/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/nla-digbench/geo2-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 18:55:22,525 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 18:55:22,592 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 18:55:22,597 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 18:55:22,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 18:55:22,618 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 18:55:22,618 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 18:55:22,619 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 18:55:22,619 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 18:55:22,622 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 18:55:22,622 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 18:55:22,623 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 18:55:22,623 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 18:55:22,624 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 18:55:22,624 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 18:55:22,624 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 18:55:22,624 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 18:55:22,624 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 18:55:22,624 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 18:55:22,625 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 18:55:22,625 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 18:55:22,625 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 18:55:22,625 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 18:55:22,625 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 18:55:22,625 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 18:55:22,626 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 18:55:22,626 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 18:55:22,626 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 18:55:22,626 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 18:55:22,626 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 18:55:22,627 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 18:55:22,627 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 18:55:22,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 18:55:22,628 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 18:55:22,628 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 18:55:22,628 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 18:55:22,628 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 18:55:22,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 18:55:22,628 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 18:55:22,628 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 18:55:22,628 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 18:55:22,629 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 18:55:22,629 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 18:55:22,629 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 18:55:22,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 18:55:22,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 18:55:22,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 18:55:22,818 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 18:55:22,819 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 18:55:22,819 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo2-ll.c [2023-12-19 18:55:23,901 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 18:55:24,057 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 18:55:24,058 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo2-ll.c [2023-12-19 18:55:24,063 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0de9db80/77c410b0ead64c968930fbec66a281b2/FLAG59caaa49b [2023-12-19 18:55:24,076 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0de9db80/77c410b0ead64c968930fbec66a281b2 [2023-12-19 18:55:24,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 18:55:24,079 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 18:55:24,081 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 18:55:24,081 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 18:55:24,085 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 18:55:24,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:55:24" (1/1) ... [2023-12-19 18:55:24,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@104ed646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:55:24, skipping insertion in model container [2023-12-19 18:55:24,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:55:24" (1/1) ... [2023-12-19 18:55:24,104 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 18:55:24,198 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo2-ll.c[525,538] [2023-12-19 18:55:24,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 18:55:24,213 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 18:55:24,221 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo2-ll.c[525,538] [2023-12-19 18:55:24,225 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 18:55:24,240 INFO L206 MainTranslator]: Completed translation [2023-12-19 18:55:24,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:55:24 WrapperNode [2023-12-19 18:55:24,241 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 18:55:24,242 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 18:55:24,242 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 18:55:24,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 18:55:24,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:55:24" (1/1) ... [2023-12-19 18:55:24,251 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:55:24" (1/1) ... [2023-12-19 18:55:24,261 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2023-12-19 18:55:24,262 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 18:55:24,262 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 18:55:24,262 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 18:55:24,262 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 18:55:24,269 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:55:24" (1/1) ... [2023-12-19 18:55:24,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:55:24" (1/1) ... [2023-12-19 18:55:24,270 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:55:24" (1/1) ... [2023-12-19 18:55:24,280 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 18:55:24,280 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:55:24" (1/1) ... [2023-12-19 18:55:24,280 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:55:24" (1/1) ... [2023-12-19 18:55:24,284 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:55:24" (1/1) ... [2023-12-19 18:55:24,286 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:55:24" (1/1) ... [2023-12-19 18:55:24,287 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:55:24" (1/1) ... [2023-12-19 18:55:24,288 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:55:24" (1/1) ... [2023-12-19 18:55:24,289 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 18:55:24,290 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 18:55:24,290 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 18:55:24,290 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 18:55:24,291 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:55:24" (1/1) ... [2023-12-19 18:55:24,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 18:55:24,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:55:24,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 18:55:24,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 18:55:24,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 18:55:24,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 18:55:24,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 18:55:24,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 18:55:24,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-19 18:55:24,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-19 18:55:24,399 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 18:55:24,400 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 18:55:24,501 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 18:55:24,516 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 18:55:24,516 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 18:55:24,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:55:24 BoogieIcfgContainer [2023-12-19 18:55:24,517 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 18:55:24,518 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 18:55:24,518 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 18:55:24,520 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 18:55:24,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 06:55:24" (1/3) ... [2023-12-19 18:55:24,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb543ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:55:24, skipping insertion in model container [2023-12-19 18:55:24,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:55:24" (2/3) ... [2023-12-19 18:55:24,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb543ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:55:24, skipping insertion in model container [2023-12-19 18:55:24,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:55:24" (3/3) ... [2023-12-19 18:55:24,522 INFO L112 eAbstractionObserver]: Analyzing ICFG geo2-ll.c [2023-12-19 18:55:24,534 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 18:55:24,534 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 18:55:24,568 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 18:55:24,572 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;@6e348a82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 18:55:24,572 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 18:55:24,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 18:55:24,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-19 18:55:24,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:55:24,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-19 18:55:24,580 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:55:24,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:55:24,583 INFO L85 PathProgramCache]: Analyzing trace with hash 2080033536, now seen corresponding path program 1 times [2023-12-19 18:55:24,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:55:24,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155328063] [2023-12-19 18:55:24,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:55:24,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:55:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:55:24,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:55:24,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155328063] [2023-12-19 18:55:24,712 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 18:55:24,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89911853] [2023-12-19 18:55:24,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:55:24,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:55:24,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:55:24,715 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:55:24,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 18:55:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:55:24,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 18:55:24,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:55:24,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:55:24,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 18:55:24,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89911853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:55:24,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:55:24,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 18:55:24,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473833041] [2023-12-19 18:55:24,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:55:24,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 18:55:24,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:55:24,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 18:55:24,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 18:55:24,801 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:55:24,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:55:24,826 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2023-12-19 18:55:24,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 18:55:24,827 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-19 18:55:24,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:55:24,832 INFO L225 Difference]: With dead ends: 25 [2023-12-19 18:55:24,832 INFO L226 Difference]: Without dead ends: 11 [2023-12-19 18:55:24,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 18:55:24,838 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:55:24,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:55:24,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-19 18:55:24,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-12-19 18:55:24,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-19 18:55:24,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2023-12-19 18:55:24,860 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2023-12-19 18:55:24,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:55:24,860 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2023-12-19 18:55:24,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:55:24,860 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2023-12-19 18:55:24,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-19 18:55:24,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:55:24,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-19 18:55:24,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 18:55:25,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 18:55:25,066 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:55:25,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:55:25,066 INFO L85 PathProgramCache]: Analyzing trace with hash 2072585786, now seen corresponding path program 1 times [2023-12-19 18:55:25,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:55:25,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890916717] [2023-12-19 18:55:25,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:55:25,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:55:25,075 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 18:55:25,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [728382422] [2023-12-19 18:55:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:55:25,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:55:25,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:55:25,079 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:55:25,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 18:55:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:55:25,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 18:55:25,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:55:25,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:55:25,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 18:55:25,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:55:25,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890916717] [2023-12-19 18:55:25,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 18:55:25,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728382422] [2023-12-19 18:55:25,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728382422] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:55:25,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:55:25,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 18:55:25,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291265278] [2023-12-19 18:55:25,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:55:25,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 18:55:25,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:55:25,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 18:55:25,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 18:55:25,180 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:55:25,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:55:25,215 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2023-12-19 18:55:25,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 18:55:25,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-19 18:55:25,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:55:25,216 INFO L225 Difference]: With dead ends: 21 [2023-12-19 18:55:25,216 INFO L226 Difference]: Without dead ends: 18 [2023-12-19 18:55:25,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 18:55:25,217 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:55:25,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 27 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:55:25,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-19 18:55:25,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-19 18:55:25,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 18:55:25,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2023-12-19 18:55:25,221 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 6 [2023-12-19 18:55:25,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:55:25,221 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2023-12-19 18:55:25,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:55:25,222 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2023-12-19 18:55:25,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-19 18:55:25,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:55:25,222 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:55:25,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 18:55:25,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 18:55:25,428 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:55:25,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:55:25,430 INFO L85 PathProgramCache]: Analyzing trace with hash 43759517, now seen corresponding path program 1 times [2023-12-19 18:55:25,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:55:25,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378560651] [2023-12-19 18:55:25,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:55:25,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:55:25,437 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 18:55:25,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482401570] [2023-12-19 18:55:25,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:55:25,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:55:25,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:55:25,439 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:55:25,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 18:55:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:55:25,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 18:55:25,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:55:25,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:55:25,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:55:37,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:55:37,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378560651] [2023-12-19 18:55:37,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 18:55:37,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482401570] [2023-12-19 18:55:37,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482401570] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:55:37,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 18:55:37,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-12-19 18:55:37,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984695934] [2023-12-19 18:55:37,726 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 18:55:37,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 18:55:37,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:55:37,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 18:55:37,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=65, Unknown=3, NotChecked=0, Total=90 [2023-12-19 18:55:37,728 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-19 18:55:37,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:55:37,945 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2023-12-19 18:55:37,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 18:55:37,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-12-19 18:55:37,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:55:37,946 INFO L225 Difference]: With dead ends: 28 [2023-12-19 18:55:37,946 INFO L226 Difference]: Without dead ends: 25 [2023-12-19 18:55:37,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=28, Invalid=79, Unknown=3, NotChecked=0, Total=110 [2023-12-19 18:55:37,947 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 18:55:37,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 40 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 18:55:37,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-19 18:55:37,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-12-19 18:55:37,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 18:55:37,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2023-12-19 18:55:37,951 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 13 [2023-12-19 18:55:37,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:55:37,952 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2023-12-19 18:55:37,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-19 18:55:37,952 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2023-12-19 18:55:37,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-19 18:55:37,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:55:37,952 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1] [2023-12-19 18:55:37,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 18:55:38,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:55:38,157 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:55:38,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:55:38,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2043175130, now seen corresponding path program 2 times [2023-12-19 18:55:38,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:55:38,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024700751] [2023-12-19 18:55:38,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:55:38,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:55:38,166 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 18:55:38,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2111846925] [2023-12-19 18:55:38,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 18:55:38,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:55:38,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:55:38,167 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:55:38,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 18:55:38,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 18:55:38,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:55:38,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-19 18:55:38,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:55:38,882 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 18:55:38,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:55:59,053 WARN L876 $PredicateComparison]: unable to prove that (or (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) |c_ULTIMATE.start_main_~z~0#1|) 18446744073709551616) 0) (not (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1|) 1) 18446744073709551616) 0))) is different from true [2023-12-19 18:56:19,432 WARN L876 $PredicateComparison]: unable to prove that (or (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) |c_ULTIMATE.start_main_~z~0#1|) 18446744073709551616) 0))) is different from true [2023-12-19 18:56:27,474 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 18:56:35,485 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 18:56:43,500 WARN L876 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1|) 1) 18446744073709551616) 0)) (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) |c_ULTIMATE.start_main_~z~0#1|) 18446744073709551616) 0))) is different from true [2023-12-19 18:56:57,084 WARN L293 SmtUtils]: Spent 9.55s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 18:57:11,291 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| Int) (|v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| Int)) (or (= (mod (+ (* 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| 18446744073709551615) 1) 18446744073709551616) 0) (not (= (mod (+ (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|) |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| (* 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)) 18446744073709551616) 0)) (= (mod (+ (* 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|)) 18446744073709551616) 0)))) is different from true [2023-12-19 18:57:23,332 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 18:57:35,366 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 18:57:47,400 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 18:57:59,870 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| Int) (|v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| Int)) (or (= (mod (+ (* 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| 18446744073709551615) 1) 18446744073709551616) 0) (not (= (mod (+ (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|) |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| (* 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)) 18446744073709551616) 0)) (= (mod (+ (* 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_7|)) 18446744073709551616) 0))) (= c___VERIFIER_assert_~cond 0)) is different from true [2023-12-19 18:58:07,885 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 18:58:15,892 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 18:58:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 11 not checked. [2023-12-19 18:58:19,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:58:19,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024700751] [2023-12-19 18:58:19,899 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 18:58:19,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111846925] [2023-12-19 18:58:19,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111846925] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:58:19,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 18:58:19,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 18 [2023-12-19 18:58:19,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583651301] [2023-12-19 18:58:19,900 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 18:58:19,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 18:58:19,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:58:19,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 18:58:19,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=125, Unknown=7, NotChecked=130, Total=306 [2023-12-19 18:58:19,901 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-19 18:58:37,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:58:41,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:58:45,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:58:49,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:58:53,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:58:57,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:59:01,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:59:01,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:59:01,937 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2023-12-19 18:59:01,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 18:59:01,937 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 20 [2023-12-19 18:59:01,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:59:01,939 INFO L225 Difference]: With dead ends: 41 [2023-12-19 18:59:01,939 INFO L226 Difference]: Without dead ends: 36 [2023-12-19 18:59:01,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 43.0s TimeCoverageRelationStatistics Valid=66, Invalid=185, Unknown=9, NotChecked=160, Total=420 [2023-12-19 18:59:01,940 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 21 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 16 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 179 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time [2023-12-19 18:59:01,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 61 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 74 Invalid, 7 Unknown, 179 Unchecked, 28.5s Time] [2023-12-19 18:59:01,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-19 18:59:01,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-19 18:59:01,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.04) internal successors, (26), 26 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-19 18:59:01,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2023-12-19 18:59:01,947 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 20 [2023-12-19 18:59:01,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:59:01,947 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2023-12-19 18:59:01,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-19 18:59:01,947 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2023-12-19 18:59:01,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-19 18:59:01,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:59:01,949 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 1, 1, 1] [2023-12-19 18:59:01,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 18:59:02,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:59:02,150 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:59:02,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:59:02,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1331753565, now seen corresponding path program 3 times [2023-12-19 18:59:02,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:59:02,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768004690] [2023-12-19 18:59:02,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:59:02,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:59:02,157 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 18:59:02,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1599844429] [2023-12-19 18:59:02,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 18:59:02,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:59:02,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:59:02,161 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:59:02,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Received shutdown request... [2023-12-19 19:10:14,009 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 19:10:14,009 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 19:10:15,058 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 [2023-12-19 19:10:15,210 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-12-19 19:10:15,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-12-19 19:10:15,218 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-19 19:10:15,220 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 19:10:15,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 19:10:15,220 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 42 with TraceHistMax 6,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-19 19:10:15,223 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-12-19 19:10:15,226 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 19:10:15,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 07:10:15 BoogieIcfgContainer [2023-12-19 19:10:15,229 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 19:10:15,230 INFO L158 Benchmark]: Toolchain (without parser) took 891150.75ms. Allocated memory is still 368.1MB. Free memory was 308.2MB in the beginning and 238.3MB in the end (delta: 69.9MB). Peak memory consumption was 70.7MB. Max. memory is 8.0GB. [2023-12-19 19:10:15,230 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 215.0MB. Free memory is still 164.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 19:10:15,230 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.82ms. Allocated memory is still 368.1MB. Free memory was 307.9MB in the beginning and 297.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 19:10:15,230 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.07ms. Allocated memory is still 368.1MB. Free memory was 297.1MB in the beginning and 295.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 19:10:15,230 INFO L158 Benchmark]: Boogie Preprocessor took 26.78ms. Allocated memory is still 368.1MB. Free memory was 295.6MB in the beginning and 293.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-19 19:10:15,231 INFO L158 Benchmark]: RCFGBuilder took 227.23ms. Allocated memory is still 368.1MB. Free memory was 293.9MB in the beginning and 283.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 19:10:15,237 INFO L158 Benchmark]: TraceAbstraction took 890711.38ms. Allocated memory is still 368.1MB. Free memory was 282.7MB in the beginning and 238.3MB in the end (delta: 44.4MB). Peak memory consumption was 45.6MB. Max. memory is 8.0GB. [2023-12-19 19:10:15,240 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 215.0MB. Free memory is still 164.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 159.82ms. Allocated memory is still 368.1MB. Free memory was 307.9MB in the beginning and 297.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.07ms. Allocated memory is still 368.1MB. Free memory was 297.1MB in the beginning and 295.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.78ms. Allocated memory is still 368.1MB. Free memory was 295.6MB in the beginning and 293.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 227.23ms. Allocated memory is still 368.1MB. Free memory was 293.9MB in the beginning and 283.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 890711.38ms. Allocated memory is still 368.1MB. Free memory was 282.7MB in the beginning and 238.3MB in the end (delta: 44.4MB). Peak memory consumption was 45.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 17]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 17). Cancelled while NwaCegarLoop was analyzing trace of length 42 with TraceHistMax 6,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 890.7s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 42.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 28.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 140 SdHoareTripleChecker+Invalid, 28.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 179 IncrementalHoareTripleChecker+Unchecked, 102 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 129 IncrementalHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 38 mSDtfsCounter, 129 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 55.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, InterpolantAutomatonStates: 24, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 173.6s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 3 QuantifiedInterpolants, 772 SizeOfPredicates, 5 NumberOfNonLiveVariables, 215 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 11/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown