/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_operatoramount_amount250_file-38.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:09:30,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:09:31,047 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:09:31,051 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:09:31,052 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:09:31,069 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:09:31,069 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:09:31,070 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:09:31,070 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:09:31,071 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:09:31,071 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:09:31,071 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:09:31,072 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:09:31,072 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:09:31,073 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:09:31,073 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:09:31,074 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:09:31,074 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:09:31,074 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:09:31,075 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:09:31,075 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:09:31,075 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:09:31,076 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:09:31,076 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:09:31,077 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:09:31,077 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:09:31,077 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:09:31,078 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:09:31,078 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:09:31,078 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:09:31,078 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:09:31,079 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:09:31,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:09:31,079 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:09:31,080 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:09:31,080 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:09:31,080 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:09:31,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:09:31,081 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:09:31,081 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:09:31,081 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:09:31,082 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:09:31,082 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:09:31,082 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:09:31,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:09:31,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:09:31,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:09:31,299 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:09:31,299 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:09:31,300 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-38.i [2023-12-15 21:09:32,406 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:09:32,672 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:09:32,673 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-38.i [2023-12-15 21:09:32,691 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43d37e9f3/d311b8e244a04f11ba8182e861ddc212/FLAG2f851940d [2023-12-15 21:09:32,703 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43d37e9f3/d311b8e244a04f11ba8182e861ddc212 [2023-12-15 21:09:32,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:09:32,706 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:09:32,707 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:09:32,707 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:09:32,711 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:09:32,712 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:09:32" (1/1) ... [2023-12-15 21:09:32,713 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@518ed89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:32, skipping insertion in model container [2023-12-15 21:09:32,713 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:09:32" (1/1) ... [2023-12-15 21:09:32,768 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:09:32,886 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_operatoramount_amount250_file-38.i[916,929] [2023-12-15 21:09:33,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:09:33,036 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:09:33,044 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_operatoramount_amount250_file-38.i[916,929] [2023-12-15 21:09:33,097 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:09:33,112 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:09:33,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:33 WrapperNode [2023-12-15 21:09:33,113 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:09:33,114 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:09:33,114 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:09:33,114 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:09:33,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:33" (1/1) ... [2023-12-15 21:09:33,137 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:33" (1/1) ... [2023-12-15 21:09:33,211 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 327 [2023-12-15 21:09:33,212 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:09:33,212 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:09:33,212 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:09:33,213 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:09:33,222 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:33" (1/1) ... [2023-12-15 21:09:33,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:33" (1/1) ... [2023-12-15 21:09:33,233 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:33" (1/1) ... [2023-12-15 21:09:33,276 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]. [2023-12-15 21:09:33,276 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:33" (1/1) ... [2023-12-15 21:09:33,276 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:33" (1/1) ... [2023-12-15 21:09:33,295 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:33" (1/1) ... [2023-12-15 21:09:33,299 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:33" (1/1) ... [2023-12-15 21:09:33,308 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:33" (1/1) ... [2023-12-15 21:09:33,314 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:33" (1/1) ... [2023-12-15 21:09:33,327 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:09:33,328 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:09:33,328 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:09:33,328 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:09:33,329 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:33" (1/1) ... [2023-12-15 21:09:33,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:09:33,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:33,361 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) [2023-12-15 21:09:33,383 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 [2023-12-15 21:09:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:09:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:09:33,396 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:09:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:09:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:09:33,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:09:33,556 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:09:33,559 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:09:34,185 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:09:34,236 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:09:34,236 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:09:34,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:09:34 BoogieIcfgContainer [2023-12-15 21:09:34,237 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:09:34,239 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:09:34,240 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:09:34,242 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:09:34,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:09:32" (1/3) ... [2023-12-15 21:09:34,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a25027e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:09:34, skipping insertion in model container [2023-12-15 21:09:34,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:33" (2/3) ... [2023-12-15 21:09:34,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a25027e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:09:34, skipping insertion in model container [2023-12-15 21:09:34,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:09:34" (3/3) ... [2023-12-15 21:09:34,246 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-38.i [2023-12-15 21:09:34,261 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:09:34,261 