/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-67.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 22:48:41,659 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 22:48:41,700 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 22:48:41,703 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 22:48:41,703 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 22:48:41,717 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 22:48:41,718 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 22:48:41,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 22:48:41,718 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 22:48:41,719 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 22:48:41,719 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 22:48:41,719 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 22:48:41,719 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 22:48:41,720 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 22:48:41,720 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 22:48:41,720 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 22:48:41,720 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 22:48:41,721 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 22:48:41,721 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 22:48:41,721 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 22:48:41,721 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 22:48:41,722 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 22:48:41,722 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 22:48:41,722 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 22:48:41,722 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 22:48:41,722 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 22:48:41,723 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 22:48:41,723 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 22:48:41,723 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 22:48:41,723 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 22:48:41,723 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 22:48:41,724 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 22:48:41,724 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 22:48:41,724 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 22:48:41,724 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 22:48:41,724 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 22:48:41,724 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 22:48:41,724 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 22:48:41,725 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 22:48:41,725 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 22:48:41,725 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 22:48:41,725 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 22:48:41,725 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 22:48:41,725 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 22:48:41,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 22:48:41,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 22:48:41,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 22:48:41,932 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 22:48:41,932 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 22:48:41,933 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-67.i [2023-12-20 22:48:43,013 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 22:48:43,161 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 22:48:43,161 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-67.i [2023-12-20 22:48:43,170 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b98b13023/bc1c948ab8af411bbe3388d3f54d72c9/FLAG73d012333 [2023-12-20 22:48:43,181 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b98b13023/bc1c948ab8af411bbe3388d3f54d72c9 [2023-12-20 22:48:43,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 22:48:43,184 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 22:48:43,184 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 22:48:43,185 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 22:48:43,188 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 22:48:43,188 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 10:48:43" (1/1) ... [2023-12-20 22:48:43,189 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1807ab5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:48:43, skipping insertion in model container [2023-12-20 22:48:43,189 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 10:48:43" (1/1) ... [2023-12-20 22:48:43,221 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 22:48:43,335 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_loopvsstraightlinecode_100-while_file-67.i[916,929] [2023-12-20 22:48:43,407 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 22:48:43,416 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 22:48:43,423 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_loopvsstraightlinecode_100-while_file-67.i[916,929] [2023-12-20 22:48:43,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 22:48:43,465 INFO L206 MainTranslator]: Completed translation [2023-12-20 22:48:43,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:48:43 WrapperNode [2023-12-20 22:48:43,465 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 22:48:43,466 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 22:48:43,466 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 22:48:43,466 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 22:48:43,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:48:43" (1/1) ... [2023-12-20 22:48:43,478 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:48:43" (1/1) ... [2023-12-20 22:48:43,510 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 222 [2023-12-20 22:48:43,511 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 22:48:43,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 22:48:43,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 22:48:43,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 22:48:43,519 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:48:43" (1/1) ... [2023-12-20 22:48:43,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:48:43" (1/1) ... [2023-12-20 22:48:43,522 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:48:43" (1/1) ... [2023-12-20 22:48:43,534 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]. [2023-12-20 22:48:43,534 