/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-scaling/geo1-ll_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 20:12:13,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 20:12:13,859 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 20:12:13,862 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 20:12:13,863 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 20:12:13,882 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 20:12:13,883 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 20:12:13,883 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 20:12:13,884 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 20:12:13,886 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 20:12:13,887 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 20:12:13,887 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 20:12:13,887 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 20:12:13,888 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 20:12:13,889 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 20:12:13,889 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 20:12:13,889 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 20:12:13,889 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 20:12:13,889 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 20:12:13,889 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 20:12:13,890 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 20:12:13,890 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 20:12:13,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 20:12:13,890 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 20:12:13,890 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 20:12:13,890 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 20:12:13,891 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 20:12:13,891 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 20:12:13,891 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 20:12:13,891 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 20:12:13,892 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 20:12:13,892 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 20:12:13,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 20:12:13,892 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 20:12:13,892 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 20:12:13,893 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 20:12:13,893 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 20:12:13,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 20:12:13,893 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 20:12:13,893 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 20:12:13,893 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 20:12:13,893 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 20:12:13,893 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 20:12:13,894 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 20:12:14,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 20:12:14,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 20:12:14,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 20:12:14,116 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 20:12:14,116 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 20:12:14,117 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_unwindbound2.c [2023-12-19 20:12:15,059 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 20:12:15,237 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 20:12:15,238 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_unwindbound2.c [2023-12-19 20:12:15,243 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/761feb3b4/0d0dcbb18f8b4941b598bb1ea5198afc/FLAG1ca7ed05d [2023-12-19 20:12:15,256 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/761feb3b4/0d0dcbb18f8b4941b598bb1ea5198afc [2023-12-19 20:12:15,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 20:12:15,259 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 20:12:15,261 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 20:12:15,261 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 20:12:15,264 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 20:12:15,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:12:15" (1/1) ... [2023-12-19 20:12:15,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@496413c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:15, skipping insertion in model container [2023-12-19 20:12:15,266 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:12:15" (1/1) ... [2023-12-19 20:12:15,280 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 20:12:15,391 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-scaling/geo1-ll_unwindbound2.c[546,559] [2023-12-19 20:12:15,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 20:12:15,409 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 20:12:15,418 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-scaling/geo1-ll_unwindbound2.c[546,559] [2023-12-19 20:12:15,422 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 20:12:15,430 INFO L206 MainTranslator]: Completed translation [2023-12-19 20:12:15,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:15 WrapperNode [2023-12-19 20:12:15,431 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 20:12:15,432 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 20:12:15,432 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 20:12:15,432 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 20:12:15,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:15" (1/1) ... [2023-12-19 20:12:15,441 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:15" (1/1) ... [2023-12-19 20:12:15,451 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 46 [2023-12-19 20:12:15,451 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 20:12:15,452 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 20:12:15,452 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 20:12:15,452 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 20:12:15,458 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:15" (1/1) ... [2023-12-19 20:12:15,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:15" (1/1) ... [2023-12-19 20:12:15,466 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:15" (1/1) ... [2023-12-19 20:12:15,478 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 20:12:15,478 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:15" (1/1) ... [2023-12-19 20:12:15,479 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:15" (1/1) ... [2023-12-19 20:12:15,486 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:15" (1/1) ... [2023-12-19 20:12:15,488 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:15" (1/1) ... [2023-12-19 20:12:15,488 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:15" (1/1) ... [2023-12-19 20:12:15,489 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:15" (1/1) ... [2023-12-19 20:12:15,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 20:12:15,490 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 20:12:15,490 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 20:12:15,490 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 20:12:15,491 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:15" (1/1) ... [2023-12-19 20:12:15,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 20:12:15,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 20:12:15,513 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 20:12:15,519 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 20:12:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 20:12:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 20:12:15,532 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 20:12:15,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 20:12:15,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 20:12:15,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 20:12:15,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-19 20:12:15,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-19 20:12:15,571 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 20:12:15,572 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 20:12:15,679 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 20:12:15,693 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 20:12:15,693 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 20:12:15,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:12:15 BoogieIcfgContainer [2023-12-19 20:12:15,693 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 20:12:15,695 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 20:12:15,695 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 20:12:15,697 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 20:12:15,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 08:12:15" (1/3) ... [2023-12-19 20:12:15,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e920a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:12:15, skipping insertion in model container [2023-12-19 20:12:15,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:12:15" (2/3) ... [2023-12-19 20:12:15,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e920a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:12:15, skipping insertion in model container [2023-12-19 20:12:15,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:12:15" (3/3) ... [2023-12-19 20:12:15,699 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-ll_unwindbound2.c [2023-12-19 20:12:15,710 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 20:12:15,710 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 20:12:15,737 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 20:12:15,742 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;@49d1e207, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 20:12:15,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 20:12:15,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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) [2023-12-19 20:12:15,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-19 20:12:15,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 20:12:15,749 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 20:12:15,749 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 20:12:15,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 20:12:15,752 INFO L85 PathProgramCache]: Analyzing trace with hash -439153478, now seen corresponding path program 1 times [2023-12-19 20:12:15,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 20:12:15,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449654503] [2023-12-19 20:12:15,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:12:15,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 20:12:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 20:12:15,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 20:12:15,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449654503] [2023-12-19 20:12:15,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 20:12:15,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252787539] [2023-12-19 20:12:15,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:12:15,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 20:12:15,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 20:12:15,836 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 20:12:15,864 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 20:12:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 20:12:15,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 20:12:15,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 20:12:15,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 20:12:15,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 20:12:15,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252787539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 20:12:15,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 20:12:15,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 20:12:15,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954833655] [2023-12-19 20:12:15,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 20:12:15,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 20:12:15,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 20:12:15,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 20:12:15,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 20:12:15,938 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 20:12:15,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 20:12:15,953 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2023-12-19 20:12:15,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 20:12:15,955 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-12-19 20:12:15,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 20:12:15,959 INFO L225 Difference]: With dead ends: 42 [2023-12-19 20:12:15,959 INFO L226 Difference]: Without dead ends: 20 [2023-12-19 20:12:15,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 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 20:12:15,963 INFO L413 NwaCegarLoop]: 23 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, 23 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 20:12:15,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 20:12:15,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-19 20:12:15,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-12-19 20:12:15,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.2307692307692308) 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, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 20:12:15,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-12-19 20:12:15,984 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 18 [2023-12-19 20:12:15,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 20:12:15,985 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-12-19 20:12:15,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 20:12:15,985 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-12-19 20:12:15,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-19 20:12:15,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 20:12:15,986 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 20:12:15,993 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 20:12:16,193 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 20:12:16,196 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 20:12:16,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 20:12:16,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1801449375, now seen corresponding path program 1 times [2023-12-19 20:12:16,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 20:12:16,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951360984] [2023-12-19 20:12:16,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:12:16,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 20:12:16,222 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 20:12:16,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1130769847] [2023-12-19 20:12:16,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:12:16,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 20:12:16,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 20:12:16,223 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 20:12:16,225 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 20:12:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 20:12:16,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 20:12:16,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 20:12:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 20:12:16,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 20:12:16,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 20:12:16,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 20:12:16,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951360984] [2023-12-19 20:12:16,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 20:12:16,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130769847] [2023-12-19 20:12:16,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130769847] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 20:12:16,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 20:12:16,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-19 20:12:16,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315499260] [2023-12-19 20:12:16,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 20:12:16,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 20:12:16,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 20:12:16,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 20:12:16,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-19 20:12:16,535 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 20:12:20,579 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 20:12:20,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 20:12:20,652 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2023-12-19 20:12:20,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 20:12:20,653 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-12-19 20:12:20,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 20:12:20,653 INFO L225 Difference]: With dead ends: 31 [2023-12-19 20:12:20,654 INFO L226 Difference]: Without dead ends: 29 [2023-12-19 20:12:20,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-19 20:12:20,655 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-19 20:12:20,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 65 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2023-12-19 20:12:20,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-19 20:12:20,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2023-12-19 20:12:20,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 20 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-19 20:12:20,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2023-12-19 20:12:20,665 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 18 [2023-12-19 20:12:20,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 20:12:20,666 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2023-12-19 20:12:20,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 20:12:20,666 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2023-12-19 20:12:20,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-19 20:12:20,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 20:12:20,667 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 20:12:20,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 20:12:20,867 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 20:12:20,868 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 20:12:20,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 20:12:20,868 INFO L85 PathProgramCache]: Analyzing trace with hash -73181088, now seen corresponding path program 1 times [2023-12-19 20:12:20,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 20:12:20,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22082485] [2023-12-19 20:12:20,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:12:20,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 20:12:20,881 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 20:12:20,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [396456178] [2023-12-19 20:12:20,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:12:20,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 20:12:20,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 20:12:20,884 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 20:12:20,887 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 20:12:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 20:12:20,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 20:12:20,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 20:12:20,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 20:12:20,959 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 20:12:20,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 20:12:20,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22082485] [2023-12-19 20:12:20,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 20:12:20,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396456178] [2023-12-19 20:12:20,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396456178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 20:12:20,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 20:12:20,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 20:12:20,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436854601] [2023-12-19 20:12:20,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 20:12:20,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 20:12:20,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 20:12:20,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 20:12:20,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 20:12:20,965 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 20:12:20,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 20:12:20,989 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2023-12-19 20:12:20,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 20:12:20,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-12-19 20:12:20,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 20:12:20,993 INFO L225 Difference]: With dead ends: 35 [2023-12-19 20:12:20,993 INFO L226 Difference]: Without dead ends: 27 [2023-12-19 20:12:20,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 20:12:20,996 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 20:12:20,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 20:12:20,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-19 20:12:21,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-12-19 20:12:21,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-19 20:12:21,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2023-12-19 20:12:21,004 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 19 [2023-12-19 20:12:21,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 20:12:21,004 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2023-12-19 20:12:21,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 20:12:21,004 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2023-12-19 20:12:21,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-19 20:12:21,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 20:12:21,005 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 20:12:21,019 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 20:12:21,212 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 20:12:21,212 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 20:12:21,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 20:12:21,213 INFO L85 PathProgramCache]: Analyzing trace with hash 93929903, now seen corresponding path program 1 times [2023-12-19 20:12:21,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 20:12:21,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147208886] [2023-12-19 20:12:21,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:12:21,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 20:12:21,222 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 20:12:21,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1447655320] [2023-12-19 20:12:21,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:12:21,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 20:12:21,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 20:12:21,223 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 20:12:21,251 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 20:12:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 20:12:21,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 20:12:21,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 20:12:25,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 20:12:25,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 20:12:29,540 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 20:12:29,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 20:12:29,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147208886] [2023-12-19 20:12:29,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 20:12:29,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447655320] [2023-12-19 20:12:29,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447655320] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 20:12:29,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 20:12:29,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-12-19 20:12:29,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117775153] [2023-12-19 20:12:29,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 20:12:29,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 20:12:29,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 20:12:29,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 20:12:29,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=83, Unknown=2, NotChecked=0, Total=110 [2023-12-19 20:12:29,543 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-19 20:12:33,958 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 20:12:34,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 20:12:34,105 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2023-12-19 20:12:34,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 20:12:34,106 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-12-19 20:12:34,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 20:12:34,106 INFO L225 Difference]: With dead ends: 35 [2023-12-19 20:12:34,106 INFO L226 Difference]: Without dead ends: 27 [2023-12-19 20:12:34,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=40, Invalid=114, Unknown=2, NotChecked=0, Total=156 [2023-12-19 20:12:34,107 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-19 20:12:34,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 127 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2023-12-19 20:12:34,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-19 20:12:34,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-12-19 20:12:34,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 states have internal predecessors, (20), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-19 20:12:34,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2023-12-19 20:12:34,111 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 25 [2023-12-19 20:12:34,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 20:12:34,112 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2023-12-19 20:12:34,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-19 20:12:34,112 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2023-12-19 20:12:34,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-19 20:12:34,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 20:12:34,113 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 20:12:34,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 20:12:34,318 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 20:12:34,319 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 20:12:34,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 20:12:34,319 INFO L85 PathProgramCache]: Analyzing trace with hash -74990603, now seen corresponding path program 1 times [2023-12-19 20:12:34,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 20:12:34,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477311764] [2023-12-19 20:12:34,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:12:34,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 20:12:34,327 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 20:12:34,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2036925274] [2023-12-19 20:12:34,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:12:34,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 20:12:34,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 20:12:34,333 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 20:12:34,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 20:12:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 20:12:34,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 20:12:34,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 20:12:34,463 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 20:12:34,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 20:12:50,578 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_~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|)) 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) 1) 18446744073709551616) 0))) is different from true [2023-12-19 20:13:06,676 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 3 not checked. [2023-12-19 20:13:06,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 20:13:06,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477311764] [2023-12-19 20:13:06,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 20:13:06,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036925274] [2023-12-19 20:13:06,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036925274] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 20:13:06,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 20:13:06,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-19 20:13:06,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543281989] [2023-12-19 20:13:06,677 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 20:13:06,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 20:13:06,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 20:13:06,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 20:13:06,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=102, Unknown=2, NotChecked=20, Total=156 [2023-12-19 20:13:06,679 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-19 20:13:14,941 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 20:13:18,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 20:13:22,952 WARN L539 Checker$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 20:13:26,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 20:13:30,968 WARN L539 Checker$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 20:13:34,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 20:13:38,977 WARN L539 Checker$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 20:13:42,984 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 20:13:42,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 20:13:42,987 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2023-12-19 20:13:42,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 20:13:42,988 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 26 [2023-12-19 20:13:42,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 20:13:42,989 INFO L225 Difference]: With dead ends: 48 [2023-12-19 20:13:42,990 INFO L226 Difference]: Without dead ends: 46 [2023-12-19 20:13:42,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=53, Invalid=159, Unknown=2, NotChecked=26, Total=240 [2023-12-19 20:13:42,990 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 22 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 10 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 32.2s IncrementalHoareTripleChecker+Time [2023-12-19 20:13:42,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 139 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 77 Invalid, 8 Unknown, 47 Unchecked, 32.2s Time] [2023-12-19 20:13:42,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-19 20:13:42,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2023-12-19 20:13:42,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-19 20:13:42,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2023-12-19 20:13:42,998 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 26 [2023-12-19 20:13:42,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 20:13:42,998 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2023-12-19 20:13:42,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-19 20:13:42,998 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2023-12-19 20:13:42,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-19 20:13:42,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 20:13:42,999 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 20:13:43,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 20:13:43,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 20:13:43,204 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 20:13:43,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 20:13:43,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1886721738, now seen corresponding path program 1 times [2023-12-19 20:13:43,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 20:13:43,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290744464] [2023-12-19 20:13:43,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:13:43,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 20:13:43,216 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 20:13:43,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579225432] [2023-12-19 20:13:43,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:13:43,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 20:13:43,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 20:13:43,217 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 20:13:43,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 20:13:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 20:13:43,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 20:13:43,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 20:13:43,307 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 20:13:43,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 20:13:43,331 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 20:13:43,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 20:13:43,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290744464] [2023-12-19 20:13:43,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 20:13:43,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579225432] [2023-12-19 20:13:43,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579225432] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 20:13:43,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 20:13:43,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 5 [2023-12-19 20:13:43,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063687869] [2023-12-19 20:13:43,332 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 20:13:43,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 20:13:43,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 20:13:43,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 20:13:43,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 20:13:43,333 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-19 20:13:43,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 20:13:43,353 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2023-12-19 20:13:43,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 20:13:43,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 27 [2023-12-19 20:13:43,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 20:13:43,355 INFO L225 Difference]: With dead ends: 51 [2023-12-19 20:13:43,355 INFO L226 Difference]: Without dead ends: 43 [2023-12-19 20:13:43,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-19 20:13:43,356 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 20:13:43,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 20:13:43,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-19 20:13:43,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-12-19 20:13:43,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 32 states have internal predecessors, (34), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-19 20:13:43,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2023-12-19 20:13:43,362 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 27 [2023-12-19 20:13:43,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 20:13:43,362 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2023-12-19 20:13:43,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-19 20:13:43,363 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2023-12-19 20:13:43,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-19 20:13:43,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 20:13:43,363 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 20:13:43,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 20:13:43,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 20:13:43,568 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 20:13:43,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 20:13:43,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1291924684, now seen corresponding path program 2 times [2023-12-19 20:13:43,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 20:13:43,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188047765] [2023-12-19 20:13:43,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:13:43,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 20:13:43,577 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 20:13:43,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [604434928] [2023-12-19 20:13:43,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 20:13:43,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 20:13:43,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 20:13:43,578 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 20:13:43,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 20:13:43,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 20:13:43,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 20:13:43,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-19 20:13:43,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 20:13:43,958 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-19 20:13:43,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 20:14:06,506 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_~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|)) 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) 1) 18446744073709551616) 0))) is different from true [2023-12-19 20:14:34,976 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_~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| |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_~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|)) 18446744073709551616) 0))) is different from true [2023-12-19 20:14:43,005 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 20:14:51,012 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 20:14:59,022 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) 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_~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| |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_~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|)) 18446744073709551616) 0))) is different from true [2023-12-19 20:15:15,072 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 20:15:23,081 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 20:15:31,090 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 20:15:38,182 WARN L293 SmtUtils]: Spent 7.09s 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 20:15:50,197 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 20:15:54,203 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_11| Int) (v_z_1 Int)) (let ((.cse0 (+ v_z_1 (mod (+ (* 18446744073709551615 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_11|) (* |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_11|) 1) 18446744073709551616)))) (or (< v_z_1 0) (= .cse0 0) (< 18446744073709551615 v_z_1) (= (mod (+ (* |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13|) (* |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| v_z_1) (* |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_11|) (* |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| 18446744073709551615 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_11|)) 18446744073709551616) 0) (not (= (mod (+ |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| (* |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_11|) (* |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| 18446744073709551615 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_11|) (* |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| v_z_1)) 18446744073709551616) 0)) (= .cse0 18446744073709551616))))) is different from true [2023-12-19 20:16:06,251 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 20:16:14,265 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 20:16:22,958 WARN L293 SmtUtils]: Spent 8.69s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 20:16:28,952 WARN L293 SmtUtils]: Spent 5.99s 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 20:16:40,967 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 20:16:55,029 WARN L293 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 20:17:03,037 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 20:17:11,047 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 20:17:27,615 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 20:17:31,624 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_11| Int) (v_z_1 Int)) (let ((.cse0 (+ v_z_1 (mod (+ (* 18446744073709551615 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_11|) (* |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_11|) 1) 18446744073709551616)))) (or (< v_z_1 0) (= .cse0 0) (< 18446744073709551615 v_z_1) (= (mod (+ (* |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13|) (* |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| v_z_1) (* |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_11|) (* |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| 18446744073709551615 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_11|)) 18446744073709551616) 0) (not (= (mod (+ |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| (* |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_11|) (* |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| 18446744073709551615 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_11|) (* |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_13| v_z_1)) 18446744073709551616) 0)) (= .cse0 18446744073709551616)))) (= c___VERIFIER_assert_~cond 0)) is different from true [2023-12-19 20:17:39,636 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 20:17:47,645 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 20:17:59,660 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 20:18:07,669 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 20:18:11,803 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 12 not checked. [2023-12-19 20:18:11,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 20:18:11,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188047765] [2023-12-19 20:18:11,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 20:18:11,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604434928] [2023-12-19 20:18:11,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604434928] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 20:18:11,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 20:18:11,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2023-12-19 20:18:11,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95592683] [2023-12-19 20:18:11,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 20:18:11,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-19 20:18:11,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 20:18:11,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-19 20:18:11,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=291, Unknown=7, NotChecked=190, Total=552 [2023-12-19 20:18:11,805 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 9 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-19 20:18:24,710 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 20:18:36,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 20:18:40,884 WARN L539 Checker$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 20:18:44,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 20:18:48,907 WARN L539 Checker$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 20:18:52,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 20:18:56,918 WARN L539 Checker$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 20:19:00,952 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 20:19:00,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 20:19:00,953 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2023-12-19 20:19:00,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 20:19:00,979 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 9 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) Word has length 35 [2023-12-19 20:19:00,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 20:19:00,980 INFO L225 Difference]: With dead ends: 58 [2023-12-19 20:19:00,980 INFO L226 Difference]: Without dead ends: 51 [2023-12-19 20:19:00,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 46.7s TimeCoverageRelationStatistics Valid=113, Invalid=548, Unknown=9, NotChecked=260, Total=930 [2023-12-19 20:19:00,981 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 60 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 21 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 272 IncrementalHoareTripleChecker+Unchecked, 33.1s IncrementalHoareTripleChecker+Time [2023-12-19 20:19:00,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 153 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 152 Invalid, 8 Unknown, 272 Unchecked, 33.1s Time] [2023-12-19 20:19:00,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-19 20:19:00,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-19 20:19:00,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 38 states have internal predecessors, (38), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 20:19:00,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2023-12-19 20:19:00,987 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 35 [2023-12-19 20:19:00,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 20:19:00,987 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2023-12-19 20:19:00,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 9 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-19 20:19:00,987 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2023-12-19 20:19:00,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 20:19:00,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 20:19:00,990 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 20:19:00,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-19 20:19:01,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 20:19:01,191 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 20:19:01,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 20:19:01,191 INFO L85 PathProgramCache]: Analyzing trace with hash 963629389, now seen corresponding path program 2 times [2023-12-19 20:19:01,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 20:19:01,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304773393] [2023-12-19 20:19:01,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:19:01,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 20:19:01,199 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 20:19:01,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600616738] [2023-12-19 20:19:01,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 20:19:01,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 20:19:01,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 20:19:01,201 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 20:19:01,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 20:19:01,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 20:19:01,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 20:19:01,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 20:19:01,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 20:19:01,300 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-19 20:19:01,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 20:19:01,333 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-12-19 20:19:01,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 20:19:01,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304773393] [2023-12-19 20:19:01,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 20:19:01,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600616738] [2023-12-19 20:19:01,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600616738] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 20:19:01,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 20:19:01,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 6 [2023-12-19 20:19:01,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898074200] [2023-12-19 20:19:01,333 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 20:19:01,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 20:19:01,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 20:19:01,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 20:19:01,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-19 20:19:01,334 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-19 20:19:01,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 20:19:01,354 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2023-12-19 20:19:01,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 20:19:01,354 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 58 [2023-12-19 20:19:01,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 20:19:01,354 INFO L225 Difference]: With dead ends: 55 [2023-12-19 20:19:01,355 INFO L226 Difference]: Without dead ends: 0 [2023-12-19 20:19:01,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 20:19:01,355 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 20:19:01,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 20:19:01,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-19 20:19:01,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-19 20:19:01,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 20:19:01,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-19 20:19:01,356 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2023-12-19 20:19:01,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 20:19:01,356 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-19 20:19:01,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-19 20:19:01,356 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-19 20:19:01,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-19 20:19:01,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 20:19:01,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 20:19:01,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 20:19:01,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-19 20:20:44,681 WARN L293 SmtUtils]: Spent 1.72m on a formula simplification. DAG size of input: 36 DAG size of output: 26 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-12-19 20:20:46,606 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-19 20:20:46,606 INFO L895 garLoopResultBuilder]: At program point L35-3(lines 35 45) the Hoare annotation is: (let ((.cse1 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse0 (<= |ULTIMATE.start_main_~z~0#1| 2147483647)) (.cse2 (<= 1 |ULTIMATE.start_main_~z~0#1|))) (or (and (<= 2 ~counter~0) .cse0 (= |ULTIMATE.start_main_~y~0#1| (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~z~0#1| 1 .cse1)) .cse2) (and .cse0 (= |ULTIMATE.start_main_~y~0#1| .cse1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~z~0#1| 1)) (= ~counter~0 1) .cse2) (and (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) .cse0 (= |ULTIMATE.start_main_~x~0#1| 1) (= ~counter~0 0) .cse2))) [2023-12-19 20:20:46,607 INFO L899 garLoopResultBuilder]: For program point L35-4(lines 35 45) no Hoare annotation was computed. [2023-12-19 20:20:46,607 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-12-19 20:20:46,607 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-19 20:20:46,607 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~z~0#1| 2147483647)) (.cse1 (<= 1 |ULTIMATE.start_main_~z~0#1|))) (or (and (<= 2 ~counter~0) .cse0 (= |ULTIMATE.start_main_~y~0#1| (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~z~0#1| 1)) .cse1) (and (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) .cse0 (= |ULTIMATE.start_main_~x~0#1| 1) (= ~counter~0 1) .cse1))) [2023-12-19 20:20:46,607 INFO L899 garLoopResultBuilder]: For program point L36-1(lines 35 45) no Hoare annotation was computed. [2023-12-19 20:20:46,607 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (= ~counter~0 0)) [2023-12-19 20:20:46,607 INFO L895 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (= ~counter~0 0) (<= 1 |ULTIMATE.start_main_~z~0#1|)) [2023-12-19 20:20:46,607 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse0 (* 18446744073709551615 |ULTIMATE.start_main_~y~0#1|))) (or (and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (= (mod (+ |ULTIMATE.start_main_~x~0#1| .cse0 1) 18446744073709551616) 0) (<= 1 |ULTIMATE.start_main_~z~0#1|)) (exists ((|v_ULTIMATE.start_main_~x~0#1_20| Int) (|ULTIMATE.start_main_~z~0#1| Int)) (let ((.cse1 (* |v_ULTIMATE.start_main_~x~0#1_20| |ULTIMATE.start_main_~z~0#1|))) (and (= .cse1 (+ |v_ULTIMATE.start_main_~x~0#1_20| |ULTIMATE.start_main_~x~0#1|)) (= (mod (+ .cse1 (* |v_ULTIMATE.start_main_~x~0#1_20| 18446744073709551615) .cse0 1) 18446744073709551616) 0)))))) [2023-12-19 20:20:46,607 INFO L899 garLoopResultBuilder]: For program point L49-1(line 49) no Hoare annotation was computed. [2023-12-19 20:20:46,607 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 35 45) no Hoare annotation was computed. [2023-12-19 20:20:46,607 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2023-12-19 20:20:46,607 INFO L899 garLoopResultBuilder]: For program point L13-2(lines 12 14) no Hoare annotation was computed. [2023-12-19 20:20:46,607 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 12 14) the Hoare annotation is: true [2023-12-19 20:20:46,608 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 12 14) no Hoare annotation was computed. [2023-12-19 20:20:46,608 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2023-12-19 20:20:46,608 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 19) no Hoare annotation was computed. [2023-12-19 20:20:46,608 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 21) no Hoare annotation was computed. [2023-12-19 20:20:46,608 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 15 21) no Hoare annotation was computed. [2023-12-19 20:20:46,608 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 21) the Hoare annotation is: true [2023-12-19 20:20:46,608 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2023-12-19 20:20:46,610 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2023-12-19 20:20:46,611 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 20:20:46,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 08:20:46 BoogieIcfgContainer [2023-12-19 20:20:46,618 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 20:20:46,619 INFO L158 Benchmark]: Toolchain (without parser) took 511359.86ms. Allocated memory was 212.9MB in the beginning and 265.3MB in the end (delta: 52.4MB). Free memory was 149.2MB in the beginning and 188.1MB in the end (delta: -38.9MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-19 20:20:46,619 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 212.9MB. Free memory is still 162.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 20:20:46,619 INFO L158 Benchmark]: CACSL2BoogieTranslator took 170.35ms. Allocated memory is still 212.9MB. Free memory was 149.0MB in the beginning and 138.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 20:20:46,619 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.63ms. Allocated memory is still 212.9MB. Free memory was 138.1MB in the beginning and 136.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-19 20:20:46,619 INFO L158 Benchmark]: Boogie Preprocessor took 37.99ms. Allocated memory is still 212.9MB. Free memory was 136.6MB in the beginning and 134.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 20:20:46,620 INFO L158 Benchmark]: RCFGBuilder took 203.33ms. Allocated memory was 212.9MB in the beginning and 265.3MB in the end (delta: 52.4MB). Free memory was 134.8MB in the beginning and 228.6MB in the end (delta: -93.8MB). Peak memory consumption was 15.0MB. Max. memory is 8.0GB. [2023-12-19 20:20:46,620 INFO L158 Benchmark]: TraceAbstraction took 510923.40ms. Allocated memory is still 265.3MB. Free memory was 228.1MB in the beginning and 188.1MB in the end (delta: 40.0MB). Peak memory consumption was 39.5MB. Max. memory is 8.0GB. [2023-12-19 20:20:46,621 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 212.9MB. Free memory is still 162.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 170.35ms. Allocated memory is still 212.9MB. Free memory was 149.0MB in the beginning and 138.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.63ms. Allocated memory is still 212.9MB. Free memory was 138.1MB in the beginning and 136.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.99ms. Allocated memory is still 212.9MB. Free memory was 136.6MB in the beginning and 134.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 203.33ms. Allocated memory was 212.9MB in the beginning and 265.3MB in the end (delta: 52.4MB). Free memory was 134.8MB in the beginning and 228.6MB in the end (delta: -93.8MB). Peak memory consumption was 15.0MB. Max. memory is 8.0GB. * TraceAbstraction took 510923.40ms. Allocated memory is still 265.3MB. Free memory was 228.1MB in the beginning and 188.1MB in the end (delta: 40.0MB). Peak memory consumption was 39.5MB. 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 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 510.9s, OverallIterations: 8, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 94.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 105.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 mSolverCounterUnknown, 109 SdHoareTripleChecker+Valid, 74.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 104 mSDsluCounter, 661 SdHoareTripleChecker+Invalid, 74.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 319 IncrementalHoareTripleChecker+Unchecked, 509 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 356 IncrementalHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 152 mSDtfsCounter, 356 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 422 GetRequests, 335 SyntacticMatches, 12 SemanticMatches, 75 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 67.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=7, InterpolantAutomatonStates: 59, 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, 8 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 22 PreInvPairs, 31 NumberOfFragments, 159 HoareAnnotationTreeSize, 22 FormulaSimplifications, 42 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FormulaSimplificationsInter, 125 FormulaSimplificationTreeSizeReductionInter, 105.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 309.2s InterpolantComputationTime, 244 NumberOfCodeBlocks, 244 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 401 ConstructedInterpolants, 5 QuantifiedInterpolants, 1910 SizeOfPredicates, 15 NumberOfNonLiveVariables, 725 ConjunctsInSsa, 99 ConjunctsInUnsatCore, 14 InterpolantComputations, 3 PerfectInterpolantSequences, 273/320 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((2 <= counter) && (z <= 2147483647)) && (y == ((z * z) * z))) && (x == ((z + 1) + (z * z)))) && (1 <= z)) || (((((z <= 2147483647) && (y == (z * z))) && (x == (z + 1))) && (counter == 1)) && (1 <= z))) || (((((y == z) && (z <= 2147483647)) && (x == 1)) && (counter == 0)) && (1 <= z))) RESULT: Ultimate proved your program to be correct! [2023-12-19 20:20:46,852 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-19 20:20:46,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...