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:09:34,308 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:09:34,313 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;@7d16f380, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:09:34,314 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:09:34,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 90 states have (on average 1.5666666666666667) internal successors, (141), 91 states have internal predecessors, (141), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-15 21:09:34,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-12-15 21:09:34,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:09:34,338 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:09:34,339 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:09:34,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:09:34,344 INFO L85 PathProgramCache]: Analyzing trace with hash -112723981, now seen corresponding path program 1 times [2023-12-15 21:09:34,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:09:34,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396950795] [2023-12-15 21:09:34,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:34,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:09:34,596 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:09:34,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448243003] [2023-12-15 21:09:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:34,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:09:34,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:34,604 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) [2023-12-15 21:09:34,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:09:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:09:34,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:09:34,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:09:35,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-12-15 21:09:35,031 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:09:35,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:09:35,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396950795] [2023-12-15 21:09:35,032 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:09:35,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448243003] [2023-12-15 21:09:35,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448243003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:09:35,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:09:35,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:09:35,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711969974] [2023-12-15 21:09:35,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:09:35,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:09:35,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:09:35,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:09:35,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:09:35,070 INFO L87 Difference]: Start difference. First operand has 131 states, 90 states have (on average 1.5666666666666667) internal successors, (141), 91 states have internal predecessors, (141), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-12-15 21:09:35,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:09:35,181 INFO L93 Difference]: Finished difference Result 382 states and 713 transitions. [2023-12-15 21:09:35,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:09:35,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 251 [2023-12-15 21:09:35,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:09:35,194 INFO L225 Difference]: With dead ends: 382 [2023-12-15 21:09:35,194 INFO L226 Difference]: Without dead ends: 252 [2023-12-15 21:09:35,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:09:35,201 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 184 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:09:35,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 504 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:09:35,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-12-15 21:09:35,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 162. [2023-12-15 21:09:35,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 122 states have (on average 1.5245901639344261) internal successors, (186), 122 states have internal predecessors, (186), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-15 21:09:35,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 262 transitions. [2023-12-15 21:09:35,277 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 262 transitions. Word has length 251 [2023-12-15 21:09:35,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:09:35,279 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 262 transitions. [2023-12-15 21:09:35,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-12-15 21:09:35,284 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 262 transitions. [2023-12-15 21:09:35,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-15 21:09:35,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:09:35,298 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:09:35,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:09:35,499 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 [2023-12-15 21:09:35,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:09:35,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:09:35,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1355568102, now seen corresponding path program 1 times [2023-12-15 21:09:35,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:09:35,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223127367] [2023-12-15 21:09:35,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:35,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:09:35,587 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:09:35,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [42892243] [2023-12-15 21:09:35,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:35,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:09:35,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:35,591 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) [2023-12-15 21:09:35,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:09:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:09:35,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:09:35,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:09:35,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 937 proven. 21 refuted. 0 times theorem prover too weak. 1854 trivial. 0 not checked. [2023-12-15 21:09:35,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:09:36,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 90 proven. 21 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2023-12-15 21:09:36,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:09:36,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223127367] [2023-12-15 21:09:36,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:09:36,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42892243] [2023-12-15 21:09:36,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42892243] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:09:36,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:09:36,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:09:36,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970882843] [2023-12-15 21:09:36,039 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:09:36,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:09:36,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:09:36,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:09:36,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:09:36,042 INFO L87 Difference]: Start difference. First operand 162 states and 262 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 2 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2023-12-15 21:09:36,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:09:36,490 INFO L93 Difference]: Finished difference Result 375 states and 604 transitions. [2023-12-15 21:09:36,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:09:36,491 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 2 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 252 [2023-12-15 21:09:36,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:09:36,501 INFO L225 Difference]: With dead ends: 375 [2023-12-15 21:09:36,501 INFO L226 Difference]: Without dead ends: 214 [2023-12-15 21:09:36,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 496 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:09:36,505 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 154 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:09:36,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 581 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:09:36,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-12-15 21:09:36,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 213. [2023-12-15 21:09:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 142 states have (on average 1.443661971830986) internal successors, (205), 143 states have internal predecessors, (205), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-15 