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:48:43" (1/1) ... [2023-12-20 22:48:43,535 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:48:43" (1/1) ... [2023-12-20 22:48:43,543 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:48:43" (1/1) ... [2023-12-20 22:48:43,546 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:48:43" (1/1) ... [2023-12-20 22:48:43,549 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:48:43" (1/1) ... [2023-12-20 22:48:43,550 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:48:43" (1/1) ... [2023-12-20 22:48:43,555 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 22:48:43,555 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 22:48:43,555 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 22:48:43,555 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 22:48:43,556 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:48:43" (1/1) ... [2023-12-20 22:48:43,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 22:48:43,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:48:43,597 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) [2023-12-20 22:48:43,615 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 [2023-12-20 22:48:43,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 22:48:43,620 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 22:48:43,620 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 22:48:43,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 22:48:43,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 22:48:43,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 22:48:43,681 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 22:48:43,682 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 22:48:44,023 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 22:48:44,102 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 22:48:44,102 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 22:48:44,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 10:48:44 BoogieIcfgContainer [2023-12-20 22:48:44,103 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 22:48:44,104 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 22:48:44,104 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 22:48:44,106 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 22:48:44,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 10:48:43" (1/3) ... [2023-12-20 22:48:44,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fdaff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 10:48:44, skipping insertion in model container [2023-12-20 22:48:44,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:48:43" (2/3) ... [2023-12-20 22:48:44,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fdaff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 10:48:44, skipping insertion in model container [2023-12-20 22:48:44,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 10:48:44" (3/3) ... [2023-12-20 22:48:44,108 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-67.i [2023-12-20 22:48:44,120 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 22:48:44,120 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 22:48:44,157 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 22:48:44,162 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;@3dc465c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 22:48:44,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 22:48:44,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 58 states have (on average 1.5) internal successors, (87), 59 states have internal predecessors, (87), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-20 22:48:44,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-20 22:48:44,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:48:44,183 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:48:44,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:48:44,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:48:44,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1656579012, now seen corresponding path program 1 times [2023-12-20 22:48:44,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:48:44,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938831176] [2023-12-20 22:48:44,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:48:44,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:48:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:48:44,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:48:44,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938831176] [2023-12-20 22:48:44,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 22:48:44,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279754043] [2023-12-20 22:48:44,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:48:44,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:48:44,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:48:44,347 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) [2023-12-20 22:48:44,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 22:48:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:48:44,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 22:48:44,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:48:44,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2023-12-20 22:48:44,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 22:48:44,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279754043] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:48:44,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:48:44,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 22:48:44,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230929324] [2023-12-20 22:48:44,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:48:44,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 22:48:44,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:48:44,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 22:48:44,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 22:48:44,634 INFO L87 Difference]: Start difference. First operand has 92 states, 58 states have (on average 1.5) internal successors, (87), 59 states have internal predecessors, (87), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-20 22:48:44,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:48:44,687 INFO L93 Difference]: Finished difference Result 181 states and 327 transitions. [2023-12-20 22:48:44,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 22:48:44,689 