484848484) internal successors, (178), 132 states have internal predecessors, (178), 52 states have call successors, (52), 6 states have call predecessors, (52), 6 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-19 08:12:59,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 282 transitions. [2023-12-19 08:12:59,046 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 282 transitions. Word has length 170 [2023-12-19 08:12:59,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:12:59,047 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 282 transitions. [2023-12-19 08:12:59,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 3 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2023-12-19 08:12:59,047 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 282 transitions. [2023-12-19 08:12:59,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-19 08:12:59,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:12:59,049 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:12:59,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 08:12:59,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:12:59,258 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:12:59,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:12:59,259 INFO L85 PathProgramCache]: Analyzing trace with hash 64753648, now seen corresponding path program 1 times [2023-12-19 08:12:59,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:12:59,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026618077] [2023-12-19 08:12:59,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:12:59,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:12:59,279 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:12:59,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179146481] [2023-12-19 08:12:59,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:12:59,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:12:59,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:12:59,293 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:12:59,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 08:12:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:12:59,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 08:12:59,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:13:00,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-12-19 08:13:00,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:13:00,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:13:00,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026618077] [2023-12-19 08:13:00,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:13:00,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179146481] [2023-12-19 08:13:00,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179146481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:13:00,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:13:00,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 08:13:00,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763735072] [2023-12-19 08:13:00,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:13:00,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 08:13:00,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:13:00,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 08:13:00,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 08:13:00,094 INFO L87 Difference]: Start difference. First operand 191 states and 282 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-12-19 08:13:00,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:13:00,477 INFO L93 Difference]: Finished difference Result 479 states and 710 transitions. [2023-12-19 08:13:00,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 08:13:00,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 170 [2023-12-19 08:13:00,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:13:00,508 INFO L225 Difference]: With dead ends: 479 [2023-12-19 08:13:00,508 INFO L226 Difference]: Without dead ends: 289 [2023-12-19 08:13:00,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 08:13:00,516 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 240 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 08:13:00,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 196 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 08:13:00,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-19 08:13:00,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 285. [2023-12-19 08:13:00,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 208 states have (on average 1.375) internal successors, (286), 210 states have internal predecessors, (286), 68 states have call successors, (68), 8 states have call predecessors, (68), 8 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-19 08:13:00,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 422 transitions. [2023-12-19 08:13:00,588 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 422 transitions. Word has length 170 [2023-12-19 08:13:00,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:13:00,596 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 422 transitions. [2023-12-19 08:13:00,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-12-19 08:13:00,605 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 422 transitions. [2023-12-19 08:13:00,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 08:13:00,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:13:00,608 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:13:00,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 08:13:00,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:13:00,829 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:13:00,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:13:00,830 INFO L85 PathProgramCache]: Analyzing trace with hash 918516620, now seen corresponding path program 1 times [2023-12-19 08:13:00,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:13:00,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40141887] [2023-12-19 08:13:00,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:13:00,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:13:00,866 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:13:00,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307518046] [2023-12-19 08:13:00,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:13:00,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:13:00,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:13:00,868 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:13:00,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 08:13:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:13:00,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 08:13:00,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:13:01,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-12-19 08:13:01,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:13:01,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:13:01,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40141887] [2023-12-19 08:13:01,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:13:01,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307518046] [2023-12-19 08:13:01,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307518046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:13:01,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:13:01,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 08:13:01,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957258081] [2023-12-19 08:13:01,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:13:01,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 08:13:01,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:13:01,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 08:13:01,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 08:13:01,050 INFO L87 Difference]: Start difference. First operand 285 states and 422 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-12-19 08:13:01,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:13:01,248 INFO L93 Difference]: Finished difference Result 947 states and 1378 transitions. [2023-12-19 08:13:01,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 08:13:01,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 171 [2023-12-19 08:13:01,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:13:01,254 INFO L225 Difference]: With dead ends: 947 [2023-12-19 08:13:01,254 INFO L226 Difference]: Without dead ends: 663 [2023-12-19 08:13:01,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 08:13:01,256 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 182 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 08:13:01,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 365 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 08:13:01,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2023-12-19 08:13:01,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 455. [2023-12-19 08:13:01,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 326 states have (on average 1.343558282208589) internal successors, (438), 332 states have internal predecessors, (438), 112 states have call successors, (112), 16 states have call predecessors, (112), 16 states have return successors, (112), 106 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-19 08:13:01,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 662 transitions. [2023-12-19 08:13:01,301 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 662 transitions. Word has length 171 [2023-12-19 08:13:01,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:13:01,302 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 662 transitions. [2023-12-19 08:13:01,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-12-19 08:13:01,302 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 662 transitions. [2023-12-19 08:13:01,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 08:13:01,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:13:01,303 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:13:01,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 08:13:01,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:13:01,510 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:13:01,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:13:01,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1176682058, now seen corresponding path program 1 times [2023-12-19 08:13:01,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:13:01,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869956503] [2023-12-19 08:13:01,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:13:01,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:13:01,528 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:13:01,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [762910901] [2023-12-19 08:13:01,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:13:01,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:13:01,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:13:01,530 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:13:01,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 08:13:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:13:01,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 08:13:01,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:13:01,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 669 proven. 33 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2023-12-19 08:13:01,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:13:01,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 42 proven. 33 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-12-19 08:13:01,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:13:01,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869956503] [2023-12-19 08:13:01,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:13:01,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762910901] [2023-12-19 08:13:01,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762910901] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:13:01,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:13:01,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 08:13:01,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477347728] [2023-12-19 08:13:01,867 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:13:01,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 08:13:01,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:13:01,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 08:13:01,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 08:13:01,868 INFO L87 Difference]: Start difference. First operand 455 states and 662 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-12-19 08:13:02,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:13:02,026 INFO L93 Difference]: Finished difference Result 714 states and 1026 transitions. [2023-12-19 08:13:02,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 08:13:02,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 171 [2023-12-19 08:13:02,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:13:02,039 INFO L225 Difference]: With dead ends: 714 [2023-12-19 08:13:02,039 INFO L226 Difference]: Without dead ends: 234 [2023-12-19 08:13:02,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 334 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 08:13:02,041 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 140 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 08:13:02,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 191 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 08:13:02,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-12-19 08:13:02,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 226. [2023-12-19 08:13:02,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 160 states have (on average 1.28125) internal successors, (205), 163 states have internal predecessors, (205), 56 states have call successors, (56), 9 states have call predecessors, (56), 9 states have return successors, (56), 53 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-19 08:13:02,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 317 transitions. [2023-12-19 08:13:02,062 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 317 transitions. Word has length 171 [2023-12-19 08:13:02,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:13:02,062 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 317 transitions. [2023-12-19 08:13:02,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-12-19 08:13:02,062 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 317 transitions. [2023-12-19 08:13:02,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 08:13:02,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:13:02,064 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:13:02,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 08:13:02,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:13:02,271 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:13:02,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:13:02,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1760114457, now seen corresponding path program 1 times [2023-12-19 08:13:02,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:13:02,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906096562] [2023-12-19 08:13:02,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:13:02,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:13:02,298 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:13:02,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [139898386] [2023-12-19 08:13:02,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:13:02,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:13:02,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:13:02,310 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:13:02,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 08:13:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:13:02,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-19 08:13:02,479 INFO L285 TraceCheckSpWp]: Computing forward predicates...