/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 06:34:18,883 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 06:34:18,918 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 06:34:18,920 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 06:34:18,921 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 06:34:18,934 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 06:34:18,934 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 06:34:18,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 06:34:18,935 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 06:34:18,935 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 06:34:18,935 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 06:34:18,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 06:34:18,936 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 06:34:18,936 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 06:34:18,936 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 06:34:18,937 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 06:34:18,937 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 06:34:18,937 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 06:34:18,937 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 06:34:18,938 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 06:34:18,938 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 06:34:18,951 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 06:34:18,952 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 06:34:18,952 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 06:34:18,952 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 06:34:18,952 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 06:34:18,952 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 06:34:18,952 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 06:34:18,953 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 06:34:18,953 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 06:34:18,953 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 06:34:18,953 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 06:34:18,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 06:34:18,954 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 06:34:18,954 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 06:34:18,954 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 06:34:18,954 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 06:34:18,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 06:34:18,954 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 06:34:18,954 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 06:34:18,954 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 06:34:18,955 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 06:34:18,955 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 06:34:18,955 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 06:34:19,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 06:34:19,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 06:34:19,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 06:34:19,154 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 06:34:19,154 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 06:34:19,155 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound2.c [2023-12-21 06:34:20,190 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 06:34:20,335 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 06:34:20,335 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound2.c [2023-12-21 06:34:20,348 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/114beaea0/125778c2660d430cb35211baaa50823a/FLAGa36b1a6d4 [2023-12-21 06:34:20,357 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/114beaea0/125778c2660d430cb35211baaa50823a [2023-12-21 06:34:20,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 06:34:20,361 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 06:34:20,361 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 06:34:20,362 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 06:34:20,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 06:34:20,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:34:20" (1/1) ... [2023-12-21 06:34:20,366 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38f839cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:34:20, skipping insertion in model container [2023-12-21 06:34:20,366 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:34:20" (1/1) ... [2023-12-21 06:34:20,388 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 06:34:20,494 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/egcd3-ll_valuebound2.c[490,503] [2023-12-21 06:34:20,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 06:34:20,513 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 06:34:20,520 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/egcd3-ll_valuebound2.c[490,503] [2023-12-21 06:34:20,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 06:34:20,534 INFO L206 MainTranslator]: Completed translation [2023-12-21 06:34:20,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:34:20 WrapperNode [2023-12-21 06:34:20,534 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 06:34:20,535 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 06:34:20,535 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 06:34:20,535 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 06:34:20,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:34:20" (1/1) ... [2023-12-21 06:34:20,544 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:34:20" (1/1) ... [2023-12-21 06:34:20,561 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 83 [2023-12-21 06:34:20,561 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 06:34:20,561 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 06:34:20,562 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 06:34:20,562 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 06:34:20,568 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:34:20" (1/1) ... [2023-12-21 06:34:20,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:34:20" (1/1) ... [2023-12-21 06:34:20,569 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:34:20" (1/1) ... [2023-12-21 06:34:20,575 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]. [2023-12-21 06:34:20,576 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:34:20" (1/1) ... [2023-12-21 06:34:20,576 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:34:20" (1/1) ... [2023-12-21 06:34:20,578 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:34:20" (1/1) ... [2023-12-21 06:34:20,580 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:34:20" (1/1) ... [2023-12-21 06:34:20,580 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:34:20" (1/1) ... [2023-12-21 06:34:20,581 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:34:20" (1/1) ... [2023-12-21 06:34:20,582 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 06:34:20,582 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 06:34:20,583 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 06:34:20,583 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 06:34:20,583 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:34:20" (1/1) ... [2023-12-21 06:34:20,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 06:34:20,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:34:20,606 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 06:34:20,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 06:34:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 06:34:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 06:34:20,628 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 06:34:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 06:34:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 06:34:20,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 06:34:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-21 06:34:20,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-21 06:34:20,672 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 06:34:20,674 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 06:34:20,794 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 06:34:20,817 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 06:34:20,817 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-21 06:34:20,817 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:34:20 BoogieIcfgContainer [2023-12-21 06:34:20,817 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 06:34:20,819 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 06:34:20,819 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 06:34:20,821 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 06:34:20,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 06:34:20" (1/3) ... [2023-12-21 06:34:20,821 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eba679a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:34:20, skipping insertion in model container [2023-12-21 06:34:20,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:34:20" (2/3) ... [2023-12-21 06:34:20,821 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eba679a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:34:20, skipping insertion in model container [2023-12-21 06:34:20,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:34:20" (3/3) ... [2023-12-21 06:34:20,822 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.c [2023-12-21 06:34:20,837 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 06:34:20,837 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 06:34:20,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 06:34:20,873 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;@27999ca1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 06:34:20,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 06:34:20,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-21 06:34:20,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-21 06:34:20,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:34:20,886 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:34:20,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:34:20,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:34:20,891 INFO L85 PathProgramCache]: Analyzing trace with hash 67099435, now seen corresponding path program 1 times [2023-12-21 06:34:20,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:34:20,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397864723] [2023-12-21 06:34:20,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:20,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:34:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:34:21,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:34:21,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397864723] [2023-12-21 06:34:21,013 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-21 06:34:21,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59767368] [2023-12-21 06:34:21,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:21,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:34:21,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:34:21,016 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:34:21,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 06:34:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:34:21,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 06:34:21,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:34:21,082 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 06:34:21,083 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 06:34:21,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59767368] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 06:34:21,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 06:34:21,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 06:34:21,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944364047] [2023-12-21 06:34:21,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 06:34:21,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 06:34:21,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:34:21,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 06:34:21,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 06:34:21,117 INFO L87 Difference]: Start difference. First operand has 32 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 06:34:21,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:34:21,183 INFO L93 Difference]: Finished difference Result 62 states and 104 transitions. [2023-12-21 06:34:21,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 06:34:21,186 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2023-12-21 06:34:21,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:34:21,190 INFO L225 Difference]: With dead ends: 62 [2023-12-21 06:34:21,190 INFO L226 Difference]: Without dead ends: 30 [2023-12-21 06:34:21,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 06:34:21,197 INFO L413 NwaCegarLoop]: 39 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, 39 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 [2023-12-21 06:34:21,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 06:34:21,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-21 06:34:21,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-12-21 06:34:21,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-21 06:34:21,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2023-12-21 06:34:21,224 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 28 [2023-12-21 06:34:21,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:34:21,225 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2023-12-21 06:34:21,225 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 06:34:21,225 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2023-12-21 06:34:21,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-21 06:34:21,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:34:21,226 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:34:21,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 06:34:21,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-21 06:34:21,432 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:34:21,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:34:21,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1772608446, now seen corresponding path program 1 times [2023-12-21 06:34:21,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:34:21,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890114868] [2023-12-21 06:34:21,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:21,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:34:21,458 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:34:21,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076941844] [2023-12-21 06:34:21,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:21,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:34:21,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:34:21,462 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:34:21,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 06:34:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:34:21,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 06:34:21,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:34:21,568 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 06:34:21,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 06:34:21,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:34:21,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890114868] [2023-12-21 06:34:21,569 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:34:21,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076941844] [2023-12-21 06:34:21,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076941844] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 06:34:21,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 06:34:21,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 06:34:21,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241241824] [2023-12-21 06:34:21,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 06:34:21,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 06:34:21,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:34:21,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 06:34:21,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 06:34:21,571 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 06:34:21,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:34:21,654 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2023-12-21 06:34:21,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 06:34:21,655 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2023-12-21 06:34:21,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:34:21,656 INFO L225 Difference]: With dead ends: 49 [2023-12-21 06:34:21,656 INFO L226 Difference]: Without dead ends: 42 [2023-12-21 06:34:21,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 06:34:21,657 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 06:34:21,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 115 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 06:34:21,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-21 06:34:21,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2023-12-21 06:34:21,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-21 06:34:21,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2023-12-21 06:34:21,664 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 29 [2023-12-21 06:34:21,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:34:21,664 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2023-12-21 06:34:21,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 06:34:21,665 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2023-12-21 06:34:21,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 06:34:21,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:34:21,665 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:34:21,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 06:34:21,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-21 06:34:21,872 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:34:21,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:34:21,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1072684582, now seen corresponding path program 1 times [2023-12-21 06:34:21,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:34:21,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896659014] [2023-12-21 06:34:21,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:21,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:34:21,894 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:34:21,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [957413505] [2023-12-21 06:34:21,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:21,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:34:21,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:34:21,900 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:34:21,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 06:34:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:34:21,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 06:34:21,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:34:22,228 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 06:34:22,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:34:22,372 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 06:34:22,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:34:22,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896659014] [2023-12-21 06:34:22,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:34:22,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957413505] [2023-12-21 06:34:22,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957413505] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 06:34:22,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 06:34:22,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-12-21 06:34:22,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724315797] [2023-12-21 06:34:22,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 06:34:22,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 06:34:22,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:34:22,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 06:34:22,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-12-21 06:34:22,378 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 06:34:22,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:34:22,442 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2023-12-21 06:34:22,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 06:34:22,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2023-12-21 06:34:22,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:34:22,446 INFO L225 Difference]: With dead ends: 48 [2023-12-21 06:34:22,446 INFO L226 Difference]: Without dead ends: 46 [2023-12-21 06:34:22,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-12-21 06:34:22,449 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 13 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 06:34:22,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 180 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 06:34:22,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-21 06:34:22,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2023-12-21 06:34:22,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 29 states have internal predecessors, (34), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-21 06:34:22,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2023-12-21 06:34:22,471 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 32 [2023-12-21 06:34:22,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:34:22,472 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2023-12-21 06:34:22,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 06:34:22,472 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2023-12-21 06:34:22,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 06:34:22,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:34:22,473 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:34:22,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 06:34:22,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:34:22,681 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:34:22,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:34:22,682 INFO L85 PathProgramCache]: Analyzing trace with hash 581538888, now seen corresponding path program 1 times [2023-12-21 06:34:22,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:34:22,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085871005] [2023-12-21 06:34:22,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:22,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:34:22,712 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:34:22,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [458617833] [2023-12-21 06:34:22,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:22,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:34:22,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:34:22,713 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:34:22,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 06:34:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:34:22,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 06:34:22,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:34:22,790 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 06:34:22,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:34:22,849 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 06:34:22,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:34:22,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085871005] [2023-12-21 06:34:22,849 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:34:22,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458617833] [2023-12-21 06:34:22,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458617833] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:34:22,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:34:22,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2023-12-21 06:34:22,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921899850] [2023-12-21 06:34:22,850 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:34:22,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 06:34:22,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:34:22,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 06:34:22,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-21 06:34:22,852 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 06:34:22,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:34:22,971 INFO L93 Difference]: Finished difference Result 98 states and 138 transitions. [2023-12-21 06:34:22,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 06:34:22,971 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2023-12-21 06:34:22,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:34:22,972 INFO L225 Difference]: With dead ends: 98 [2023-12-21 06:34:22,988 INFO L226 Difference]: Without dead ends: 91 [2023-12-21 06:34:22,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 55 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-21 06:34:22,989 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 62 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 06:34:22,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 191 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 06:34:22,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-21 06:34:22,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 66. [2023-12-21 06:34:22,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 46 states have internal predecessors, (57), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 06:34:22,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 90 transitions. [2023-12-21 06:34:22,999 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 90 transitions. Word has length 34 [2023-12-21 06:34:22,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:34:22,999 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 90 transitions. [2023-12-21 06:34:23,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 06:34:23,000 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 90 transitions. [2023-12-21 06:34:23,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-21 06:34:23,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:34:23,000 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:34:23,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-21 06:34:23,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:34:23,201 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:34:23,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:34:23,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1534715754, now seen corresponding path program 1 times [2023-12-21 06:34:23,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:34:23,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474708038] [2023-12-21 06:34:23,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:23,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:34:23,211 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:34:23,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082662088] [2023-12-21 06:34:23,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:23,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:34:23,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:34:23,217 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:34:23,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 06:34:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:34:23,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-21 06:34:23,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:34:23,592 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 06:34:23,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:34:24,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:34:24,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474708038] [2023-12-21 06:34:24,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:34:24,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082662088] [2023-12-21 06:34:24,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082662088] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 06:34:24,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 06:34:24,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-12-21 06:34:24,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144203993] [2023-12-21 06:34:24,136 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 06:34:24,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 06:34:24,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:34:24,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 06:34:24,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-12-21 06:34:24,137 INFO L87 Difference]: Start difference. First operand 66 states and 90 transitions. Second operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 11 states have internal predecessors, (20), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-21 06:34:24,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:34:24,368 INFO L93 Difference]: Finished difference Result 81 states and 109 transitions. [2023-12-21 06:34:24,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 06:34:24,368 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 11 states have internal predecessors, (20), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 37 [2023-12-21 06:34:24,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:34:24,369 INFO L225 Difference]: With dead ends: 81 [2023-12-21 06:34:24,369 INFO L226 Difference]: Without dead ends: 79 [2023-12-21 06:34:24,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2023-12-21 06:34:24,370 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 51 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 06:34:24,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 164 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 06:34:24,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-21 06:34:24,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2023-12-21 06:34:24,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 48 states have (on average 1.25) internal successors, (60), 49 states have internal predecessors, (60), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 06:34:24,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 93 transitions. [2023-12-21 06:34:24,386 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 93 transitions. Word has length 37 [2023-12-21 06:34:24,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:34:24,387 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 93 transitions. [2023-12-21 06:34:24,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 11 states have internal predecessors, (20), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-21 06:34:24,388 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 93 transitions. [2023-12-21 06:34:24,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-21 06:34:24,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:34:24,391 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:34:24,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 06:34:24,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:34:24,596 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:34:24,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:34:24,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1190433772, now seen corresponding path program 1 times [2023-12-21 06:34:24,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:34:24,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565727231] [2023-12-21 06:34:24,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:24,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:34:24,618 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:34:24,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340686693] [2023-12-21 06:34:24,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:24,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:34:24,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:34:24,638 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) [2023-12-21 06:34:24,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 06:34:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:34:24,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-21 06:34:24,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:34:24,824 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 06:34:24,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:34:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 06:34:24,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:34:24,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565727231] [2023-12-21 06:34:24,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:34:24,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340686693] [2023-12-21 06:34:24,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340686693] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:34:24,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:34:24,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2023-12-21 06:34:24,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055800084] [2023-12-21 06:34:24,919 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:34:24,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 06:34:24,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:34:24,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 06:34:24,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-21 06:34:24,922 INFO L87 Difference]: Start difference. First operand 70 states and 93 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 11 states have internal predecessors, (35), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-21 06:34:26,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:34:26,171 INFO L93 Difference]: Finished difference Result 113 states and 154 transitions. [2023-12-21 06:34:26,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 06:34:26,171 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 11 states have internal predecessors, (35), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 37 [2023-12-21 06:34:26,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:34:26,172 INFO L225 Difference]: With dead ends: 113 [2023-12-21 06:34:26,172 INFO L226 Difference]: Without dead ends: 111 [2023-12-21 06:34:26,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-12-21 06:34:26,173 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 65 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 06:34:26,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 284 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 06:34:26,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-12-21 06:34:26,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 100. [2023-12-21 06:34:26,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 69 states have (on average 1.2608695652173914) internal successors, (87), 70 states have internal predecessors, (87), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 06:34:26,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 136 transitions. [2023-12-21 06:34:26,186 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 136 transitions. Word has length 37 [2023-12-21 06:34:26,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:34:26,186 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 136 transitions. [2023-12-21 06:34:26,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 11 states have internal predecessors, (35), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-21 06:34:26,187 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 136 transitions. [2023-12-21 06:34:26,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-21 06:34:26,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:34:26,187 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:34:26,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 06:34:26,392 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 [2023-12-21 06:34:26,392 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:34:26,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:34:26,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1246105370, now seen corresponding path program 1 times [2023-12-21 06:34:26,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:34:26,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742467679] [2023-12-21 06:34:26,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:26,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:34:26,414 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:34:26,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [511421453] [2023-12-21 06:34:26,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:26,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:34:26,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:34:26,420 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) [2023-12-21 06:34:26,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 06:34:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:34:26,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 06:34:26,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:34:26,634 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 06:34:26,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:34:27,858 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 06:34:27,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:34:27,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742467679] [2023-12-21 06:34:27,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:34:27,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511421453] [2023-12-21 06:34:27,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511421453] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 06:34:27,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 06:34:27,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 14 [2023-12-21 06:34:27,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403626367] [2023-12-21 06:34:27,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 06:34:27,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 06:34:27,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:34:27,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 06:34:27,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-21 06:34:27,859 INFO L87 Difference]: Start difference. First operand 100 states and 136 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-21 06:34:27,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:34:27,926 INFO L93 Difference]: Finished difference Result 146 states and 208 transitions. [2023-12-21 06:34:27,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 06:34:27,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42 [2023-12-21 06:34:27,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:34:27,927 INFO L225 Difference]: With dead ends: 146 [2023-12-21 06:34:27,927 INFO L226 Difference]: Without dead ends: 144 [2023-12-21 06:34:27,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-21 06:34:27,928 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 06:34:27,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 114 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 06:34:27,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-12-21 06:34:27,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 138. [2023-12-21 06:34:27,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 86 states have (on average 1.2906976744186047) internal successors, (111), 87 states have internal predecessors, (111), 45 states have call successors, (45), 6 states have call predecessors, (45), 6 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-21 06:34:27,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 200 transitions. [2023-12-21 06:34:27,960 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 200 transitions. Word has length 42 [2023-12-21 06:34:27,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:34:27,960 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 200 transitions. [2023-12-21 06:34:27,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-21 06:34:27,960 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 200 transitions. [2023-12-21 06:34:27,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-21 06:34:27,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:34:27,961 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:34:27,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 06:34:28,165 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 [2023-12-21 06:34:28,166 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:34:28,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:34:28,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1174265188, now seen corresponding path program 1 times [2023-12-21 06:34:28,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:34:28,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676184562] [2023-12-21 06:34:28,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:28,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:34:28,173 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:34:28,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1042393883] [2023-12-21 06:34:28,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:28,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:34:28,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:34:28,175 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) [2023-12-21 06:34:28,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 06:34:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:34:28,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 06:34:28,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:34:28,527 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 06:34:28,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:34:28,717 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 06:34:28,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:34:28,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676184562] [2023-12-21 06:34:28,718 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:34:28,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042393883] [2023-12-21 06:34:28,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042393883] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:34:28,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:34:28,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 20 [2023-12-21 06:34:28,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289184335] [2023-12-21 06:34:28,718 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:34:28,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 06:34:28,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:34:28,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 06:34:28,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2023-12-21 06:34:28,719 INFO L87 Difference]: Start difference. First operand 138 states and 200 transitions. Second operand has 20 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 16 states have internal predecessors, (41), 5 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2023-12-21 06:34:30,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:34:30,531 INFO L93 Difference]: Finished difference Result 185 states and 260 transitions. [2023-12-21 06:34:30,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 06:34:30,531 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 16 states have internal predecessors, (41), 5 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 42 [2023-12-21 06:34:30,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:34:30,534 INFO L225 Difference]: With dead ends: 185 [2023-12-21 06:34:30,534 INFO L226 Difference]: Without dead ends: 183 [2023-12-21 06:34:30,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=296, Invalid=1186, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 06:34:30,535 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 197 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 06:34:30,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 252 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 06:34:30,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-21 06:34:30,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 174. [2023-12-21 06:34:30,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 111 states have (on average 1.2612612612612613) internal successors, (140), 116 states have internal predecessors, (140), 54 states have call successors, (54), 8 states have call predecessors, (54), 8 states have return successors, (53), 49 states have call predecessors, (53), 53 states have call successors, (53) [2023-12-21 06:34:30,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 247 transitions. [2023-12-21 06:34:30,599 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 247 transitions. Word has length 42 [2023-12-21 06:34:30,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:34:30,599 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 247 transitions. [2023-12-21 06:34:30,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 16 states have internal predecessors, (41), 5 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2023-12-21 06:34:30,599 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 247 transitions. [2023-12-21 06:34:30,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-21 06:34:30,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:34:30,601 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:34:30,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 06:34:30,805 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 [2023-12-21 06:34:30,806 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:34:30,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:34:30,807 INFO L85 PathProgramCache]: Analyzing trace with hash -829983206, now seen corresponding path program 2 times [2023-12-21 06:34:30,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:34:30,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936248442] [2023-12-21 06:34:30,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:30,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:34:30,817 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:34:30,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [274865582] [2023-12-21 06:34:30,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 06:34:30,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:34:30,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:34:30,824 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:34:30,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 06:34:30,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 06:34:30,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 06:34:30,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 06:34:30,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:34:30,887 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 06:34:30,888 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 06:34:30,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:34:30,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936248442] [2023-12-21 06:34:30,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:34:30,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274865582] [2023-12-21 06:34:30,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274865582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 06:34:30,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 06:34:30,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 06:34:30,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840374563] [2023-12-21 06:34:30,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 06:34:30,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 06:34:30,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:34:30,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 06:34:30,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 06:34:30,893 INFO L87 Difference]: Start difference. First operand 174 states and 247 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 06:34:30,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:34:30,958 INFO L93 Difference]: Finished difference Result 220 states and 307 transitions. [2023-12-21 06:34:30,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 06:34:30,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2023-12-21 06:34:30,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:34:30,959 INFO L225 Difference]: With dead ends: 220 [2023-12-21 06:34:30,960 INFO L226 Difference]: Without dead ends: 139 [2023-12-21 06:34:30,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 06:34:30,961 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 19 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 06:34:30,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 155 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 06:34:30,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-12-21 06:34:30,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 116. [2023-12-21 06:34:30,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 75 states have internal predecessors, (84), 36 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-21 06:34:30,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 155 transitions. [2023-12-21 06:34:30,982 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 155 transitions. Word has length 42 [2023-12-21 06:34:30,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:34:30,982 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 155 transitions. [2023-12-21 06:34:30,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 06:34:30,983 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 155 transitions. [2023-12-21 06:34:30,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-21 06:34:30,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:34:30,983 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:34:30,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 06:34:31,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:34:31,190 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:34:31,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:34:31,204 INFO L85 PathProgramCache]: Analyzing trace with hash 225223382, now seen corresponding path program 1 times [2023-12-21 06:34:31,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:34:31,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626537950] [2023-12-21 06:34:31,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:31,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:34:31,210 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:34:31,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854394839] [2023-12-21 06:34:31,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:31,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:34:31,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:34:31,216 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:34:31,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 06:34:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:34:31,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 06:34:31,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:34:31,283 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 06:34:31,283 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 06:34:31,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:34:31,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626537950] [2023-12-21 06:34:31,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:34:31,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854394839] [2023-12-21 06:34:31,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854394839] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 06:34:31,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 06:34:31,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 06:34:31,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012834323] [2023-12-21 06:34:31,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 06:34:31,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 06:34:31,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:34:31,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 06:34:31,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 06:34:31,285 INFO L87 Difference]: Start difference. First operand 116 states and 155 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 06:34:31,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:34:31,376 INFO L93 Difference]: Finished difference Result 154 states and 217 transitions. [2023-12-21 06:34:31,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 06:34:31,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2023-12-21 06:34:31,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:34:31,377 INFO L225 Difference]: With dead ends: 154 [2023-12-21 06:34:31,377 INFO L226 Difference]: Without dead ends: 152 [2023-12-21 06:34:31,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 06:34:31,378 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 8 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 06:34:31,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 152 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 06:34:31,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-21 06:34:31,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 143. [2023-12-21 06:34:31,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 78 states have (on average 1.1666666666666667) internal successors, (91), 86 states have internal predecessors, (91), 55 states have call successors, (55), 9 states have call predecessors, (55), 9 states have return successors, (54), 47 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 06:34:31,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 200 transitions. [2023-12-21 06:34:31,408 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 200 transitions. Word has length 47 [2023-12-21 06:34:31,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:34:31,408 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 200 transitions. [2023-12-21 06:34:31,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 06:34:31,408 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 200 transitions. [2023-12-21 06:34:31,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-21 06:34:31,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:34:31,409 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:34:31,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 06:34:31,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-21 06:34:31,614 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:34:31,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:34:31,614 INFO L85 PathProgramCache]: Analyzing trace with hash 371933676, now seen corresponding path program 1 times [2023-12-21 06:34:31,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:34:31,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996339413] [2023-12-21 06:34:31,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:31,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:34:31,630 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:34:31,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [200466145] [2023-12-21 06:34:31,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:31,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:34:31,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:34:31,634 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:34:31,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 06:34:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:34:31,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-21 06:34:31,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:34:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 06:34:32,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:34:32,674 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-21 06:34:32,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:34:32,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996339413] [2023-12-21 06:34:32,674 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:34:32,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200466145] [2023-12-21 06:34:32,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200466145] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:34:32,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:34:32,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 26 [2023-12-21 06:34:32,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338288442] [2023-12-21 06:34:32,675 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:34:32,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 06:34:32,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:34:32,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 06:34:32,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2023-12-21 06:34:32,676 INFO L87 Difference]: Start difference. First operand 143 states and 200 transitions. Second operand has 26 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-21 06:34:40,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:34:40,831 INFO L93 Difference]: Finished difference Result 379 states and 546 transitions. [2023-12-21 06:34:40,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 06:34:40,832 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 59 [2023-12-21 06:34:40,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:34:40,835 INFO L225 Difference]: With dead ends: 379 [2023-12-21 06:34:40,835 INFO L226 Difference]: Without dead ends: 272 [2023-12-21 06:34:40,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=474, Invalid=2282, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 06:34:40,838 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 164 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-21 06:34:40,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 357 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-21 06:34:40,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-12-21 06:34:40,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 227. [2023-12-21 06:34:40,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 138 states have (on average 1.181159420289855) internal successors, (163), 145 states have internal predecessors, (163), 75 states have call successors, (75), 13 states have call predecessors, (75), 13 states have return successors, (74), 68 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-21 06:34:40,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 312 transitions. [2023-12-21 06:34:40,920 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 312 transitions. Word has length 59 [2023-12-21 06:34:40,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:34:40,921 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 312 transitions. [2023-12-21 06:34:40,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-21 06:34:40,921 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 312 transitions. [2023-12-21 06:34:40,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 06:34:40,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:34:40,922 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:34:40,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 06:34:41,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-21 06:34:41,127 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:34:41,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:34:41,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1835197705, now seen corresponding path program 1 times [2023-12-21 06:34:41,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:34:41,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331724630] [2023-12-21 06:34:41,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:41,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:34:41,144 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:34:41,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265866161] [2023-12-21 06:34:41,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:41,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:34:41,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:34:41,149 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:34:41,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 06:34:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:34:41,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-21 06:34:41,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:34:41,370 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-21 06:34:41,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:34:41,494 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-21 06:34:41,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:34:41,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331724630] [2023-12-21 06:34:41,495 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:34:41,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265866161] [2023-12-21 06:34:41,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265866161] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:34:41,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:34:41,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 19 [2023-12-21 06:34:41,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035067506] [2023-12-21 06:34:41,495 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:34:41,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 06:34:41,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:34:41,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 06:34:41,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-21 06:34:41,496 INFO L87 Difference]: Start difference. First operand 227 states and 312 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 15 states have internal predecessors, (38), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 8 states have call predecessors, (22), 5 states have call successors, (22) [2023-12-21 06:34:41,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:34:41,881 INFO L93 Difference]: Finished difference Result 361 states and 497 transitions. [2023-12-21 06:34:41,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 06:34:41,881 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 15 states have internal predecessors, (38), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 8 states have call predecessors, (22), 5 states have call successors, (22) Word has length 69 [2023-12-21 06:34:41,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:34:41,885 INFO L225 Difference]: With dead ends: 361 [2023-12-21 06:34:41,886 INFO L226 Difference]: Without dead ends: 233 [2023-12-21 06:34:41,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2023-12-21 06:34:41,887 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 78 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 06:34:41,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 259 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 06:34:41,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-12-21 06:34:41,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 232. [2023-12-21 06:34:41,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 142 states have (on average 1.1690140845070423) internal successors, (166), 148 states have internal predecessors, (166), 75 states have call successors, (75), 14 states have call predecessors, (75), 14 states have return successors, (74), 69 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-21 06:34:41,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 315 transitions. [2023-12-21 06:34:41,985 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 315 transitions. Word has length 69 [2023-12-21 06:34:41,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:34:41,986 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 315 transitions. [2023-12-21 06:34:41,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 15 states have internal predecessors, (38), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 8 states have call predecessors, (22), 5 states have call successors, (22) [2023-12-21 06:34:41,986 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 315 transitions. [2023-12-21 06:34:41,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-21 06:34:41,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:34:41,986 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:34:41,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 06:34:42,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-21 06:34:42,192 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:34:42,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:34:42,192 INFO L85 PathProgramCache]: Analyzing trace with hash 791958698, now seen corresponding path program 1 times [2023-12-21 06:34:42,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:34:42,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313430205] [2023-12-21 06:34:42,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:42,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:34:42,207 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:34:42,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851243486] [2023-12-21 06:34:42,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:42,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:34:42,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:34:42,210 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:34:42,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 06:34:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:34:42,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 06:34:42,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:34:42,338 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-21 06:34:42,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:34:42,437 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-21 06:34:42,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:34:42,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313430205] [2023-12-21 06:34:42,437 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:34:42,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851243486] [2023-12-21 06:34:42,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851243486] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:34:42,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:34:42,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2023-12-21 06:34:42,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774553068] [2023-12-21 06:34:42,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:34:42,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 06:34:42,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:34:42,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 06:34:42,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-12-21 06:34:42,439 INFO L87 Difference]: Start difference. First operand 232 states and 315 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 14 states have internal predecessors, (45), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-12-21 06:34:42,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:34:42,683 INFO L93 Difference]: Finished difference Result 340 states and 462 transitions. [2023-12-21 06:34:42,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 06:34:42,684 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 14 states have internal predecessors, (45), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 67 [2023-12-21 06:34:42,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:34:42,685 INFO L225 Difference]: With dead ends: 340 [2023-12-21 06:34:42,685 INFO L226 Difference]: Without dead ends: 221 [2023-12-21 06:34:42,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2023-12-21 06:34:42,685 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 72 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 06:34:42,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 250 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 06:34:42,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-21 06:34:42,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 207. [2023-12-21 06:34:42,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 121 states have (on average 1.140495867768595) internal successors, (138), 126 states have internal predecessors, (138), 71 states have call successors, (71), 14 states have call predecessors, (71), 14 states have return successors, (70), 66 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-21 06:34:42,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 279 transitions. [2023-12-21 06:34:42,753 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 279 transitions. Word has length 67 [2023-12-21 06:34:42,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:34:42,753 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 279 transitions. [2023-12-21 06:34:42,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 14 states have internal predecessors, (45), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-12-21 06:34:42,753 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 279 transitions. [2023-12-21 06:34:42,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-21 06:34:42,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:34:42,754 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:34:42,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 06:34:42,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-21 06:34:42,959 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:34:42,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:34:42,959 INFO L85 PathProgramCache]: Analyzing trace with hash 807741843, now seen corresponding path program 1 times [2023-12-21 06:34:42,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:34:42,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959083775] [2023-12-21 06:34:42,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:42,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:34:42,970 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:34:42,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [798048008] [2023-12-21 06:34:42,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:34:42,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:34:42,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:34:42,971 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:34:43,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 06:34:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:34:43,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-21 06:34:43,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:34:43,926 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 36 proven. 32 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-12-21 06:34:43,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:34:48,990 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 30 proven. 26 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-21 06:34:48,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:34:48,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959083775] [2023-12-21 06:34:48,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:34:48,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798048008] [2023-12-21 06:34:48,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798048008] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:34:48,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:34:48,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16] total 33 [2023-12-21 06:34:48,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504806899] [2023-12-21 06:34:48,992 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:34:48,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-21 06:34:48,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:34:48,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-21 06:34:48,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=890, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 06:34:48,994 INFO L87 Difference]: Start difference. First operand 207 states and 279 transitions. Second operand has 33 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 10 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) [2023-12-21 06:34:59,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:34:59,911 INFO L93 Difference]: Finished difference Result 349 states and 467 transitions. [2023-12-21 06:34:59,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-21 06:34:59,912 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 10 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) Word has length 86 [2023-12-21 06:34:59,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:34:59,914 INFO L225 Difference]: With dead ends: 349 [2023-12-21 06:34:59,914 INFO L226 Difference]: Without dead ends: 222 [2023-12-21 06:34:59,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=927, Invalid=3495, Unknown=0, NotChecked=0, Total=4422 [2023-12-21 06:34:59,916 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 217 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-21 06:34:59,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 506 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-21 06:34:59,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-12-21 06:35:00,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2023-12-21 06:35:00,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 128 states have (on average 1.15625) internal successors, (148), 132 states have internal predecessors, (148), 77 states have call successors, (77), 14 states have call predecessors, (77), 14 states have return successors, (76), 73 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-21 06:35:00,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 301 transitions. [2023-12-21 06:35:00,043 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 301 transitions. Word has length 86 [2023-12-21 06:35:00,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:35:00,043 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 301 transitions. [2023-12-21 06:35:00,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 10 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) [2023-12-21 06:35:00,044 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 301 transitions. [2023-12-21 06:35:00,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 06:35:00,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:35:00,044 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:35:00,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-21 06:35:00,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:35:00,250 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:35:00,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:35:00,250 INFO L85 PathProgramCache]: Analyzing trace with hash -945949089, now seen corresponding path program 1 times [2023-12-21 06:35:00,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:35:00,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613139817] [2023-12-21 06:35:00,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:35:00,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:35:00,256 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:35:00,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [630063578] [2023-12-21 06:35:00,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:35:00,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:35:00,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:35:00,257 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:35:00,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 06:35:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:35:00,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 06:35:00,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:35:00,433 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 90 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-12-21 06:35:00,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:35:00,634 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-12-21 06:35:00,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:35:00,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613139817] [2023-12-21 06:35:00,634 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:35:00,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630063578] [2023-12-21 06:35:00,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630063578] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:35:00,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:35:00,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2023-12-21 06:35:00,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678387088] [2023-12-21 06:35:00,635 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:35:00,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 06:35:00,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:35:00,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 06:35:00,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-12-21 06:35:00,636 INFO L87 Difference]: Start difference. First operand 220 states and 301 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2023-12-21 06:35:01,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:35:01,031 INFO L93 Difference]: Finished difference Result 360 states and 492 transitions. [2023-12-21 06:35:01,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 06:35:01,032 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) Word has length 89 [2023-12-21 06:35:01,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:35:01,033 INFO L225 Difference]: With dead ends: 360 [2023-12-21 06:35:01,033 INFO L226 Difference]: Without dead ends: 214 [2023-12-21 06:35:01,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=695, Unknown=0, NotChecked=0, Total=870 [2023-12-21 06:35:01,034 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 43 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 06:35:01,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 375 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 06:35:01,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-12-21 06:35:01,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 208. [2023-12-21 06:35:01,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 124 states have (on average 1.153225806451613) internal successors, (143), 125 states have internal predecessors, (143), 69 states have call successors, (69), 14 states have call predecessors, (69), 14 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-21 06:35:01,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 280 transitions. [2023-12-21 06:35:01,155 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 280 transitions. Word has length 89 [2023-12-21 06:35:01,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:35:01,155 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 280 transitions. [2023-12-21 06:35:01,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2023-12-21 06:35:01,156 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 280 transitions. [2023-12-21 06:35:01,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 06:35:01,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:35:01,156 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:35:01,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-21 06:35:01,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-21 06:35:01,361 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:35:01,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:35:01,361 INFO L85 PathProgramCache]: Analyzing trace with hash 928647649, now seen corresponding path program 1 times [2023-12-21 06:35:01,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:35:01,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723976727] [2023-12-21 06:35:01,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:35:01,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:35:01,367 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:35:01,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2099469598] [2023-12-21 06:35:01,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:35:01,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:35:01,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:35:01,368 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:35:01,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 06:35:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:35:01,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 06:35:01,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:35:01,607 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 58 proven. 19 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2023-12-21 06:35:01,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:35:01,912 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 28 proven. 19 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-12-21 06:35:01,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:35:01,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723976727] [2023-12-21 06:35:01,912 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:35:01,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099469598] [2023-12-21 06:35:01,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099469598] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:35:01,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:35:01,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2023-12-21 06:35:01,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672306919] [2023-12-21 06:35:01,913 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:35:01,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 06:35:01,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:35:01,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 06:35:01,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-12-21 06:35:01,914 INFO L87 Difference]: Start difference. First operand 208 states and 280 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) [2023-12-21 06:35:02,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:35:02,356 INFO L93 Difference]: Finished difference Result 212 states and 283 transitions. [2023-12-21 06:35:02,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 06:35:02,357 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) Word has length 89 [2023-12-21 06:35:02,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:35:02,357 INFO L225 Difference]: With dead ends: 212 [2023-12-21 06:35:02,357 INFO L226 Difference]: Without dead ends: 0 [2023-12-21 06:35:02,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 158 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=742, Unknown=0, NotChecked=0, Total=930 [2023-12-21 06:35:02,358 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 52 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 06:35:02,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 363 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 06:35:02,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-21 06:35:02,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-21 06:35:02,359 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) [2023-12-21 06:35:02,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-21 06:35:02,359 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 89 [2023-12-21 06:35:02,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:35:02,359 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-21 06:35:02,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) [2023-12-21 06:35:02,359 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-21 06:35:02,359 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-21 06:35:02,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 06:35:02,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-21 06:35:02,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-21 06:35:02,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-21 06:35:05,171 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse5 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse8 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse4 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse9 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse6 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse10 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (let ((.cse3 (mod |ULTIMATE.start_main_~b~0#1| 2))) (let ((.cse2 (* 2 (div (+ |ULTIMATE.start_main_~b~0#1| .cse3) 2)))) (and (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) .cse0 .cse1 (<= |ULTIMATE.start_main_~a~0#1| 2) (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~a~0#1|) (<= (+ (* 2 |ULTIMATE.start_main_~b~0#1|) .cse2) .cse3) .cse4 .cse5 .cse6 (<= .cse3 .cse2)))) (and (= |ULTIMATE.start_main_~b~0#1| 1) .cse0 .cse1 (= 2 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~s~0#1| 0) .cse5) (and (<= (+ |ULTIMATE.start_main_~x~0#1| 1) |ULTIMATE.start_main_~y~0#1|) .cse7 (<= |ULTIMATE.start_main_~y~0#1| 2) .cse8 .cse4 (= (+ 2 |ULTIMATE.start_main_~q~0#1|) 0) .cse9 (= |ULTIMATE.start_main_~y~0#1| (+ (* 2 |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~b~0#1|)) .cse10) (and .cse7 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 2) (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse8 (= |ULTIMATE.start_main_~q~0#1| 0) .cse4 .cse9 .cse6 .cse10))) [2023-12-21 06:35:05,171 INFO L895 garLoopResultBuilder]: At program point L35-3(lines 35 73) the Hoare annotation is: (let ((.cse0 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)))) (and (= .cse0 (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~a~0#1|) (or (= |ULTIMATE.start_main_~b~0#1| 0) (= .cse0 |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2))) [2023-12-21 06:35:05,171 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (let ((.cse6 (= |ULTIMATE.start_main_~d~0#1| 1)) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|)) (.cse1 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse8 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse9 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse10 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse12 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse13 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse14 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse15 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse16 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= 2 |ULTIMATE.start_main_~d~0#1|)) (.cse17 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~y~0#1|))) (or (and (= |ULTIMATE.start_main_~b~0#1| 1) (= 2 |ULTIMATE.start_main_~x~0#1|) .cse0 (= 2 |ULTIMATE.start_main_~v~0#1|) .cse1 .cse2 (= |ULTIMATE.start_main_~y~0#1| 1) .cse3 (= 2 |ULTIMATE.start_main_~a~0#1|) (= 2 |ULTIMATE.start_main_~c~0#1|) .cse4 .cse5) (and .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse3 .cse13 .cse14 .cse15 .cse16 .cse17) (let ((.cse18 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|))) (and .cse6 .cse0 (or (= (* 3 |ULTIMATE.start_main_~y~0#1|) .cse18) (not (= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|))) .cse11 (let ((.cse19 (mod (+ |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|) 2))) (< .cse19 (+ (* 2 (div (+ .cse19 (* (- 1) |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|) 2)) 1))) (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse1 .cse2 .cse3 .cse14 (<= |ULTIMATE.start_main_~c~0#1| 2) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) (or (= (* 2 |ULTIMATE.start_main_~y~0#1|) .cse18) (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|))) .cse5)) (and .cse7 .cse8 .cse9 .cse10 .cse12 .cse3 .cse13 .cse14 .cse15 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse16 .cse4 .cse17))) [2023-12-21 06:35:05,171 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2023-12-21 06:35:05,172 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2023-12-21 06:35:05,172 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2023-12-21 06:35:05,172 INFO L899 garLoopResultBuilder]: For program point L53(lines 49 59) no Hoare annotation was computed. [2023-12-21 06:35:05,172 INFO L895 garLoopResultBuilder]: At program point L49-2(lines 49 59) the Hoare annotation is: (let ((.cse6 (= |ULTIMATE.start_main_~d~0#1| 1)) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|)) (.cse1 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse8 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse9 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse10 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse12 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse13 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse14 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse15 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse16 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= 2 |ULTIMATE.start_main_~d~0#1|)) (.cse17 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~y~0#1|))) (or (and (= |ULTIMATE.start_main_~b~0#1| 1) (= 2 |ULTIMATE.start_main_~x~0#1|) .cse0 (= 2 |ULTIMATE.start_main_~v~0#1|) .cse1 .cse2 (= |ULTIMATE.start_main_~y~0#1| 1) .cse3 (= 2 |ULTIMATE.start_main_~a~0#1|) (= 2 |ULTIMATE.start_main_~c~0#1|) .cse4 .cse5) (and .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse3 .cse13 .cse14 .cse15 .cse16 .cse17) (let ((.cse18 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|))) (and .cse6 .cse0 (or (= (* 3 |ULTIMATE.start_main_~y~0#1|) .cse18) (not (= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|))) .cse11 (let ((.cse19 (mod (+ |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|) 2))) (< .cse19 (+ (* 2 (div (+ .cse19 (* (- 1) |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|) 2)) 1))) (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse1 .cse2 .cse3 .cse14 (<= |ULTIMATE.start_main_~c~0#1| 2) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) (or (= (* 2 |ULTIMATE.start_main_~y~0#1|) .cse18) (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|))) .cse5)) (and .cse7 .cse8 .cse9 .cse10 .cse12 .cse3 .cse13 .cse14 .cse15 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse16 .cse4 .cse17))) [2023-12-21 06:35:05,172 INFO L899 garLoopResultBuilder]: For program point L49-3(lines 49 59) no Hoare annotation was computed. [2023-12-21 06:35:05,172 INFO L899 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2023-12-21 06:35:05,172 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-21 06:35:05,172 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2023-12-21 06:35:05,172 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse6 (= |ULTIMATE.start_main_~d~0#1| 1)) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|)) (.cse1 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse8 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse9 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse10 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse12 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse13 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse14 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse15 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse16 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= 2 |ULTIMATE.start_main_~d~0#1|)) (.cse17 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~y~0#1|))) (or (and (= |ULTIMATE.start_main_~b~0#1| 1) (= 2 |ULTIMATE.start_main_~x~0#1|) .cse0 (= 2 |ULTIMATE.start_main_~v~0#1|) .cse1 .cse2 (= |ULTIMATE.start_main_~y~0#1| 1) .cse3 (= 2 |ULTIMATE.start_main_~a~0#1|) (= 2 |ULTIMATE.start_main_~c~0#1|) .cse4 .cse5) (and .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse3 .cse13 .cse14 .cse15 .cse16 .cse17) (let ((.cse18 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|))) (and .cse6 .cse0 (or (= (* 3 |ULTIMATE.start_main_~y~0#1|) .cse18) (not (= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|))) .cse11 (let ((.cse19 (mod (+ |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|) 2))) (< .cse19 (+ (* 2 (div (+ .cse19 (* (- 1) |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|) 2)) 1))) (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse1 .cse2 .cse3 .cse14 (<= |ULTIMATE.start_main_~c~0#1| 2) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) (or (= (* 2 |ULTIMATE.start_main_~y~0#1|) .cse18) (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|))) .cse5)) (and .cse7 .cse8 .cse9 .cse10 .cse12 .cse3 .cse13 .cse14 .cse15 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse16 .cse4 .cse17))) [2023-12-21 06:35:05,172 INFO L895 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: (let ((.cse6 (= |ULTIMATE.start_main_~d~0#1| 1)) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|)) (.cse1 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse8 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse9 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse10 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse12 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse13 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse14 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse15 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse16 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= 2 |ULTIMATE.start_main_~d~0#1|)) (.cse17 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~y~0#1|))) (or (and (= |ULTIMATE.start_main_~b~0#1| 1) (= 2 |ULTIMATE.start_main_~x~0#1|) .cse0 (= 2 |ULTIMATE.start_main_~v~0#1|) .cse1 .cse2 (= |ULTIMATE.start_main_~y~0#1| 1) .cse3 (= 2 |ULTIMATE.start_main_~a~0#1|) (= 2 |ULTIMATE.start_main_~c~0#1|) .cse4 .cse5) (and .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse3 .cse13 .cse14 .cse15 .cse16 .cse17) (let ((.cse18 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|))) (and .cse6 .cse0 (or (= (* 3 |ULTIMATE.start_main_~y~0#1|) .cse18) (not (= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|))) .cse11 (let ((.cse19 (mod (+ |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|) 2))) (< .cse19 (+ (* 2 (div (+ .cse19 (* (- 1) |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|) 2)) 1))) (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse1 .cse2 .cse3 .cse14 (<= |ULTIMATE.start_main_~c~0#1| 2) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) (or (= (* 2 |ULTIMATE.start_main_~y~0#1|) .cse18) (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|))) .cse5)) (and .cse7 .cse8 .cse9 .cse10 .cse12 .cse3 .cse13 .cse14 .cse15 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse16 .cse4 .cse17))) [2023-12-21 06:35:05,172 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-21 06:35:05,173 INFO L895 garLoopResultBuilder]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse10 (+ |ULTIMATE.start_main_~c~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse8 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse9 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse5 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse14 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse15 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse16 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse6 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse17 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse12 (* 2 |ULTIMATE.start_main_~b~0#1|))) (or (and .cse0 .cse1 .cse2 (<= |ULTIMATE.start_main_~b~0#1| 2) (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse2 .cse3 .cse4 .cse7 (<= .cse10 |ULTIMATE.start_main_~b~0#1|) .cse8 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse9 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~x~0#1|)) (let ((.cse13 (mod |ULTIMATE.start_main_~c~0#1| 2))) (let ((.cse11 (* (div (+ |ULTIMATE.start_main_~c~0#1| .cse13) 2) 2))) (and (= (+ |ULTIMATE.start_main_~y~0#1| (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|)) (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) .cse0 .cse2 .cse3 .cse4 (<= (+ .cse11 .cse12) (+ 2 .cse13)) (<= .cse10 .cse12) .cse6 (<= .cse13 .cse11) .cse7 .cse8 .cse9))) (and (= |ULTIMATE.start_main_~b~0#1| 1) .cse14 .cse1 (= 2 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~x~0#1| 1) .cse15 .cse5 .cse16 .cse17 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (and .cse14 (<= |ULTIMATE.start_main_~y~0#1| 2) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse15 .cse16 .cse6 .cse17 (= (+ .cse12 |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~y~0#1|) (= 2 |ULTIMATE.start_main_~k~0#1|) (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~y~0#1|)))) [2023-12-21 06:35:05,173 INFO L899 garLoopResultBuilder]: For program point L42-3(lines 42 62) no Hoare annotation was computed. [2023-12-21 06:35:05,173 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2023-12-21 06:35:05,173 INFO L902 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2023-12-21 06:35:05,173 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2023-12-21 06:35:05,173 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse6 (= |ULTIMATE.start_main_~d~0#1| 1)) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|)) (.cse1 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse8 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse9 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse10 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse12 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse13 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse14 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse15 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse16 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= 2 |ULTIMATE.start_main_~d~0#1|)) (.cse17 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~y~0#1|))) (or (and (= |ULTIMATE.start_main_~b~0#1| 1) (= 2 |ULTIMATE.start_main_~x~0#1|) .cse0 (= 2 |ULTIMATE.start_main_~v~0#1|) .cse1 .cse2 (= |ULTIMATE.start_main_~y~0#1| 1) .cse3 (= 2 |ULTIMATE.start_main_~a~0#1|) (= 2 |ULTIMATE.start_main_~c~0#1|) .cse4 .cse5) (and .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse3 .cse13 .cse14 .cse15 .cse16 .cse17) (let ((.cse18 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|))) (and .cse6 .cse0 (or (= (* 3 |ULTIMATE.start_main_~y~0#1|) .cse18) (not (= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|))) .cse11 (let ((.cse19 (mod (+ |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|) 2))) (< .cse19 (+ (* 2 (div (+ .cse19 (* (- 1) |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|) 2)) 1))) (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse1 .cse2 .cse3 .cse14 (<= |ULTIMATE.start_main_~c~0#1| 2) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) (or (= (* 2 |ULTIMATE.start_main_~y~0#1|) .cse18) (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|))) .cse5)) (and .cse7 .cse8 .cse9 .cse10 .cse12 .cse3 .cse13 .cse14 .cse15 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse16 .cse4 .cse17))) [2023-12-21 06:35:05,173 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 44) no Hoare annotation was computed. [2023-12-21 06:35:05,173 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2023-12-21 06:35:05,173 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2023-12-21 06:35:05,173 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2023-12-21 06:35:05,173 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2023-12-21 06:35:05,173 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2023-12-21 06:35:05,173 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2023-12-21 06:35:05,173 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2023-12-21 06:35:05,173 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 16) the Hoare annotation is: true [2023-12-21 06:35:05,173 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2023-12-21 06:35:05,174 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-12-21 06:35:05,175 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:35:05,177 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 06:35:05,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 06:35:05 BoogieIcfgContainer [2023-12-21 06:35:05,189 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 06:35:05,189 INFO L158 Benchmark]: Toolchain (without parser) took 44828.41ms. Allocated memory was 183.5MB in the beginning and 250.6MB in the end (delta: 67.1MB). Free memory was 135.9MB in the beginning and 101.4MB in the end (delta: 34.5MB). Peak memory consumption was 135.1MB. Max. memory is 8.0GB. [2023-12-21 06:35:05,189 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 183.5MB. Free memory is still 136.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 06:35:05,189 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.14ms. Allocated memory is still 183.5MB. Free memory was 135.8MB in the beginning and 124.5MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 06:35:05,190 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.00ms. Allocated memory is still 183.5MB. Free memory was 124.2MB in the beginning and 122.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 06:35:05,190 INFO L158 Benchmark]: Boogie Preprocessor took 20.52ms. Allocated memory is still 183.5MB. Free memory was 122.8MB in the beginning and 121.1MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 06:35:05,190 INFO L158 Benchmark]: RCFGBuilder took 234.91ms. Allocated memory is still 183.5MB. Free memory was 120.7MB in the beginning and 108.5MB in the end (delta: 12.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 06:35:05,190 INFO L158 Benchmark]: TraceAbstraction took 44370.30ms. Allocated memory was 183.5MB in the beginning and 250.6MB in the end (delta: 67.1MB). Free memory was 107.7MB in the beginning and 101.4MB in the end (delta: 6.3MB). Peak memory consumption was 106.8MB. Max. memory is 8.0GB. [2023-12-21 06:35:05,191 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 183.5MB. Free memory is still 136.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 173.14ms. Allocated memory is still 183.5MB. Free memory was 135.8MB in the beginning and 124.5MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.00ms. Allocated memory is still 183.5MB. Free memory was 124.2MB in the beginning and 122.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.52ms. Allocated memory is still 183.5MB. Free memory was 122.8MB in the beginning and 121.1MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 234.91ms. Allocated memory is still 183.5MB. Free memory was 120.7MB in the beginning and 108.5MB in the end (delta: 12.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 44370.30ms. Allocated memory was 183.5MB in the beginning and 250.6MB in the end (delta: 67.1MB). Free memory was 107.7MB in the beginning and 101.4MB in the end (delta: 6.3MB). Peak memory consumption was 106.8MB. 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: 13]: 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, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 44.3s, OverallIterations: 16, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 24.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1125 SdHoareTripleChecker+Valid, 11.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1080 mSDsluCounter, 3756 SdHoareTripleChecker+Invalid, 10.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3237 mSDsCounter, 733 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3553 IncrementalHoareTripleChecker+Invalid, 4286 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 733 mSolverCounterUnsat, 519 mSDtfsCounter, 3553 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1598 GetRequests, 1240 SyntacticMatches, 8 SemanticMatches, 350 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2604 ImplicationChecksByTransitivity, 19.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=232occurred in iteration=12, InterpolantAutomatonStates: 234, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 16 MinimizatonAttempts, 171 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 329 PreInvPairs, 366 NumberOfFragments, 1505 HoareAnnotationTreeSize, 329 FormulaSimplifications, 13061 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 14 FormulaSimplificationsInter, 1637 FormulaSimplificationTreeSizeReductionInter, 2.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 12.0s InterpolantComputationTime, 857 NumberOfCodeBlocks, 857 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1448 ConstructedInterpolants, 2 QuantifiedInterpolants, 8658 SizeOfPredicates, 89 NumberOfNonLiveVariables, 2213 ConjunctsInSsa, 410 ConjunctsInUnsatCore, 27 InterpolantComputations, 6 PerfectInterpolantSequences, 1942/2195 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: 42]: Loop Invariant Derived loop invariant: ((((((((((((((((p == 1) && (a == c)) && (b == y)) && (b <= 2)) && (1 <= b)) && (r == 0)) && (q == 0)) && (k == 0)) && (1 <= x)) && (a == x)) && (x <= 2)) && (s == 1)) || (((((((((((k == 1) && (p == 1)) && (b == y)) && (r == 0)) && (q == 0)) && (a == x)) && ((c + 1) <= b)) && (x <= 2)) && (b <= x)) && (s == 1)) && ((b + c) == x))) || (((((((((((((y + (k * y)) == (b + x)) && (p == 1)) && (b == y)) && (r == 0)) && (q == 0)) && (((((c + (c % 2)) / 2) * 2) + (2 * b)) <= (2 + (c % 2)))) && ((c + 1) <= (2 * b))) && (1 <= x)) && ((c % 2) <= (((c + (c % 2)) / 2) * 2))) && (a == x)) && (x <= 2)) && (s == 1))) || ((((((((((b == 1) && (p == 0)) && (a == c)) && (2 == y)) && (x == 1)) && (q == 1)) && (k == 0)) && (s == 0)) && (r == 1)) && (c == y))) || (((((((((((p == 0) && (y <= 2)) && (a == y)) && (b == x)) && (q == 1)) && (s == 0)) && (1 <= x)) && (r == 1)) && (((2 * b) + c) == y)) && (2 == k)) && ((b + 1) <= y))) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (((((((((((((((b == 1) && (2 == x)) && (p == 1)) && (2 == v)) && (r == 0)) && (q == 0)) && (y == 1)) && (k == 0)) && (2 == a)) && (2 == c)) && (2 == d)) && (s == 1)) || (((((((((((((d == 1) && (p == 0)) && (y <= 2)) && (a == c)) && (b == x)) && (b == v)) && (q == 1)) && (k == 0)) && (s == 0)) && (1 <= x)) && (r == 1)) && (c == y)) && ((b + 1) <= y))) || (((((((((((((((d == 1) && (p == 1)) && (((3 * y) == (b + x)) || !(((2 * v) == c)))) && (b == v)) && (((c + v) % 2) < ((2 * (((((c + v) % 2) + (-1 * v)) + c) / 2)) + 1))) && (1 <= b)) && (r == 0)) && (q == 0)) && (k == 0)) && (1 <= x)) && (c <= 2)) && (a == x)) && (x <= 2)) && (((2 * y) == (b + x)) || !((c == v)))) && (s == 1))) || (((((((((((((p == 0) && (y <= 2)) && (a == c)) && (b == x)) && (q == 1)) && (k == 0)) && (s == 0)) && (1 <= x)) && (r == 1)) && ((2 * b) == v)) && (c == y)) && (2 == d)) && ((b + 1) <= y))) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((((((y == ((a + (s * y)) + (q * x))) && (p == 0)) && (a == y)) && (a <= 2)) && ((b + 1) <= a)) && (((2 * b) + (2 * ((b + (b % 2)) / 2))) <= (b % 2))) && (1 <= x)) && (r == 1)) && (x <= 2)) && ((b % 2) <= (2 * ((b + (b % 2)) / 2)))) || ((((((((b == 1) && (p == 0)) && (a == y)) && (2 == y)) && (x == 1)) && (q == 1)) && (s == 0)) && (r == 1))) || ((((((((((x + 1) <= y) && (p == 1)) && (y <= 2)) && (r == 0)) && (1 <= x)) && ((2 + q) == 0)) && (a == x)) && (y == ((2 * x) + b))) && (s == 1))) || ((((((((((p == 1) && (b == y)) && (b <= 2)) && (1 <= b)) && (r == 0)) && (q == 0)) && (1 <= x)) && (a == x)) && (x <= 2)) && (s == 1))) RESULT: Ultimate proved your program to be correct! [2023-12-21 06:35:05,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...