/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_loopvsstraightlinecode_100-while_file-94.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 11:35:44,539 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 11:35:44,609 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 11:35:44,612 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 11:35:44,613 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 11:35:44,637 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 11:35:44,637 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 11:35:44,638 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 11:35:44,638 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 11:35:44,641 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 11:35:44,641 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 11:35:44,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 11:35:44,642 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 11:35:44,643 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 11:35:44,643 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 11:35:44,643 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 11:35:44,643 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 11:35:44,644 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 11:35:44,644 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 11:35:44,645 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 11:35:44,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 11:35:44,645 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 11:35:44,645 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 11:35:44,645 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 11:35:44,646 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 11:35:44,646 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 11:35:44,646 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 11:35:44,646 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 11:35:44,646 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 11:35:44,647 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 11:35:44,647 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 11:35:44,647 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 11:35:44,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 11:35:44,648 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 11:35:44,648 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 11:35:44,648 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 11:35:44,648 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 11:35:44,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 11:35:44,648 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 11:35:44,648 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 11:35:44,649 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 11:35:44,649 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 11:35:44,649 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 11:35:44,649 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 11:35:44,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 11:35:44,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 11:35:44,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 11:35:44,883 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 11:35:44,884 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 11:35:44,885 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-94.i [2023-12-19 11:35:46,153 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 11:35:46,347 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 11:35:46,347 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-94.i [2023-12-19 11:35:46,353 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/054d2d608/3d0cd6a868674d9a82ea00f83aa5ab9e/FLAGf9a1ff5b2 [2023-12-19 11:35:46,367 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/054d2d608/3d0cd6a868674d9a82ea00f83aa5ab9e [2023-12-19 11:35:46,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 11:35:46,370 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 11:35:46,370 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 11:35:46,370 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 11:35:46,373 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 11:35:46,374 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:35:46" (1/1) ... [2023-12-19 11:35:46,376 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ff25606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:35:46, skipping insertion in model container [2023-12-19 11:35:46,376 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:35:46" (1/1) ... [2023-12-19 11:35:46,433 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 11:35:46,573 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-94.i[916,929] [2023-12-19 11:35:46,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 11:35:46,668 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 11:35:46,681 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-94.i[916,929] [2023-12-19 11:35:46,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 11:35:46,789 INFO L206 MainTranslator]: Completed translation [2023-12-19 11:35:46,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:35:46 WrapperNode [2023-12-19 11:35:46,789 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 11:35:46,790 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 11:35:46,791 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 11:35:46,791 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 11:35:46,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:35:46" (1/1) ... [2023-12-19 11:35:46,811 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:35:46" (1/1) ... [2023-12-19 11:35:46,869 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 211 [2023-12-19 11:35:46,869 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 11:35:46,869 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 11:35:46,870 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 11:35:46,870 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 11:35:46,879 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:35:46" (1/1) ... [2023-12-19 11:35:46,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:35:46" (1/1) ... [2023-12-19 11:35:46,891 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:35:46" (1/1) ... [2023-12-19 11:35:46,915 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 11:35:46,916 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:35:46" (1/1) ... [2023-12-19 11:35:46,916 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:35:46" (1/1) ... [2023-12-19 11:35:46,934 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:35:46" (1/1) ... [2023-12-19 11:35:46,936 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:35:46" (1/1) ... [2023-12-19 11:35:46,938 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:35:46" (1/1) ... [2023-12-19 11:35:46,939 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:35:46" (1/1) ... [2023-12-19 11:35:46,949 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 11:35:46,950 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 11:35:46,950 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 11:35:46,950 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 11:35:46,950 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:35:46" (1/1) ... [2023-12-19 11:35:46,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 11:35:46,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:35:46,996 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 11:35:47,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 11:35:47,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 11:35:47,036 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 11:35:47,036 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 11:35:47,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 11:35:47,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 11:35:47,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 11:35:47,129 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 11:35:47,132 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 11:35:47,495 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 11:35:47,536 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 11:35:47,537 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 11:35:47,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:35:47 BoogieIcfgContainer [2023-12-19 11:35:47,537 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 11:35:47,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 11:35:47,539 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 11:35:47,541 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 11:35:47,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 11:35:46" (1/3) ... [2023-12-19 11:35:47,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca7dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:35:47, skipping insertion in model container [2023-12-19 11:35:47,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:35:46" (2/3) ... [2023-12-19 11:35:47,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca7dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:35:47, skipping insertion in model container [2023-12-19 11:35:47,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:35:47" (3/3) ... [2023-12-19 11:35:47,543 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-94.i [2023-12-19 11:35:47,556 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 11:35:47,556 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 11:35:47,588 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 11:35:47,594 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;@72170fb8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 11:35:47,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 11:35:47,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 54 states have (on average 1.5) internal successors, (81), 55 states have internal predecessors, (81), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-19 11:35:47,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-19 11:35:47,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:35:47,617 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 11:35:47,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:35:47,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:35:47,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1966468565, now seen corresponding path program 1 times [2023-12-19 11:35:47,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:35:47,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126107794] [2023-12-19 11:35:47,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:35:47,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:35:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:35:47,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:35:47,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126107794] [2023-12-19 11:35:47,840 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 11:35:47,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969173963] [2023-12-19 11:35:47,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:35:47,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:35:47,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:35:47,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 11:35:47,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 11:35:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:35:48,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 11:35:48,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:35:48,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2023-12-19 11:35:48,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:35:48,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969173963] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:35:48,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:35:48,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 11:35:48,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919863236] [2023-12-19 11:35:48,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:35:48,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 11:35:48,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:35:48,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 11:35:48,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 11:35:48,193 INFO L87 Difference]: Start difference. First operand has 84 states, 54 states have (on average 1.5) internal successors, (81), 55 states have internal predecessors, (81), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-19 11:35:48,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:35:48,254 INFO L93 Difference]: Finished difference Result 165 states and 295 transitions. [2023-12-19 11:35:48,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 11:35:48,255 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) Word has length 174 [2023-12-19 11:35:48,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:35:48,260 INFO L225 Difference]: With dead ends: 165 [2023-12-19 11:35:48,260 INFO L226 Difference]: Without dead ends: 82 [2023-12-19 11:35:48,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 11:35:48,265 INFO L413 NwaCegarLoop]: 127 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, 127 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 11:35:48,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 127 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 11:35:48,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-19 11:35:48,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-12-19 11:35:48,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 53 states have (on average 1.4339622641509433) internal successors, (76), 53 states have internal predecessors, (76), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-19 11:35:48,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 130 transitions. [2023-12-19 11:35:48,328 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 130 transitions. Word has length 174 [2023-12-19 11:35:48,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:35:48,328 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 130 transitions. [2023-12-19 11:35:48,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-19 11:35:48,330 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 130 transitions. [2023-12-19 11:35:48,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-19 11:35:48,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:35:48,334 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 11:35:48,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 11:35:48,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 11:35:48,541 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:35:48,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:35:48,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1789914451, now seen corresponding path program 1 times [2023-12-19 11:35:48,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:35:48,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980551865] [2023-12-19 11:35:48,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:35:48,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:35:48,593 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:35:48,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [766531665] [2023-12-19 11:35:48,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:35:48,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:35:48,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:35:48,605 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 11:35:48,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 11:35:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:35:48,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 11:35:48,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:35:48,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 11:35:48,850 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:35:48,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:35:48,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980551865] [2023-12-19 11:35:48,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:35:48,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766531665] [2023-12-19 11:35:48,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766531665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:35:48,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:35:48,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 11:35:48,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862400218] [2023-12-19 11:35:48,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:35:48,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 11:35:48,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:35:48,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 11:35:48,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 11:35:48,854 INFO L87 Difference]: Start difference. First operand 82 states and 130 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 11:35:49,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:35:49,005 INFO L93 Difference]: Finished difference Result 193 states and 304 transitions. [2023-12-19 11:35:49,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 11:35:49,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2023-12-19 11:35:49,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:35:49,008 INFO L225 Difference]: With dead ends: 193 [2023-12-19 11:35:49,008 INFO L226 Difference]: Without dead ends: 112 [2023-12-19 11:35:49,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 11:35:49,010 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 74 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 11:35:49,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 366 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 11:35:49,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-19 11:35:49,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2023-12-19 11:35:49,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 65 states have (on average 1.3384615384615384) internal successors, (87), 66 states have internal predecessors, (87), 43 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-19 11:35:49,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 173 transitions. [2023-12-19 11:35:49,026 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 173 transitions. Word has length 174 [2023-12-19 11:35:49,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:35:49,027 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 173 transitions. [2023-12-19 11:35:49,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 11:35:49,028 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 173 transitions. [2023-12-19 11:35:49,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 11:35:49,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:35:49,030 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 11:35:49,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 11:35:49,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 11:35:49,237 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:35:49,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:35:49,238 INFO L85 PathProgramCache]: Analyzing trace with hash 708092337, now seen corresponding path program 1 times [2023-12-19 11:35:49,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:35:49,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844892510] [2023-12-19 11:35:49,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:35:49,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:35:49,304 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:35:49,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438095509] [2023-12-19 11:35:49,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:35:49,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:35:49,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:35:49,305 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 11:35:49,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 11:35:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:35:49,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 11:35:49,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:35:49,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 11:35:49,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:35:49,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:35:49,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844892510] [2023-12-19 11:35:49,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:35:49,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438095509] [2023-12-19 11:35:49,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438095509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:35:49,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:35:49,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 11:35:49,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525968453] [2023-12-19 11:35:49,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:35:49,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 11:35:49,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:35:49,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 11:35:49,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 11:35:49,854 INFO L87 Difference]: Start difference. First operand 111 states and 173 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 11:35:49,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:35:49,903 INFO L93 Difference]: Finished difference Result 280 states and 433 transitions. [2023-12-19 11:35:49,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 11:35:49,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2023-12-19 11:35:49,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:35:49,906 INFO L225 Difference]: With dead ends: 280 [2023-12-19 11:35:49,906 INFO L226 Difference]: Without dead ends: 195 [2023-12-19 11:35:49,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 11:35:49,907 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 46 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 11:35:49,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 350 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 11:35:49,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-12-19 11:35:49,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 192. [2023-12-19 11:35:49,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 117 states have (on average 1.3247863247863247) internal successors, (155), 118 states have internal predecessors, (155), 70 states have call successors, (70), 4 states have call predecessors, (70), 4 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-19 11:35:49,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 295 transitions. [2023-12-19 11:35:49,924 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 295 transitions. Word has length 175 [2023-12-19 11:35:49,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:35:49,924 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 295 transitions. [2023-12-19 11:35:49,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 11:35:49,924 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 295 transitions. [2023-12-19 11:35:49,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 11:35:49,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:35:49,926 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 11:35:49,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 11:35:50,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:35:50,131 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:35:50,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:35:50,132 INFO L85 PathProgramCache]: Analyzing trace with hash 926947055, now seen corresponding path program 1 times [2023-12-19 11:35:50,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:35:50,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008226446] [2023-12-19 11:35:50,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:35:50,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:35:50,212 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:35:50,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539071497] [2023-12-19 11:35:50,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:35:50,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:35:50,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:35:50,214 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 11:35:50,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 11:35:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:35:50,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 11:35:50,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:35:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 11:35:50,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:35:50,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:35:50,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008226446] [2023-12-19 11:35:50,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:35:50,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539071497] [2023-12-19 11:35:50,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539071497] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:35:50,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:35:50,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 11:35:50,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63383929] [2023-12-19 11:35:50,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:35:50,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 11:35:50,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:35:50,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 11:35:50,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 11:35:50,725 INFO L87 Difference]: Start difference. First operand 192 states and 295 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 11:35:50,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:35:50,962 INFO L93 Difference]: Finished difference Result 473 states and 719 transitions. [2023-12-19 11:35:50,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 11:35:50,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2023-12-19 11:35:50,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:35:50,965 INFO L225 Difference]: With dead ends: 473 [2023-12-19 11:35:50,965 INFO L226 Difference]: Without dead ends: 307 [2023-12-19 11:35:50,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 11:35:50,966 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 145 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 11:35:50,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 459 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 11:35:50,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-12-19 11:35:51,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 263. [2023-12-19 11:35:51,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 176 states have (on average 1.375) internal successors, (242), 176 states have internal predecessors, (242), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-19 11:35:51,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 404 transitions. [2023-12-19 11:35:51,023 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 404 transitions. Word has length 175 [2023-12-19 11:35:51,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:35:51,026 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 404 transitions. [2023-12-19 11:35:51,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 11:35:51,026 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 404 transitions. [2023-12-19 11:35:51,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 11:35:51,029 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:35:51,030 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 11:35:51,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 11:35:51,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:35:51,236 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:35:51,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:35:51,236 INFO L85 PathProgramCache]: Analyzing trace with hash 117600429, now seen corresponding path program 1 times [2023-12-19 11:35:51,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:35:51,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941720096] [2023-12-19 11:35:51,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:35:51,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:35:51,272 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:35:51,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391940125] [2023-12-19 11:35:51,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:35:51,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:35:51,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:35:51,281 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 11:35:51,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 11:35:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:35:51,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 11:35:51,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:35:52,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 656 proven. 27 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2023-12-19 11:35:52,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 11:35:53,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:35:53,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941720096] [2023-12-19 11:35:53,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:35:53,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391940125] [2023-12-19 11:35:53,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391940125] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 11:35:53,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 11:35:53,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-12-19 11:35:53,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605242710] [2023-12-19 11:35:53,672 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 11:35:53,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 11:35:53,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:35:53,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 11:35:53,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-12-19 11:35:53,673 INFO L87 Difference]: Start difference. First operand 263 states and 404 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 11 states have internal predecessors, (58), 4 states have call successors, (27), 4 states have call predecessors, (27), 6 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2023-12-19 