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 196 [2023-12-20 22:48:44,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:48:44,695 INFO L225 Difference]: With dead ends: 181 [2023-12-20 22:48:44,695 INFO L226 Difference]: Without dead ends: 90 [2023-12-20 22:48:44,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 22:48:44,703 INFO L413 NwaCegarLoop]: 141 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, 141 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 [2023-12-20 22:48:44,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 141 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 22:48:44,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-20 22:48:44,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-12-20 22:48:44,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 57 states have internal predecessors, (82), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-20 22:48:44,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 144 transitions. [2023-12-20 22:48:44,750 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 144 transitions. Word has length 196 [2023-12-20 22:48:44,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:48:44,751 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 144 transitions. [2023-12-20 22:48:44,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-20 22:48:44,751 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 144 transitions. [2023-12-20 22:48:44,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-20 22:48:44,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:48:44,758 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:48:44,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 22:48:44,963 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 [2023-12-20 22:48:44,964 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:48:44,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:48:44,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1446000270, now seen corresponding path program 1 times [2023-12-20 22:48:44,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:48:44,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111628989] [2023-12-20 22:48:44,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:48:44,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:48:45,035 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:48:45,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560030701] [2023-12-20 22:48:45,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:48:45,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:48:45,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:48:45,047 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) [2023-12-20 22:48:45,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 22:48:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:48:45,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 22:48:45,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:48:45,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-20 22:48:45,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 22:48:45,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:48:45,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111628989] [2023-12-20 22:48:45,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:48:45,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560030701] [2023-12-20 22:48:45,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560030701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:48:45,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:48:45,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 22:48:45,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322672396] [2023-12-20 22:48:45,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:48:45,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 22:48:45,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:48:45,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 22:48:45,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 22:48:45,266 INFO L87 Difference]: Start difference. First operand 90 states and 144 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-20 22:48:45,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:48:45,358 INFO L93 Difference]: Finished difference Result 264 states and 422 transitions. [2023-12-20 22:48:45,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 22:48:45,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 196 [2023-12-20 22:48:45,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:48:45,364 INFO L225 Difference]: With dead ends: 264 [2023-12-20 22:48:45,364 INFO L226 Difference]: Without dead ends: 175 [2023-12-20 22:48:45,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 22:48:45,367 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 124 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 22:48:45,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 344 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 22:48:45,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-12-20 22:48:45,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2023-12-20 22:48:45,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 108 states have (on average 1.3703703703703705) internal successors, (148), 108 states have internal predecessors, (148), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-20 22:48:45,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 272 transitions. [2023-12-20 22:48:45,403 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 272 transitions. Word has length 196 [2023-12-20 22:48:45,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:48:45,404 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 272 transitions. [2023-12-20 22:48:45,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-20 22:48:45,405 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 272 transitions. [2023-12-20 22:48:45,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-20 22:48:45,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:48:45,407 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:48:45,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 22:48:45,613 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 [2023-12-20 22:48:45,613 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:48:45,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:48:45,614 INFO L85 PathProgramCache]: Analyzing trace with hash 59578287, now seen corresponding path program 1 times [2023-12-20 