21:09:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 341 transitions. [2023-12-15 21:09:36,549 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 341 transitions. Word has length 252 [2023-12-15 21:09:36,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:09:36,550 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 341 transitions. [2023-12-15 21:09:36,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 2 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2023-12-15 21:09:36,550 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 341 transitions. [2023-12-15 21:09:36,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-15 21:09:36,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:09:36,557 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:09:36,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:09:36,764 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 [2023-12-15 21:09:36,764 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:09:36,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:09:36,765 INFO L85 PathProgramCache]: Analyzing trace with hash 961201316, now seen corresponding path program 1 times [2023-12-15 21:09:36,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:09:36,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423467627] [2023-12-15 21:09:36,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:36,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:09:36,838 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:09:36,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [401599696] [2023-12-15 21:09:36,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:36,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:09:36,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:36,849 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) [2023-12-15 21:09:36,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:09:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:09:37,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 21:09:37,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:09:38,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-12-15 21:09:38,163 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:09:38,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:09:38,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423467627] [2023-12-15 21:09:38,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:09:38,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401599696] [2023-12-15 21:09:38,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401599696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:09:38,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:09:38,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:09:38,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563952681] [2023-12-15 21:09:38,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:09:38,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:09:38,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:09:38,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:09:38,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:09:38,167 INFO L87 Difference]: Start difference. First operand 213 states and 341 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-12-15 21:09:38,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:09:38,435 INFO L93 Difference]: Finished difference Result 497 states and 791 transitions. [2023-12-15 21:09:38,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:09:38,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 252 [2023-12-15 21:09:38,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:09:38,439 INFO L225 Difference]: With dead ends: 497 [2023-12-15 21:09:38,439 INFO L226 Difference]: Without dead ends: 332 [2023-12-15 21:09:38,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:09:38,441 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 228 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:09:38,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 697 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:09:38,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-15 21:09:38,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 235. [2023-12-15 21:09:38,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 154 states have (on average 1.4090909090909092) internal successors, (217), 154 states have internal predecessors, (217), 76 states have call successors, (76), 4 states have call predecessors, (76), 4 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-15 21:09:38,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 369 transitions. [2023-12-15 21:09:38,470 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 369 transitions. Word has length 252 [2023-12-15 21:09:38,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:09:38,471 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 369 transitions. [2023-12-15 21:09:38,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-12-15 21:09:38,472 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 369 transitions. [2023-12-15 21:09:38,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-15 21:09:38,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:09:38,474 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:09:38,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:09:38,682 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 [2023-12-15 21:09:38,682 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:09:38,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:09:38,683 INFO L85 PathProgramCache]: Analyzing trace with hash 738404631, now seen corresponding path program 1 times [2023-12-15 21:09:38,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:09:38,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130499723] [2023-12-15 21:09:38,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:38,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:09:38,753 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:09:38,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1447087569] [2023-12-15 21:09:38,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:38,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:09:38,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:38,763 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) [2023-12-15 21:09:38,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:09:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:09:39,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 21:09:39,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:09:40,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 37 proven. 111 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2023-12-15 21:09:40,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:09:41,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:09:41,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130499723] [2023-12-15 21:09:41,127 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:09:41,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447087569] [2023-12-15 21:09:41,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447087569] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:09:41,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:09:41,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-15 21:09:41,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308718378] [2023-12-15 21:09:41,128 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 21:09:41,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 21:09:41,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:09:41,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 21:09:41,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:09:41,131 INFO L87 Difference]: Start difference. First operand 235 states and 369 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2023-12-15 21:09:42,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:09:42,131 INFO L93 Difference]: Finished difference Result 606 states and 955 transitions. [2023-12-15 21:09:42,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 21:09:42,133 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) Word has length 253 [2023-12-15 21:09:42,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:09:42,136 INFO L225 Difference]: With dead ends: 606 [2023-12-15 21:09:42,136 INFO L226 Difference]: Without dead ends: 441 [2023-12-15 21:09:42,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-12-15 21:09:42,138 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 600 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 21:09:42,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 945 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 21:09:42,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-12-15 21:09:42,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 323. [2023-12-15 21:09:42,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 241 states have (on average 1.4730290456431536) internal successors, (355), 241 states have internal predecessors, (355), 76 states have call successors, (76), 5 states have call predecessors, (76), 5 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-15 21:09:42,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 