11:35:56,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:35:56,486 INFO L93 Difference]: Finished difference Result 845 states and 1243 transitions. [2023-12-19 11:35:56,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-19 11:35:56,486 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 11 states have internal predecessors, (58), 4 states have call successors, (27), 4 states have call predecessors, (27), 6 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 175 [2023-12-19 11:35:56,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:35:56,489 INFO L225 Difference]: With dead ends: 845 [2023-12-19 11:35:56,489 INFO L226 Difference]: Without dead ends: 659 [2023-12-19 11:35:56,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=400, Invalid=1160, Unknown=0, NotChecked=0, Total=1560 [2023-12-19 11:35:56,491 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 371 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 11:35:56,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 886 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 11:35:56,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-12-19 11:35:56,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 420. [2023-12-19 11:35:56,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 295 states have (on average 1.3661016949152542) internal successors, (403), 295 states have internal predecessors, (403), 108 states have call successors, (108), 16 states have call predecessors, (108), 16 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-19 11:35:56,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 619 transitions. [2023-12-19 11:35:56,540 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 619 transitions. Word has length 175 [2023-12-19 11:35:56,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:35:56,540 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 619 transitions. [2023-12-19 11:35:56,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 11 states have internal predecessors, (58), 4 states have call successors, (27), 4 states have call predecessors, (27), 6 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2023-12-19 11:35:56,540 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 619 transitions. [2023-12-19 11:35:56,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 11:35:56,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:35:56,542 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 11:35:56,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 11:35:56,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:35:56,750 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:35:56,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:35:56,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1185112493, now seen corresponding path program 1 times [2023-12-19 11:35:56,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:35:56,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801480646] [2023-12-19 11:35:56,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:35:56,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:35:56,794 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:35:56,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209628659] [2023-12-19 11:35:56,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:35:56,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:35:56,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:35:56,809 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 11:35:56,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 11:35:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:35:56,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-19 11:35:57,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:35:58,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 632 proven. 93 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2023-12-19 11:35:58,419 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 11:36:03,326 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (mod c_~var_1_26~0 65536))) (let ((.cse6 (< c_~var_1_27~0 0)) (.cse5 (< 0 (+ c_~var_1_27~0 1))) (.cse2 (+ .cse3 c_~var_1_27~0)) (.cse0 (mod c_~var_1_32~0 65536)) (.cse7 (forall ((~var_1_19~0 Int)) (or (not (= (mod ~var_1_19~0 c_~var_1_27~0) 0)) (< c_~last_1_var_1_20~0 ~var_1_19~0) (< 255 ~var_1_19~0))))) (and (forall ((~var_1_19~0 Int)) (let ((.cse1 (mod ~var_1_19~0 c_~var_1_27~0))) (or (< ~var_1_19~0 0) (< c_~last_1_var_1_20~0 ~var_1_19~0) (< (+ .cse0 .cse1) .cse2) (< 255 ~var_1_19~0) (< (+ .cse0 c_~var_1_27~0 .cse1) .cse3)))) (forall ((~var_1_19~0 Int)) (let ((.cse4 (mod ~var_1_19~0 c_~var_1_27~0))) (or (< c_~last_1_var_1_20~0 ~var_1_19~0) (< (+ .cse0 .cse4) .cse2) (= .cse4 0) (< 0 (+ ~var_1_19~0 1)) (< (+ .cse0 c_~var_1_27~0 .cse4) .cse3)))) (forall ((~var_1_19~0 Int)) (or (< ~var_1_19~0 0) (< (+ .cse0 (mod ~var_1_19~0 c_~var_1_27~0)) .cse3) (< c_~last_1_var_1_20~0 ~var_1_19~0) (< 255 ~var_1_19~0))) (or (forall ((~var_1_19~0 Int)) (or (< c_~last_1_var_1_20~0 ~var_1_19~0) (< 255 ~var_1_19~0) (< (+ .cse0 c_~var_1_27~0 (mod ~var_1_19~0 c_~var_1_27~0)) .cse3))) .cse5) (or (forall ((~var_1_19~0 Int)) (or (< ~var_1_19~0 0) (< c_~last_1_var_1_20~0 ~var_1_19~0) (< (+ .cse0 (mod ~var_1_19~0 c_~var_1_27~0)) .cse2) (< 255 ~var_1_19~0))) .cse6) (or (< .cse0 .cse3) .cse7) (or .cse5 (forall ((~var_1_19~0 Int)) (let ((.cse8 (mod ~var_1_19~0 c_~var_1_27~0))) (or (< c_~last_1_var_1_20~0 ~var_1_19~0) (= .cse8 0) (< 0 (+ ~var_1_19~0 1)) (< (+ .cse0 c_~var_1_27~0 .cse8) .cse3))))) (or .cse6 (forall ((~var_1_19~0 Int)) (let ((.cse9 (mod ~var_1_19~0 c_~var_1_27~0))) (or (< c_~last_1_var_1_20~0 ~var_1_19~0) (< (+ .cse0 .cse9) .cse2) (= .cse9 0) (< 0 (+ ~var_1_19~0 1)))))) (or (forall ((~var_1_19~0 Int)) (or (< c_~last_1_var_1_20~0 ~var_1_19~0) (< (+ .cse0 (mod ~var_1_19~0 c_~var_1_27~0)) .cse2) (< 255 ~var_1_19~0))) .cse6) (or (forall ((~var_1_19~0 Int)) (or (< ~var_1_19~0 0) (< c_~last_1_var_1_20~0 ~var_1_19~0) (< 255 ~var_1_19~0) (< (+ .cse0 c_~var_1_27~0 (mod ~var_1_19~0 c_~var_1_27~0)) .cse3))) .cse5) (forall ((~var_1_19~0 Int)) (let ((.cse10 (mod ~var_1_19~0 c_~var_1_27~0))) (or (< c_~last_1_var_1_20~0 ~var_1_19~0) (< (+ .cse0 .cse10) .cse2) (< 255 ~var_1_19~0) (< (+ .cse0 c_~var_1_27~0 .cse10) .cse3)))) (or (< .cse0 .cse2) (< (+ .cse0 c_~var_1_27~0) .cse3) .cse7)))) is different from false [2023-12-19 11:36:07,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:36:07,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801480646] [2023-12-19 11:36:07,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:36:07,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209628659] [2023-12-19 11:36:07,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209628659] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 11:36:07,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 11:36:07,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-12-19 11:36:07,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466915798] [2023-12-19 11:36:07,380 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 11:36:07,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 11:36:07,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:36:07,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 11:36:07,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=198, Unknown=1, NotChecked=28, Total=272 [2023-12-19 11:36:07,384 INFO L87 Difference]: Start difference. First operand 420 states and 619 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 12 states have internal predecessors, (55), 3 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-19 11:36:09,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 11:36:13,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 11:36:15,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 11:36:22,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 11:36:22,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:36:22,346 INFO L93 Difference]: Finished difference Result 864 states and 1274 transitions. [2023-12-19 11:36:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 11:36:22,347 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 12 states have internal predecessors, (55), 3 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 175 [2023-12-19 11:36:22,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:36:22,349 INFO L225 Difference]: With dead ends: 864 [2023-12-19 11:36:22,350 INFO L226 Difference]: Without dead ends: 553 [2023-12-19 11:36:22,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=222, Invalid=773, Unknown=1, NotChecked=60, Total=1056 [2023-12-19 11:36:22,351 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 240 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-19 11:36:22,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 909 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-12-19 11:36:22,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2023-12-19 11:36:22,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 460. [2023-12-19 11:36:22,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 335 states have (on average 1.3850746268656717) internal successors, (464), 335 states have internal predecessors, (464), 108 states have call successors, (108), 16 states have call predecessors, (108), 16 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-19 11:36:22,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 680 transitions. [2023-12-19 11:36:22,422 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 680 transitions. Word has length 175 [2023-12-19 11:36:22,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:36:22,422 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 680 transitions. [2023-12-19 11:36:22,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 12 states have internal predecessors, (55), 3 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-19 11:36:22,423 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 680 transitions. [2023-12-19 11:36:22,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 11:36:22,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:36:22,425 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 11:36:22,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 11:36:22,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:36:22,633 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:36:22,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:36:22,633 INFO L85 PathProgramCache]: Analyzing trace with hash 375765867, now seen corresponding path program 1 times [2023-12-19 11:36:22,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:36:22,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508803622] [2023-12-19 11:36:22,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:36:22,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:36:22,685 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:36:22,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [871555104] [2023-12-19 11:36:22,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:36:22,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:36:22,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:36:22,709 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 11:36:22,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 11:36:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:36:22,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 11:36:22,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:36:24,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 776 proven. 48 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-12-19 11:36:24,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 11:36:26,163 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 139 [2023-12-19 11:36:26,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:36:26,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508803622] [2023-12-19 11:36:26,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:36:26,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871555104] [2023-12-19 11:36:26,164 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-12-19 11:36:26,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-19 11:36:26,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:36:26,366 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:845) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:579) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 45 more [2023-12-19 11:36:26,372 INFO L158 Benchmark]: Toolchain (without parser) took 40002.74ms. Allocated memory was 262.1MB in the beginning and 522.2MB in the end (delta: 260.0MB). Free memory was 209.9MB in the beginning and 460.4MB in the end (delta: -250.5MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. [2023-12-19 11:36:26,373 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 209.7MB. Free memory is still 160.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 11:36:26,373 INFO L158 Benchmark]: CACSL2BoogieTranslator took 419.37ms. Allocated memory is still 262.1MB. Free memory was 209.7MB in the beginning and 192.0MB in the end (delta: 17.6MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-19 11:36:26,374 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.54ms. Allocated memory is still 262.1MB. Free memory was 192.0MB in the beginning and 186.1MB in the end (delta: 5.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-19 11:36:26,374 INFO L158 Benchmark]: Boogie Preprocessor took 79.28ms. Allocated memory is still 262.1MB. Free memory was 186.1MB in the beginning and 175.3MB in the end (delta: 10.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-19 11:36:26,374 INFO L158 Benchmark]: RCFGBuilder took 587.44ms. Allocated memory is still 262.1MB. Free memory was 175.3MB in the beginning and 195.8MB in the end (delta: -20.4MB). Peak memory consumption was 6.6MB. Max. memory is 8.0GB. [2023-12-19 11:36:26,375 INFO L158 Benchmark]: TraceAbstraction took 38833.56ms. Allocated memory was 262.1MB in the beginning and 522.2MB in the end (delta: 260.0MB). Free memory was 195.3MB in the beginning and 460.4MB in the end (delta: -265.1MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 11:36:26,377 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 209.7MB. Free memory is still 160.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 419.37ms. Allocated memory is still 262.1MB. Free memory was 209.7MB in the beginning and 192.0MB in the end (delta: 17.6MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 78.54ms. Allocated memory is still 262.1MB. Free memory was 192.0MB in the beginning and 186.1MB in the end (delta: 5.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 79.28ms. Allocated memory is still 262.1MB. Free memory was 186.1MB in the beginning and 175.3MB in the end (delta: 10.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * RCFGBuilder took 587.44ms. Allocated memory is still 262.1MB. Free memory was 175.3MB in the beginning and 195.8MB in the end (delta: -20.4MB). Peak memory consumption was 6.6MB. Max. memory is 8.0GB. * TraceAbstraction took 38833.56ms. Allocated memory was 262.1MB in the beginning and 522.2MB in the end (delta: 260.0MB). Free memory was 195.3MB in the beginning and 460.4MB in the end (delta: -265.1MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...