22:48:45,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:48:45,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637689708] [2023-12-20 22:48:45,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:48:45,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:48:45,662 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:48:45,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2083002329] [2023-12-20 22:48:45,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:48:45,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:48:45,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:48:45,671 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) [2023-12-20 22:48:45,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 22:48:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:48:45,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 22:48:45,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:48:45,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-20 22:48:45,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 22:48:45,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:48:45,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637689708] [2023-12-20 22:48:45,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:48:45,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083002329] [2023-12-20 22:48:45,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083002329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:48:45,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:48:45,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 22:48:45,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91889075] [2023-12-20 22:48:45,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:48:45,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 22:48:45,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:48:45,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 22:48:45,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 22:48:45,997 INFO L87 Difference]: Start difference. First operand 173 states and 272 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-20 22:48:46,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:48:46,114 INFO L93 Difference]: Finished difference Result 520 states and 816 transitions. [2023-12-20 22:48:46,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 22:48:46,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 197 [2023-12-20 22:48:46,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:48:46,117 INFO L225 Difference]: With dead ends: 520 [2023-12-20 22:48:46,117 INFO L226 Difference]: Without dead ends: 348 [2023-12-20 22:48:46,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 22:48:46,118 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 209 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 22:48:46,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 554 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 22:48:46,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-12-20 22:48:46,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 335. [2023-12-20 22:48:46,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 206 states have (on average 1.3592233009708738) internal successors, (280), 206 states have internal predecessors, (280), 124 states have call successors, (124), 4 states have call predecessors, (124), 4 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-20 22:48:46,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 528 transitions. [2023-12-20 22:48:46,143 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 528 transitions. Word has length 197 [2023-12-20 22:48:46,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:48:46,143 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 528 transitions. [2023-12-20 22:48:46,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-20 22:48:46,143 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 528 transitions. [2023-12-20 22:48:46,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-20 22:48:46,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:48:46,145 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:48:46,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 22:48:46,350 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 [2023-12-20 22:48:46,351 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:48:46,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:48:46,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1367586756, now seen corresponding path program 1 times [2023-12-20 22:48:46,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:48:46,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417999255] [2023-12-20 22:48:46,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:48:46,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:48:46,389 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:48:46,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [83020382] [2023-12-20 22:48:46,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:48:46,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:48:46,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:48:46,390 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) [2023-12-20 22:48:46,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 22:48:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:48:46,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-20 22:48:46,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:48:55,897 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-20 22:49:32,674 WARN L293 SmtUtils]: Spent 32.71s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 22:49:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 804 proven. 