507 transitions. [2023-12-15 21:09:42,187 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 507 transitions. Word has length 253 [2023-12-15 21:09:42,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:09:42,190 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 507 transitions. [2023-12-15 21:09:42,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2023-12-15 21:09:42,190 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 507 transitions. [2023-12-15 21:09:42,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-12-15 21:09:42,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:09:42,193 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:09:42,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:09:42,400 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 [2023-12-15 21:09:42,401 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:09:42,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:09:42,401 INFO L85 PathProgramCache]: Analyzing trace with hash 174735474, now seen corresponding path program 1 times [2023-12-15 21:09:42,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:09:42,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649109455] [2023-12-15 21:09:42,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:42,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:09:42,458 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:09:42,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822030782] [2023-12-15 21:09:42,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:42,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:09:42,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:42,465 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) [2023-12-15 21:09:42,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:09:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:09:42,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-15 21:09:42,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:09:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 2097 proven. 387 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-12-15 21:09:49,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:10:23,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:10:23,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649109455] [2023-12-15 21:10:23,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:10:23,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822030782] [2023-12-15 21:10:23,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822030782] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:10:23,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:10:23,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2023-12-15 21:10:23,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470107720] [2023-12-15 21:10:23,265 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 21:10:23,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-15 21:10:23,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:10:23,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-15 21:10:23,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=731, Invalid=3300, Unknown=1, NotChecked=0, Total=4032 [2023-12-15 21:10:23,268 INFO L87 Difference]: Start difference. First operand 323 states and 507 transitions. Second operand has 52 states, 52 states have (on average 2.2115384615384617) internal successors, (115), 46 states have internal predecessors, (115), 14 states have call successors, (38), 14 states have call predecessors, (38), 17 states have return successors, (38), 12 states have call predecessors, (38), 14 states have call successors, (38) Received shutdown request... [2023-12-15 21:10:32,657 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:10:32,657 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:10:33,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:10:33,858 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-15 21:10:33,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-15 21:10:33,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3150 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=2336, Invalid=10095, Unknown=1, NotChecked=0, Total=12432 [2023-12-15 21:10:33,873 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 386 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 1858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 21:10:33,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 895 Invalid, 1858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 21:10:33,875 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:10:33,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 21:10:33,876 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-12-15 21:10:33,879 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-15 21:10:33,881 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:10:33,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:10:33 BoogieIcfgContainer [2023-12-15 21:10:33,883 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:10:33,884 INFO L158 Benchmark]: Toolchain (without parser) took 61177.51ms. Allocated memory was 198.2MB in the beginning and 448.8MB in the end (delta: 250.6MB). Free memory was 152.8MB in the beginning and 207.9MB in the end (delta: -55.2MB). Peak memory consumption was 196.0MB. Max. memory is 8.0GB. [2023-12-15 21:10:33,884 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 198.2MB. Free memory is still 155.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:10:33,884 INFO L158 Benchmark]: CACSL2BoogieTranslator took 405.82ms. Allocated memory is still 198.2MB. Free memory was 152.8MB in the beginning and 127.5MB in the end (delta: 25.3MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-15 21:10:33,885 INFO L158 Benchmark]: Boogie Procedure Inliner took 98.22ms. Allocated memory is still 198.2MB. Free memory was 127.5MB in the beginning and 114.5MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-15 21:10:33,885 INFO L158 Benchmark]: Boogie Preprocessor took 115.01ms. Allocated memory is still 198.2MB. Free memory was 114.5MB in the beginning and 83.4MB in the end (delta: 31.1MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2023-12-15 21:10:33,885 INFO L158 Benchmark]: RCFGBuilder took 908.37ms. Allocated memory is still 198.2MB. Free memory was 83.4MB in the beginning and 110.2MB in the end (delta: -26.7MB). Peak memory consumption was 11.6MB. Max. memory is 8.0GB. [2023-12-15 21:10:33,885 INFO L158 Benchmark]: TraceAbstraction took 59643.79ms. Allocated memory was 198.2MB in the beginning and 448.8MB in the end (delta: 250.6MB). Free memory was 109.1MB in the beginning and 207.9MB in the end (delta: -98.8MB). Peak memory consumption was 152.9MB. Max. memory is 8.0GB. [2023-12-15 21:10:33,887 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 198.2MB. Free memory is still 155.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 405.82ms. Allocated memory is still 198.2MB. Free memory was 152.8MB in the beginning and 127.5MB in the end (delta: 25.3MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 98.22ms. Allocated memory is still 198.2MB. Free memory was 127.5MB in the beginning and 114.5MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 115.01ms. Allocated memory is still 198.2MB. Free memory was 114.5MB in the beginning and 83.4MB in the end (delta: 31.1MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * RCFGBuilder took 908.37ms. Allocated memory is still 198.2MB. Free memory was 83.4MB in the beginning and 110.2MB in the end (delta: -26.7MB). Peak memory consumption was 11.6MB. Max. memory is 8.0GB. * TraceAbstraction took 59643.79ms. Allocated memory was 198.2MB in the beginning and 448.8MB in the end (delta: 250.6MB). Free memory was 109.1MB in the beginning and 207.9MB in the end (delta: -98.8MB). Peak memory consumption was 152.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 131 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.6s, OverallIterations: 5, TraceHistogramMax: 38, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 12.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1582 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1552 mSDsluCounter, 3622 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2544 mSDsCounter, 246 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3303 IncrementalHoareTripleChecker+Invalid, 3550 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 246 mSolverCounterUnsat, 1078 mSDtfsCounter, 3303 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1655 GetRequests, 1511 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3195 ImplicationChecksByTransitivity, 27.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=323occurred in iteration=4, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 306 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 44.1s InterpolantComputationTime, 1262 NumberOfCodeBlocks, 1262 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1508 ConstructedInterpolants, 10 QuantifiedInterpolants, 15431 SizeOfPredicates, 53 NumberOfNonLiveVariables, 3121 ConjunctsInSsa, 137 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 16332/16872 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown