/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/recursified_nla-digbench/recursified_geo2-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 10:58:04,378 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 10:58:04,437 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 10:58:04,442 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 10:58:04,442 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 10:58:04,464 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 10:58:04,464 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 10:58:04,464 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 10:58:04,465 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 10:58:04,465 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 10:58:04,465 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 10:58:04,465 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 10:58:04,466 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 10:58:04,466 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 10:58:04,466 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 10:58:04,466 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 10:58:04,467 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 10:58:04,467 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 10:58:04,467 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 10:58:04,467 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 10:58:04,467 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 10:58:04,468 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 10:58:04,469 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 10:58:04,469 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 10:58:04,469 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 10:58:04,469 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 10:58:04,470 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 10:58:04,470 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 10:58:04,470 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 10:58:04,470 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 10:58:04,470 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 10:58:04,471 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 10:58:04,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 10:58:04,471 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 10:58:04,471 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 10:58:04,471 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 10:58:04,472 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 10:58:04,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 10:58:04,472 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 10:58:04,472 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 10:58:04,472 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 10:58:04,473 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 10:58:04,473 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 10:58:04,473 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 10:58:04,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 10:58:04,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 10:58:04,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 10:58:04,656 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 10:58:04,656 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 10:58:04,657 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursified_nla-digbench/recursified_geo2-ll.c [2023-12-21 10:58:05,555 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 10:58:05,715 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 10:58:05,716 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursified_nla-digbench/recursified_geo2-ll.c [2023-12-21 10:58:05,721 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90a10a243/7621d5f508ee421491efea9a7d3117a0/FLAGc60f2487e [2023-12-21 10:58:05,729 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90a10a243/7621d5f508ee421491efea9a7d3117a0 [2023-12-21 10:58:05,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 10:58:05,732 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 10:58:05,732 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 10:58:05,732 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 10:58:05,735 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 10:58:05,736 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:58:05" (1/1) ... [2023-12-21 10:58:05,736 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f92ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:58:05, skipping insertion in model container [2023-12-21 10:58:05,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:58:05" (1/1) ... [2023-12-21 10:58:05,751 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 10:58:05,865 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursified_nla-digbench/recursified_geo2-ll.c[1055,1068] [2023-12-21 10:58:05,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 10:58:05,909 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 10:58:05,919 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursified_nla-digbench/recursified_geo2-ll.c[1055,1068] [2023-12-21 10:58:05,928 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 10:58:05,937 INFO L206 MainTranslator]: Completed translation [2023-12-21 10:58:05,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:58:05 WrapperNode [2023-12-21 10:58:05,938 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 10:58:05,938 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 10:58:05,938 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 10:58:05,939 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 10:58:05,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:58:05" (1/1) ... [2023-12-21 10:58:05,948 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:58:05" (1/1) ... [2023-12-21 10:58:05,961 INFO L138 Inliner]: procedures = 16, calls = 51, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 59 [2023-12-21 10:58:05,962 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 10:58:05,962 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 10:58:05,962 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 10:58:05,962 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 10:58:05,969 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:58:05" (1/1) ... [2023-12-21 10:58:05,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:58:05" (1/1) ... [2023-12-21 10:58:05,971 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:58:05" (1/1) ... [2023-12-21 10:58:05,983 INFO L175 MemorySlicer]: Split 27 memory accesses to 6 slices as follows [2, 7, 5, 4, 7, 2]. 26 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 2, 2, 2, 1, 1]. [2023-12-21 10:58:05,984 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:58:05" (1/1) ... [2023-12-21 10:58:05,984 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:58:05" (1/1) ... [2023-12-21 10:58:05,988 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:58:05" (1/1) ... [2023-12-21 10:58:05,989 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:58:05" (1/1) ... [2023-12-21 10:58:05,990 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:58:05" (1/1) ... [2023-12-21 10:58:05,990 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:58:05" (1/1) ... [2023-12-21 10:58:05,992 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 10:58:05,993 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 10:58:05,993 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 10:58:05,993 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 10:58:05,993 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:58:05" (1/1) ... [2023-12-21 10:58:06,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 10:58:06,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:58:06,023 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) [2023-12-21 10:58:06,027 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 [2023-12-21 10:58:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 10:58:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 10:58:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 10:58:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 10:58:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 10:58:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-21 10:58:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-21 10:58:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 10:58:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-21 10:58:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-21 10:58:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-21 10:58:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-21 10:58:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-21 10:58:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-12-21 10:58:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_38_0 [2023-12-21 10:58:06,045 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_38_0 [2023-12-21 10:58:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 10:58:06,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 10:58:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-21 10:58:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-21 10:58:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-21 10:58:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-21 10:58:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-21 10:58:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-21 10:58:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-21 10:58:06,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-21 10:58:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 10:58:06,118 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 10:58:06,120 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 10:58:06,247 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 10:58:06,268 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 10:58:06,268 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 10:58:06,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:58:06 BoogieIcfgContainer [2023-12-21 10:58:06,268 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 10:58:06,270 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 10:58:06,270 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 10:58:06,272 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 10:58:06,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 10:58:05" (1/3) ... [2023-12-21 10:58:06,272 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682c622c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:58:06, skipping insertion in model container [2023-12-21 10:58:06,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:58:05" (2/3) ... [2023-12-21 10:58:06,272 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682c622c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:58:06, skipping insertion in model container [2023-12-21 10:58:06,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:58:06" (3/3) ... [2023-12-21 10:58:06,273 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_geo2-ll.c [2023-12-21 10:58:06,284 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 10:58:06,284 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 10:58:06,314 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 10:58:06,318 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;@258af500, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 10:58:06,318 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 10:58:06,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-21 10:58:06,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-21 10:58:06,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:58:06,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:58:06,326 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:58:06,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:58:06,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1288934217, now seen corresponding path program 1 times [2023-12-21 10:58:06,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:58:06,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805513754] [2023-12-21 10:58:06,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:58:06,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:58:06,413 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 10:58:06,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2101108619] [2023-12-21 10:58:06,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:58:06,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:58:06,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:58:06,416 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) [2023-12-21 10:58:06,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 10:58:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:58:06,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-21 10:58:06,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:58:06,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 10:58:06,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 10:58:06,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 10:58:06,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 10:58:06,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 10:58:06,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:58:06,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805513754] [2023-12-21 10:58:06,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 10:58:06,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101108619] [2023-12-21 10:58:06,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101108619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:58:06,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:58:06,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 10:58:06,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620028978] [2023-12-21 10:58:06,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:58:06,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 10:58:06,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:58:06,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 10:58:06,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 10:58:06,818 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 10:58:06,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:58:06,985 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2023-12-21 10:58:06,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 10:58:06,987 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-21 10:58:06,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:58:06,992 INFO L225 Difference]: With dead ends: 52 [2023-12-21 10:58:06,992 INFO L226 Difference]: Without dead ends: 31 [2023-12-21 10:58:06,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-21 10:58:06,999 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 15 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:58:07,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 72 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:58:07,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-21 10:58:07,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2023-12-21 10:58:07,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-21 10:58:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-12-21 10:58:07,027 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 8 [2023-12-21 10:58:07,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:58:07,028 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-12-21 10:58:07,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 10:58:07,028 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-12-21 10:58:07,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-21 10:58:07,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:58:07,029 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:58:07,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 10:58:07,234 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 [2023-12-21 10:58:07,234 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:58:07,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:58:07,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1531368910, now seen corresponding path program 1 times [2023-12-21 10:58:07,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:58:07,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136837269] [2023-12-21 10:58:07,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:58:07,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:58:07,268 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 10:58:07,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339500597] [2023-12-21 10:58:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:58:07,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:58:07,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:58:07,270 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) [2023-12-21 10:58:07,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 10:58:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:58:08,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 121 conjunts are in the unsatisfiable core [2023-12-21 10:58:08,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:58:08,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 10:58:08,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 10:58:08,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 10:58:09,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-21 10:58:09,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-12-21 10:58:09,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-12-21 10:58:09,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-21 10:58:09,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-21 10:58:09,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 10:58:09,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:58:31,899 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int#2| c_func_to_recursive_line_30_to_38_0_~y.base) c_func_to_recursive_line_30_to_38_0_~y.offset)) (.cse2 (select (select |c_#memory_int#1| c_func_to_recursive_line_30_to_38_0_~x.base) c_func_to_recursive_line_30_to_38_0_~x.offset)) (.cse0 (select (select |c_#memory_int#4| c_func_to_recursive_line_30_to_38_0_~z.base) c_func_to_recursive_line_30_to_38_0_~z.offset))) (or (not (= (mod (+ (* 18446744073709551615 .cse0 .cse1) (* .cse2 .cse0) (* 18446744073709551615 .cse2) 1) 18446744073709551616) 0)) (= (mod (+ .cse0 (* .cse2 .cse0 .cse0) (* 18446744073709551615 .cse0 .cse0 .cse1) (* 18446744073709551615 .cse2 .cse0)) 18446744073709551616) 0))) is different from true [2023-12-21 10:58:43,940 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int#1| |c_func_to_recursive_line_30_to_38_0_#in~x.base|) |c_func_to_recursive_line_30_to_38_0_#in~x.offset|)) (.cse0 (select (select |c_#memory_int#4| |c_func_to_recursive_line_30_to_38_0_#in~z.base|) |c_func_to_recursive_line_30_to_38_0_#in~z.offset|)) (.cse2 (select (select |c_#memory_int#2| |c_func_to_recursive_line_30_to_38_0_#in~y.base|) |c_func_to_recursive_line_30_to_38_0_#in~y.offset|))) (or (= (mod (+ .cse0 (* 18446744073709551615 .cse0 .cse1) (* 18446744073709551615 .cse0 .cse0 .cse2) (* .cse0 .cse0 .cse1)) 18446744073709551616) 0) (not (= (mod (+ (* 18446744073709551615 .cse1) (* .cse0 .cse1) (* 18446744073709551615 .cse0 .cse2) 1) 18446744073709551616) 0)))) is different from true [2023-12-21 10:58:55,971 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#x~0#1.base|) |c_ULTIMATE.start_main_~#x~0#1.offset|)) (.cse0 (select (select |c_#memory_int#2| |c_ULTIMATE.start_main_~#y~0#1.base|) |c_ULTIMATE.start_main_~#y~0#1.offset|)) (.cse1 (select (select |c_#memory_int#4| |c_ULTIMATE.start_main_~#z~0#1.base|) |c_ULTIMATE.start_main_~#z~0#1.offset|))) (or (= (mod (+ (* 18446744073709551615 .cse0 .cse1 .cse1) .cse1 (* .cse2 .cse1 .cse1) (* 18446744073709551615 .cse2 .cse1)) 18446744073709551616) 0) (not (= 0 (mod (+ (* .cse2 .cse1) (* 18446744073709551615 .cse2) (* 18446744073709551615 .cse0 .cse1) 1) 18446744073709551616))))) is different from true [2023-12-21 10:58:55,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-12-21 10:58:55,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:58:55,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136837269] [2023-12-21 10:58:55,973 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 10:58:55,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339500597] [2023-12-21 10:58:55,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339500597] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:58:55,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 10:58:55,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2023-12-21 10:58:55,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223013115] [2023-12-21 10:58:55,974 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 10:58:55,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 10:58:55,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:58:55,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 10:58:55,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=432, Unknown=5, NotChecked=132, Total=650 [2023-12-21 10:58:55,976 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 26 states, 20 states have (on average 1.25) internal successors, (25), 18 states have internal predecessors, (25), 8 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 10:58:58,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 10:59:07,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 10:59:11,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 10:59:35,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 10:59:39,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 11:00:04,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 11:00:08,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 11:00:12,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 11:00:16,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 11:00:20,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 11:00:24,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 11:00:31,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 7.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 11:00:35,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 11:00:39,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 11:00:43,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 11:00:47,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 11:00:51,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 11:00:55,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 11:00:59,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 11:01:03,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 11:01:07,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 11:01:10,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-12-21 11:01:14,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-12-21 11:01:14,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:01:14,892 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2023-12-21 11:01:14,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 11:01:14,893 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 1.25) internal successors, (25), 18 states have internal predecessors, (25), 8 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-12-21 11:01:14,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:01:14,895 INFO L225 Difference]: With dead ends: 63 [2023-12-21 11:01:14,895 INFO L226 Difference]: Without dead ends: 59 [2023-12-21 11:01:14,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 67.5s TimeCoverageRelationStatistics Valid=196, Invalid=994, Unknown=12, NotChecked=204, Total=1406 [2023-12-21 11:01:14,896 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 57 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 19 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 201 IncrementalHoareTripleChecker+Unchecked, 93.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:01:14,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 136 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 287 Invalid, 21 Unknown, 201 Unchecked, 93.5s Time] [2023-12-21 11:01:14,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-21 11:01:14,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2023-12-21 11:01:14,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 37 states have (on average 1.135135135135135) internal successors, (42), 40 states have internal predecessors, (42), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2023-12-21 11:01:14,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2023-12-21 11:01:14,907 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 18 [2023-12-21 11:01:14,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:01:14,907 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2023-12-21 11:01:14,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 1.25) internal successors, (25), 18 states have internal predecessors, (25), 8 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 11:01:14,907 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2023-12-21 11:01:14,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-21 11:01:14,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:01:14,908 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:01:14,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 11:01:15,108 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 [2023-12-21 11:01:15,109 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:01:15,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:01:15,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1152056984, now seen corresponding path program 1 times [2023-12-21 11:01:15,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:01:15,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813927083] [2023-12-21 11:01:15,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:01:15,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:01:15,134 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 11:01:15,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [865136973] [2023-12-21 11:01:15,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:01:15,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:01:15,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:01:15,138 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) [2023-12-21 11:01:15,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 11:01:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:01:15,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-21 11:01:15,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:01:15,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 11:01:15,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 11:01:15,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 11:01:15,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 11:01:15,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:01:15,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:01:15,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:01:15,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813927083] [2023-12-21 11:01:15,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 11:01:15,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865136973] [2023-12-21 11:01:15,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865136973] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:01:15,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:01:15,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 11:01:15,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588580975] [2023-12-21 11:01:15,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:01:15,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 11:01:15,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:01:15,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 11:01:15,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:01:15,417 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 11:01:15,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:01:15,549 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2023-12-21 11:01:15,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 11:01:15,549 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-12-21 11:01:15,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:01:15,550 INFO L225 Difference]: With dead ends: 61 [2023-12-21 11:01:15,550 INFO L226 Difference]: Without dead ends: 53 [2023-12-21 11:01:15,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:01:15,551 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 11 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:01:15,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 37 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:01:15,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-12-21 11:01:15,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-12-21 11:01:15,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 37 states have internal predecessors, (38), 9 states have call successors, (9), 7 states have call predecessors, (9), 9 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-12-21 11:01:15,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2023-12-21 11:01:15,560 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 18 [2023-12-21 11:01:15,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:01:15,560 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2023-12-21 11:01:15,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 11:01:15,560 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2023-12-21 11:01:15,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-21 11:01:15,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:01:15,561 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:01:15,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 11:01:15,765 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 [2023-12-21 11:01:15,766 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:01:15,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:01:15,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1747688822, now seen corresponding path program 1 times [2023-12-21 11:01:15,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:01:15,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220448717] [2023-12-21 11:01:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:01:15,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:01:15,789 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 11:01:15,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1559920718] [2023-12-21 11:01:15,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:01:15,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:01:15,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:01:15,802 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) [2023-12-21 11:01:15,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 11:01:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:01:15,982 WARN L260 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 138 conjunts are in the unsatisfiable core [2023-12-21 11:01:15,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:01:15,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 11:01:16,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 11:01:16,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 11:01:16,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 11:01:16,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2023-12-21 11:01:16,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-12-21 11:01:39,609 WARN L293 SmtUtils]: Spent 9.90s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 11:01:51,634 WARN L293 SmtUtils]: Spent 7.77s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 11:01:51,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-12-21 11:01:51,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-21 11:01:51,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2023-12-21 11:01:51,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 11:01:51,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-21 11:01:51,932 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 11:01:51,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:02:05,127 WARN L293 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 123 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-12-21 11:02:10,364 WARN L293 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-12-21 11:02:21,518 WARN L293 SmtUtils]: Spent 11.15s on a formula simplification that was a NOOP. DAG size: 99 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-12-21 11:02:35,222 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((|v_func_to_recursive_line_30_to_38_0_#in~z.offset_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_30_to_38_0_#in~y.base_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_30_to_38_0_#in~x.offset_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_30_to_38_0_#in~x.base_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_30_to_38_0_#in~z.base_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_30_to_38_0_#in~y.offset_BEFORE_CALL_4| Int)) (let ((.cse0 (select (select |c_#memory_int#4| |v_func_to_recursive_line_30_to_38_0_#in~z.base_BEFORE_CALL_4|) |v_func_to_recursive_line_30_to_38_0_#in~z.offset_BEFORE_CALL_4|))) (or (= (mod (let ((.cse1 (select (select |c_#memory_int#1| |v_func_to_recursive_line_30_to_38_0_#in~x.base_BEFORE_CALL_4|) |v_func_to_recursive_line_30_to_38_0_#in~x.offset_BEFORE_CALL_4|))) (+ (* .cse0 .cse1) (* 18446744073709551615 (select (select |c_#memory_int#2| |v_func_to_recursive_line_30_to_38_0_#in~y.base_BEFORE_CALL_4|) |v_func_to_recursive_line_30_to_38_0_#in~y.offset_BEFORE_CALL_4|) .cse0) (* 18446744073709551615 .cse1) 1)) 18446744073709551616) 0) (not (= (mod (let ((.cse2 (select (select |c_old(#memory_int#1)| |v_func_to_recursive_line_30_to_38_0_#in~x.base_BEFORE_CALL_4|) |v_func_to_recursive_line_30_to_38_0_#in~x.offset_BEFORE_CALL_4|))) (+ (* 18446744073709551615 .cse2) (* .cse0 .cse2) 1 (* 18446744073709551615 .cse0 (select (select |c_old(#memory_int#2)| |v_func_to_recursive_line_30_to_38_0_#in~y.base_BEFORE_CALL_4|) |v_func_to_recursive_line_30_to_38_0_#in~y.offset_BEFORE_CALL_4|)))) 18446744073709551616) 0))))) (or (forall ((|v_func_to_recursive_line_30_to_38_0_#in~z.offset_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_30_to_38_0_#in~x.offset_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_30_to_38_0_#in~y.base_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_30_to_38_0_#in~x.base_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_30_to_38_0_#in~z.base_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_30_to_38_0_#in~y.offset_BEFORE_CALL_4| Int)) (= (mod (let ((.cse3 (select (select |c_#memory_int#4| |v_func_to_recursive_line_30_to_38_0_#in~z.base_BEFORE_CALL_4|) |v_func_to_recursive_line_30_to_38_0_#in~z.offset_BEFORE_CALL_4|)) (.cse4 (select (select |c_#memory_int#1| |v_func_to_recursive_line_30_to_38_0_#in~x.base_BEFORE_CALL_4|) |v_func_to_recursive_line_30_to_38_0_#in~x.offset_BEFORE_CALL_4|))) (+ (* .cse3 .cse4) (* 18446744073709551615 (select (select |c_#memory_int#2| |v_func_to_recursive_line_30_to_38_0_#in~y.base_BEFORE_CALL_4|) |v_func_to_recursive_line_30_to_38_0_#in~y.offset_BEFORE_CALL_4|) .cse3) (* 18446744073709551615 .cse4) 1)) 18446744073709551616) 0)) (= (mod (let ((.cse5 (select (select |c_#memory_int#4| |c_func_to_recursive_line_30_to_38_0_#in~z.base|) |c_func_to_recursive_line_30_to_38_0_#in~z.offset|)) (.cse6 (select (select |c_old(#memory_int#1)| |c_func_to_recursive_line_30_to_38_0_#in~x.base|) |c_func_to_recursive_line_30_to_38_0_#in~x.offset|))) (+ (* .cse5 .cse6) (* 18446744073709551615 .cse5 (select (select |c_old(#memory_int#2)| |c_func_to_recursive_line_30_to_38_0_#in~y.base|) |c_func_to_recursive_line_30_to_38_0_#in~y.offset|)) (* 18446744073709551615 .cse6) 1)) 18446744073709551616) 0))) is different from false [2023-12-21 11:02:41,826 WARN L293 SmtUtils]: Spent 6.58s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 11:02:44,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:02:44,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220448717] [2023-12-21 11:02:44,368 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 11:02:44,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559920718] [2023-12-21 11:02:44,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559920718] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:02:44,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:02:44,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-12-21 11:02:44,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789803726] [2023-12-21 11:02:44,368 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 11:02:44,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 11:02:44,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:02:44,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 11:02:44,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=434, Unknown=3, NotChecked=42, Total=552 [2023-12-21 11:02:44,369 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-21 11:02:48,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 11:02:52,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 11:02:56,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 11:03:01,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 11:03:14,364 WARN L293 SmtUtils]: Spent 8.73s on a formula simplification. DAG size of input: 78 DAG size of output: 62 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 11:03:16,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 11:03:19,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-21 11:03:20,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:03:20,203 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2023-12-21 11:03:20,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 11:03:20,204 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 30 [2023-12-21 11:03:20,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:03:20,204 INFO L225 Difference]: With dead ends: 63 [2023-12-21 11:03:20,204 INFO L226 Difference]: Without dead ends: 51 [2023-12-21 11:03:20,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 40.3s TimeCoverageRelationStatistics Valid=123, Invalid=747, Unknown=4, NotChecked=56, Total=930 [2023-12-21 11:03:20,205 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 25 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 12 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:03:20,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 52 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 210 Invalid, 3 Unknown, 0 Unchecked, 22.0s Time] [2023-12-21 11:03:20,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-21 11:03:20,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-21 11:03:20,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 35 states have internal predecessors, (36), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-12-21 11:03:20,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2023-12-21 11:03:20,213 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 30 [2023-12-21 11:03:20,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:03:20,213 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2023-12-21 11:03:20,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-21 11:03:20,213 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2023-12-21 11:03:20,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 11:03:20,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:03:20,214 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2023-12-21 11:03:20,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-21 11:03:20,419 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 [2023-12-21 11:03:20,420 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:03:20,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:03:20,420 INFO L85 PathProgramCache]: Analyzing trace with hash -834140740, now seen corresponding path program 2 times [2023-12-21 11:03:20,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:03:20,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817099952] [2023-12-21 11:03:20,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:03:20,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:03:20,437 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 11:03:20,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2098379092] [2023-12-21 11:03:20,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 11:03:20,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:03:20,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:03:20,438 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) [2023-12-21 11:03:20,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 11:03:20,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 11:03:20,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unknown [2023-12-21 11:03:20,989 WARN L124 FreeRefinementEngine]: Strategy CAMEL was unsuccessful and could not determine trace feasibility [2023-12-21 11:03:20,989 INFO L360 BasicCegarLoop]: Counterexample might be feasible [2023-12-21 11:03:20,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 11:03:21,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 11:03:21,195 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 [2023-12-21 11:03:21,198 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-12-21 11:03:21,199 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 11:03:21,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:03:21 BoogieIcfgContainer [2023-12-21 11:03:21,211 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 11:03:21,212 INFO L158 Benchmark]: Toolchain (without parser) took 315480.08ms. Allocated memory is still 274.7MB. Free memory was 231.1MB in the beginning and 199.0MB in the end (delta: 32.1MB). Peak memory consumption was 33.0MB. Max. memory is 8.0GB. [2023-12-21 11:03:21,212 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 224.4MB. Free memory is still 172.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 11:03:21,213 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.57ms. Allocated memory is still 274.7MB. Free memory was 230.8MB in the beginning and 219.6MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 11:03:21,213 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.32ms. Allocated memory is still 274.7MB. Free memory was 219.6MB in the beginning and 218.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 11:03:21,214 INFO L158 Benchmark]: Boogie Preprocessor took 30.05ms. Allocated memory is still 274.7MB. Free memory was 217.9MB in the beginning and 215.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 11:03:21,214 INFO L158 Benchmark]: RCFGBuilder took 275.59ms. Allocated memory is still 274.7MB. Free memory was 215.8MB in the beginning and 200.4MB in the end (delta: 15.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-21 11:03:21,214 INFO L158 Benchmark]: TraceAbstraction took 314941.78ms. Allocated memory is still 274.7MB. Free memory was 199.7MB in the beginning and 199.0MB in the end (delta: 655.6kB). Peak memory consumption was 1.5MB. Max. memory is 8.0GB. [2023-12-21 11:03:21,215 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 224.4MB. Free memory is still 172.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 205.57ms. Allocated memory is still 274.7MB. Free memory was 230.8MB in the beginning and 219.6MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.32ms. Allocated memory is still 274.7MB. Free memory was 219.6MB in the beginning and 218.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.05ms. Allocated memory is still 274.7MB. Free memory was 217.9MB in the beginning and 215.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 275.59ms. Allocated memory is still 274.7MB. Free memory was 215.8MB in the beginning and 200.4MB in the end (delta: 15.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 314941.78ms. Allocated memory is still 274.7MB. Free memory was 199.7MB in the beginning and 199.0MB in the end (delta: 655.6kB). Peak memory consumption was 1.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 41]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L77] int z; [L78] int k; [L79] unsigned long long x; [L80] unsigned long long y; [L81] unsigned long long c; [L82] z = __VERIFIER_nondet_int() [L83] k = __VERIFIER_nondet_int() [L84] x = 1 [L85] y = 1 [L86] c = 1 [L87] CALL func_to_recursive_line_30_to_38_0(&k, &c, &x, &y, &z) [L56] EXPR \read(*x) [L56] EXPR \read(*z) [L56] EXPR \read(*x) [L56] EXPR \read(*z) [L56] EXPR \read(*y) [L56] CALL __VERIFIER_assert((((1 + ((*x) * (*z))) - (*x)) - ((*z) * (*y))) == 0) [L37] COND FALSE !(!cond) [L56] RET __VERIFIER_assert((((1 + ((*x) * (*z))) - (*x)) - ((*z) * (*y))) == 0) [L57] EXPR \read(*c) [L57] EXPR \read(*k) [L57] COND FALSE !(!((*c) < (*k))) [L64] EXPR \read(*c) [L64] *c = (*c) + 1 [L65] EXPR \read(*x) [L65] EXPR \read(*z) [L65] *x = ((*x) * (*z)) + 1 [L66] EXPR \read(*y) [L66] EXPR \read(*z) [L66] *y = (*y) * (*z) [L68] CALL func_to_recursive_line_30_to_38_0(k, c, x, y, z) [L56] EXPR \read(*x) [L56] EXPR \read(*z) [L56] EXPR \read(*x) [L56] EXPR \read(*z) [L56] EXPR \read(*y) [L56] CALL __VERIFIER_assert((((1 + ((*x) * (*z))) - (*x)) - ((*z) * (*y))) == 0) [L37] COND FALSE !(!cond) [L56] RET __VERIFIER_assert((((1 + ((*x) * (*z))) - (*x)) - ((*z) * (*y))) == 0) [L57] EXPR \read(*c) [L57] EXPR \read(*k) [L57] COND FALSE !(!((*c) < (*k))) [L64] EXPR \read(*c) [L64] *c = (*c) + 1 [L65] EXPR \read(*x) [L65] EXPR \read(*z) [L65] *x = ((*x) * (*z)) + 1 [L66] EXPR \read(*y) [L66] EXPR \read(*z) [L66] *y = (*y) * (*z) [L68] CALL func_to_recursive_line_30_to_38_0(k, c, x, y, z) [L56] EXPR \read(*x) [L56] EXPR \read(*z) [L56] EXPR \read(*x) [L56] EXPR \read(*z) [L56] EXPR \read(*y) [L56] CALL __VERIFIER_assert((((1 + ((*x) * (*z))) - (*x)) - ((*z) * (*y))) == 0) [L37] COND FALSE !(!cond) [L56] RET __VERIFIER_assert((((1 + ((*x) * (*z))) - (*x)) - ((*z) * (*y))) == 0) [L57] EXPR \read(*c) [L57] EXPR \read(*k) [L57] COND FALSE !(!((*c) < (*k))) [L64] EXPR \read(*c) [L64] *c = (*c) + 1 [L65] EXPR \read(*x) [L65] EXPR \read(*z) [L65] *x = ((*x) * (*z)) + 1 [L66] EXPR \read(*y) [L66] EXPR \read(*z) [L66] *y = (*y) * (*z) [L68] CALL func_to_recursive_line_30_to_38_0(k, c, x, y, z) [L56] EXPR \read(*x) [L56] EXPR \read(*z) [L56] EXPR \read(*x) [L56] EXPR \read(*z) [L56] EXPR \read(*y) [L56] CALL __VERIFIER_assert((((1 + ((*x) * (*z))) - (*x)) - ((*z) * (*y))) == 0) [L37] COND TRUE !cond [L41] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 314.9s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 175.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 mSolverCounterUnknown, 111 SdHoareTripleChecker+Valid, 115.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 108 mSDsluCounter, 297 SdHoareTripleChecker+Invalid, 115.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 201 IncrementalHoareTripleChecker+Unchecked, 255 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 664 IncrementalHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 42 mSDtfsCounter, 664 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 107.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=2, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 136.0s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 87 ConstructedInterpolants, 7 QuantifiedInterpolants, 2265 SizeOfPredicates, 107 NumberOfNonLiveVariables, 866 ConjunctsInSsa, 347 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 11/27 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-21 11:03:21,287 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 0 Received shutdown request...