63 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2023-12-20 22:49:32,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 22:50:32,412 WARN L293 SmtUtils]: Spent 44.50s on a formula simplification. DAG size of input: 95 DAG size of output: 95 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 22:52:12,471 WARN L293 SmtUtils]: Spent 46.96s on a formula simplification that was a NOOP. DAG size: 101 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 22:53:29,864 WARN L293 SmtUtils]: Spent 54.34s on a formula simplification that was a NOOP. DAG size: 101 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 22:55:40,615 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-20 22:58:08,278 WARN L293 SmtUtils]: Spent 1.48m on a formula simplification. DAG size of input: 145 DAG size of output: 141 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 22:59:52,186 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse9 (mod c_~var_1_16~0 65536)) (.cse8 (mod c_~var_1_20~0 65536))) (let ((.cse3 (mod c_~var_1_34~0 4294967296)) (.cse42 (+ .cse8 1)) (.cse11 (< (+ .cse8 .cse9) 65536)) (.cse18 (+ 4294901760 .cse8)) (.cse2 (mod c_~last_1_var_1_25~0 4294967296))) (let ((.cse5 (and (forall ((v_y_8 Int) (v_z_8 Int)) (let ((.cse45 (* v_y_8 4294967296)) (.cse46 (* 4294967295 v_z_8))) (or (< (+ .cse45 .cse46) 0) (< 4294967295 v_z_8) (< .cse9 (+ .cse45 .cse46 1)) (< (+ .cse8 v_z_8 .cse9) (+ .cse2 4294967296))))) (forall ((v_y_8 Int) (v_z_8 Int)) (let ((.cse47 (* v_y_8 4294967296)) (.cse48 (* 4294967295 v_z_8))) (or (< (+ .cse47 .cse48) 0) (< v_z_8 0) (< 4294967295 (+ v_z_8 .cse9)) (< (+ .cse8 v_z_8 .cse9) .cse2) (< .cse9 (+ .cse47 .cse48 1))))) (or (forall ((v_y_8 Int) (v_z_8 Int)) (let ((.cse49 (* v_y_8 4294967296)) (.cse50 (* 4294967295 v_z_8))) (or (< (+ .cse8 v_z_8 .cse9) (+ 65536 .cse2)) (< (+ .cse49 .cse50) 0) (< 4294967295 v_z_8) (< .cse9 (+ .cse49 .cse50 1))))) .cse11) (<= .cse42 .cse2) (or .cse11 (< .cse18 .cse2)))) (.cse21 (< .cse2 (+ .cse3 1))) (.cse0 (and (or .cse11 (forall ((v_y_8 Int) (v_z_8 Int)) (let ((.cse38 (* v_y_8 4294967296)) (.cse39 (* 4294967295 v_z_8))) (or (< (+ .cse8 v_z_8 .cse9) (+ .cse3 65536)) (< (+ .cse38 .cse39) 0) (< 4294967295 v_z_8) (< .cse9 (+ .cse38 .cse39 1)))))) (forall ((v_y_8 Int) (v_z_8 Int)) (let ((.cse40 (* v_y_8 4294967296)) (.cse41 (* 4294967295 v_z_8))) (or (< (+ .cse40 .cse41) 0) (< 4294967295 v_z_8) (< (+ .cse8 v_z_8 .cse9) (+ .cse3 4294967296)) (< .cse9 (+ .cse40 .cse41 1))))) (<= .cse42 .cse3) (or (< .cse18 .cse3) .cse11) (forall ((v_y_8 Int) (v_z_8 Int)) (let ((.cse43 (* v_y_8 4294967296)) (.cse44 (* 4294967295 v_z_8))) (or (< (+ .cse8 v_z_8 .cse9) .cse3) (< (+ .cse43 .cse44) 0) (< v_z_8 0) (< 4294967295 (+ v_z_8 .cse9)) (< .cse9 (+ .cse43 .cse44 1))))))) (.cse22 (< .cse3 .cse2))) (and (or .cse0 (forall ((~var_1_25~0 Int)) (let ((.cse1 (mod (* ~var_1_25~0 ~var_1_25~0) 4294967296))) (or (< .cse1 .cse2) (< .cse3 (+ .cse1 1)))))) (or (forall ((~var_1_25~0 Int)) (let ((.cse4 (mod (* ~var_1_25~0 ~var_1_25~0) 4294967296))) (or (< .cse4 .cse3) (< .cse2 (+ .cse4 1))))) .cse5) (or (and (forall ((~var_1_25~0 Int) (v_y_8 Int) (v_z_8 Int)) (let ((.cse10 (mod (* ~var_1_25~0 ~var_1_25~0) 4294967296)) (.cse6 (* v_y_8 4294967296)) (.cse7 (* 4294967295 v_z_8))) (or (< (+ .cse6 .cse7) 0) (< 4294967295 v_z_8) (< (+ .cse8 v_z_8 .cse9) (+ .cse10 4294967296)) (< v_z_8 (+ .cse10 4294901761)) (< .cse10 .cse2) (< .cse9 (+ .cse6 .cse7 1))))) (or .cse11 (forall ((~var_1_25~0 Int) (v_y_8 Int) (v_z_8 Int)) (let ((.cse12 (mod (* ~var_1_25~0 ~var_1_25~0) 4294967296)) (.cse13 (* v_y_8 4294967296)) (.cse14 (* 4294967295 v_z_8))) (or (< (+ .cse8 v_z_8 .cse9) (+ 65536 .cse12)) (< (+ .cse13 .cse14) 0) (< v_z_8 0) (< 4294967295 v_z_8) (< .cse12 .cse2) (< .cse9 (+ .cse13 .cse14 1)))))) (forall ((v_y_8 Int) (v_z_8 Int)) (let ((.cse16 (* v_y_8 4294967296)) (.cse17 (* 4294967295 v_z_8))) (or (forall ((~var_1_25~0 Int)) (let ((.cse15 (mod (* ~var_1_25~0 ~var_1_25~0) 4294967296))) (or (< (+ .cse8 v_z_8 .cse9) .cse15) (< (+ v_z_8 65535) .cse15) (< .cse15 .cse2)))) (< (+ .cse16 .cse17) 0) (< v_z_8 0) (< 4294967295 (+ v_z_8 .cse9)) (< .cse9 (+ .cse16 .cse17 1))))) (or (forall ((~var_1_25~0 Int)) (let ((.cse19 (mod (* ~var_1_25~0 ~var_1_25~0) 4294967296))) (or (< .cse18 .cse19) (< .cse19 .cse2)))) .cse11) (forall ((~var_1_25~0 Int)) (let ((.cse20 (mod (* ~var_1_25~0 ~var_1_25~0) 4294967296))) (or (< .cse8 .cse20) (< .cse20 .cse2))))) .cse21) (or .cse22 (and (forall ((v_y_8 Int) (v_z_8 Int)) (let ((.cse23 (* v_y_8 4294967296)) (.cse24 (* 4294967295 v_z_8))) (or (< (+ .cse23 .cse24) 0) (< 4294967295 v_z_8) (< .cse9 (+ .cse23 .cse24 1)) (forall ((~var_1_25~0 Int)) (let ((.cse25 (mod (* ~var_1_25~0 ~var_1_25~0) 4294967296))) (or (< .cse25 .cse3) (< (+ .cse8 v_z_8 .cse9) (+ 4295032832 .cse25)))))))) (or .cse11 (forall ((~var_1_25~0 Int) (v_y_8 Int) (v_z_8 Int)) (let ((.cse26 (mod (* ~var_1_25~0 ~var_1_25~0) 4294967296)) (.cse27 (* v_y_8 4294967296)) (.cse28 (* 4294967295 v_z_8))) (or (< .cse26 .cse3) (< (+ .cse8 v_z_8 .cse9) (+ 65536 .cse26)) (< (+ .cse27 .cse28) 0) (< v_z_8 0) (< 4294967295 v_z_8) (< .cse9 (+ .cse27 .cse28 1)))))) (or .cse11 (forall ((~var_1_25~0 Int)) (let ((.cse29 (mod (* ~var_1_25~0 ~var_1_25~0) 4294967296))) (or (< .cse29 .cse3) (< .cse18 .cse29))))) (forall ((v_y_8 Int) (v_z_8 Int)) (let ((.cse30 (* v_y_8 4294967296)) (.cse31 (* 4294967295 v_z_8))) (or (< (+ .cse30 .cse31) 0) (< v_z_8 0) (< 4294967295 (+ v_z_8 .cse9)) (forall ((~var_1_25~0 Int)) (let ((.cse32 (mod (* ~var_1_25~0 ~var_1_25~0) 4294967296))) (or (< .cse32 .cse3) (< (+ .cse8 v_z_8 .cse9) .cse32) (< (+ v_z_8 65535) .cse32)))) (< .cse9 (+ .cse30 .cse31 1))))) (forall ((v_y_8 Int) (v_z_8 Int)) (let ((.cse33 (* v_y_8 4294967296)) (.cse34 (* 4294967295 v_z_8))) (or (< (+ .cse33 .cse34) 0) (forall ((~var_1_25~0 Int)) (let ((.cse35 (mod (* ~var_1_25~0 ~var_1_25~0) 4294967296))) (or (< .cse35 .cse3) (< (+ .cse8 v_z_8 .cse9) (+ .cse35 4294967296)) (< v_z_8 (+ .cse35 4294901761))))) (< 4294967295 v_z_8) (< .cse9 (+ .cse33 .cse34 1))))) (forall ((~var_1_25~0 Int)) (let ((.cse36 (mod (* ~var_1_25~0 ~var_1_25~0) 4294967296))) (or (< .cse36 .cse3) (< .cse8 .cse36)))))) (or (forall ((~var_1_25~0 Int)) (let ((.cse37 (+ (mod (* ~var_1_25~0 ~var_1_25~0) 4294967296) 1))) (or (< .cse3 .cse37) (< .cse2 .cse37)))) (and (or .cse5 .cse21) (or .cse0 .cse22))))))) is different from false [2023-12-20 23:00:10,164 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-20 23:00:36,322 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-20 23:00:41,730 WARN L293 SmtUtils]: Spent 5.41s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-20 23:00:46,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 23:00:46,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417999255] [2023-12-20 23:00:46,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 23:00:46,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83020382] [2023-12-20 23:00:46,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83020382] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 23:00:46,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-20 23:00:46,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-12-20 23:00:46,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114979681] [2023-12-20 23:00:46,616 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-20 23:00:46,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-20 23:00:46,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 23:00:46,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-20 23:00:46,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=215, Unknown=14, NotChecked=30, Total=306 [2023-12-20 23:00:46,619 INFO L87 Difference]: Start difference. First operand 335 states and 528 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-20 23:03:14,147 WARN L293 SmtUtils]: Spent 1.01m on a formula simplification. DAG size of input: 42 DAG size of output: 41 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 23:03:18,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] Received shutdown request... [2023-12-20 23:03:21,713 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 [2023-12-20 23:03:21,738 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 23:03:22,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-20 23:03:22,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 493.4s TimeCoverageRelationStatistics Valid=230, Invalid=866, Unknown=30, NotChecked=64, Total=1190 [2023-12-20 23:03:22,398 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 662 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 93 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-20 23:03:22,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 600 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 795 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2023-12-20 23:03:22,399 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 23:03:22,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 23:03:22,600 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 [2023-12-20 23:03:22,600 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (335states) and FLOYD_HOARE automaton (currently 22 states, 12 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 35 known predicates. [2023-12-20 23:03:22,604 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-20 23:03:22,605 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 23:03:22,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 11:03:22 BoogieIcfgContainer [2023-12-20 23:03:22,607 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 23:03:22,607 INFO L158 Benchmark]: Toolchain (without parser) took 879423.36ms. Allocated memory was 179.3MB in the beginning and 257.9MB in the end (delta: 78.6MB). Free memory was 143.6MB in the beginning and 82.6MB in the end (delta: 61.0MB). Peak memory consumption was 141.2MB. Max. memory is 8.0GB. [2023-12-20 23:03:22,607 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 179.3MB. Free memory is still 134.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 23:03:22,607 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.08ms. Allocated memory is still 179.3MB. Free memory was 143.2MB in the beginning and 126.1MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-20 23:03:22,607 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.74ms. Allocated memory is still 179.3MB. Free memory was 126.1MB in the beginning and 121.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-20 23:03:22,608 INFO L158 Benchmark]: Boogie Preprocessor took 43.50ms. Allocated memory is still 179.3MB. Free memory was 121.9MB in the beginning and 114.5MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-20 23:03:22,608 INFO L158 Benchmark]: RCFGBuilder took 547.37ms. Allocated memory was 179.3MB in the beginning and 257.9MB in the end (delta: 78.6MB). Free memory was 114.5MB in the beginning and 227.3MB in the end (delta: -112.8MB). Peak memory consumption was 43.2MB. Max. memory is 8.0GB. [2023-12-20 23:03:22,608 INFO L158 Benchmark]: TraceAbstraction took 878502.77ms. Allocated memory is still 257.9MB. Free memory was 226.3MB in the beginning and 82.6MB in the end (delta: 143.7MB). Peak memory consumption was 144.2MB. Max. memory is 8.0GB. [2023-12-20 23:03:22,609 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 179.3MB. Free memory is still 134.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 281.08ms. Allocated memory is still 179.3MB. Free memory was 143.2MB in the beginning and 126.1MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 44.74ms. Allocated memory is still 179.3MB. Free memory was 126.1MB in the beginning and 121.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.50ms. Allocated memory is still 179.3MB. Free memory was 121.9MB in the beginning and 114.5MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * RCFGBuilder took 547.37ms. Allocated memory was 179.3MB in the beginning and 257.9MB in the end (delta: 78.6MB). Free memory was 114.5MB in the beginning and 227.3MB in the end (delta: -112.8MB). Peak memory consumption was 43.2MB. Max. memory is 8.0GB. * TraceAbstraction took 878502.77ms. Allocated memory is still 257.9MB. Free memory was 226.3MB in the beginning and 82.6MB in the end (delta: 143.7MB). Peak memory consumption was 144.2MB. 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 NwaCegarLoop was constructing difference of abstraction (335states) and FLOYD_HOARE automaton (currently 22 states, 12 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 35 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 92 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 878.5s, OverallIterations: 4, TraceHistogramMax: 31, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 156.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 995 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 995 mSDsluCounter, 1639 SdHoareTripleChecker+Invalid, 4.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1034 mSDsCounter, 169 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 847 IncrementalHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 169 mSolverCounterUnsat, 605 mSDtfsCounter, 847 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 830 GetRequests, 789 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 493.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=335occurred in iteration=3, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 720.3s InterpolantComputationTime, 983 NumberOfCodeBlocks, 983 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 783 ConstructedInterpolants, 1 QuantifiedInterpolants, 4100 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1885 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 7377/7440 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