/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/cohendiv-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 05:47:22,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 05:47:23,055 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 05:47:23,059 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 05:47:23,059 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 05:47:23,078 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 05:47:23,078 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 05:47:23,079 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 05:47:23,079 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 05:47:23,082 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 05:47:23,082 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 05:47:23,082 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 05:47:23,083 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 05:47:23,084 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 05:47:23,084 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 05:47:23,084 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 05:47:23,084 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 05:47:23,084 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 05:47:23,084 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 05:47:23,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 05:47:23,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 05:47:23,085 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 05:47:23,085 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 05:47:23,085 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 05:47:23,085 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 05:47:23,086 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 05:47:23,086 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 05:47:23,086 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 05:47:23,086 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 05:47:23,086 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 05:47:23,087 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 05:47:23,087 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 05:47:23,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 05:47:23,087 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 05:47:23,088 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 05:47:23,088 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 05:47:23,088 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 05:47:23,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 05:47:23,088 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 05:47:23,088 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 05:47:23,088 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 05:47:23,088 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 05:47:23,088 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 05:47:23,089 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 05:47:23,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 05:47:23,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 05:47:23,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 05:47:23,280 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 05:47:23,280 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 05:47:23,281 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/cohendiv-ll_valuebound1.c [2023-12-21 05:47:24,349 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 05:47:24,472 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 05:47:24,473 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohendiv-ll_valuebound1.c [2023-12-21 05:47:24,477 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe94b2eb/ea0a61dcc8364b828f9ec99dc3108e0a/FLAG5563f6d98 [2023-12-21 05:47:24,486 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe94b2eb/ea0a61dcc8364b828f9ec99dc3108e0a [2023-12-21 05:47:24,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 05:47:24,489 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 05:47:24,490 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 05:47:24,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 05:47:24,493 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 05:47:24,493 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:47:24" (1/1) ... [2023-12-21 05:47:24,494 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16496886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:24, skipping insertion in model container [2023-12-21 05:47:24,494 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:47:24" (1/1) ... [2023-12-21 05:47:24,506 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 05:47:24,595 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/cohendiv-ll_valuebound1.c[576,589] [2023-12-21 05:47:24,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 05:47:24,614 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 05:47:24,622 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/cohendiv-ll_valuebound1.c[576,589] [2023-12-21 05:47:24,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 05:47:24,644 INFO L206 MainTranslator]: Completed translation [2023-12-21 05:47:24,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:24 WrapperNode [2023-12-21 05:47:24,644 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 05:47:24,645 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 05:47:24,645 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 05:47:24,645 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 05:47:24,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:24" (1/1) ... [2023-12-21 05:47:24,657 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:24" (1/1) ... [2023-12-21 05:47:24,677 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2023-12-21 05:47:24,678 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 05:47:24,678 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 05:47:24,678 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 05:47:24,678 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 05:47:24,686 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:24" (1/1) ... [2023-12-21 05:47:24,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:24" (1/1) ... [2023-12-21 05:47:24,687 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:24" (1/1) ... [2023-12-21 05:47:24,697 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 05:47:24,698 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:24" (1/1) ... [2023-12-21 05:47:24,698 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:24" (1/1) ... [2023-12-21 05:47:24,699 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:24" (1/1) ... [2023-12-21 05:47:24,701 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:24" (1/1) ... [2023-12-21 05:47:24,702 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:24" (1/1) ... [2023-12-21 05:47:24,702 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:24" (1/1) ... [2023-12-21 05:47:24,703 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 05:47:24,704 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 05:47:24,704 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 05:47:24,704 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 05:47:24,704 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:24" (1/1) ... [2023-12-21 05:47:24,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 05:47:24,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:47:24,769 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 05:47:24,795 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 05:47:24,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 05:47:24,800 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 05:47:24,801 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 05:47:24,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 05:47:24,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 05:47:24,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 05:47:24,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-21 05:47:24,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-21 05:47:24,844 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 05:47:24,846 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 05:47:24,957 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 05:47:24,973 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 05:47:24,973 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 05:47:24,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:47:24 BoogieIcfgContainer [2023-12-21 05:47:24,974 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 05:47:24,975 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 05:47:24,975 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 05:47:24,983 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 05:47:24,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 05:47:24" (1/3) ... [2023-12-21 05:47:24,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251d62f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:47:24, skipping insertion in model container [2023-12-21 05:47:24,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:24" (2/3) ... [2023-12-21 05:47:24,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251d62f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:47:24, skipping insertion in model container [2023-12-21 05:47:24,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:47:24" (3/3) ... [2023-12-21 05:47:24,985 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound1.c [2023-12-21 05:47:24,999 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 05:47:24,999 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 05:47:25,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 05:47:25,037 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;@1cf6b6fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 05:47:25,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 05:47:25,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-21 05:47:25,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 05:47:25,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:47:25,056 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:47:25,057 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:47:25,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:47:25,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1096708698, now seen corresponding path program 1 times [2023-12-21 05:47:25,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:47:25,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817900638] [2023-12-21 05:47:25,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:25,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:47:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:47:25,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:47:25,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817900638] [2023-12-21 05:47:25,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-21 05:47:25,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003550457] [2023-12-21 05:47:25,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:25,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:47:25,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:47:25,178 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 05:47:25,200 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 05:47:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:47:25,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 05:47:25,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:47:25,291 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 05:47:25,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 05:47:25,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003550457] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:47:25,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:47:25,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 05:47:25,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607892789] [2023-12-21 05:47:25,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:47:25,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 05:47:25,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:47:25,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 05:47:25,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 05:47:25,327 INFO L87 Difference]: Start difference. First operand has 31 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 05:47:25,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:47:25,355 INFO L93 Difference]: Finished difference Result 60 states and 99 transitions. [2023-12-21 05:47:25,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 05:47:25,357 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2023-12-21 05:47:25,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:47:25,362 INFO L225 Difference]: With dead ends: 60 [2023-12-21 05:47:25,362 INFO L226 Difference]: Without dead ends: 29 [2023-12-21 05:47:25,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 05:47:25,367 INFO L413 NwaCegarLoop]: 38 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, 38 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 05:47:25,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:47:25,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-21 05:47:25,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-21 05:47:25,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-21 05:47:25,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2023-12-21 05:47:25,396 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 23 [2023-12-21 05:47:25,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:47:25,397 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2023-12-21 05:47:25,397 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 05:47:25,397 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2023-12-21 05:47:25,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 05:47:25,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:47:25,399 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:47:25,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 05:47:25,604 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 05:47:25,605 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:47:25,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:47:25,607 INFO L85 PathProgramCache]: Analyzing trace with hash 2049551268, now seen corresponding path program 1 times [2023-12-21 05:47:25,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:47:25,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60109543] [2023-12-21 05:47:25,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:25,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:47:25,635 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 05:47:25,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387770986] [2023-12-21 05:47:25,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:25,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:47:25,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:47:25,650 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 05:47:25,655 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 05:47:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:47:25,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 05:47:25,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:47:25,797 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:47:25,797 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 05:47:25,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:47:25,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60109543] [2023-12-21 05:47:25,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 05:47:25,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387770986] [2023-12-21 05:47:25,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387770986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:47:25,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:47:25,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 05:47:25,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036888582] [2023-12-21 05:47:25,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:47:25,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 05:47:25,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:47:25,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 05:47:25,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-21 05:47:25,803 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 05:47:25,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:47:25,936 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2023-12-21 05:47:25,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 05:47:25,936 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2023-12-21 05:47:25,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:47:25,938 INFO L225 Difference]: With dead ends: 40 [2023-12-21 05:47:25,938 INFO L226 Difference]: Without dead ends: 38 [2023-12-21 05:47:25,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-21 05:47:25,941 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 18 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:47:25,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 155 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:47:25,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-21 05:47:25,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2023-12-21 05:47:25,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-21 05:47:25,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2023-12-21 05:47:25,961 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 23 [2023-12-21 05:47:25,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:47:25,962 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2023-12-21 05:47:25,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 05:47:25,962 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2023-12-21 05:47:25,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-21 05:47:25,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:47:25,963 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:47:25,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-21 05:47:26,167 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 05:47:26,168 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:47:26,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:47:26,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1906772284, now seen corresponding path program 1 times [2023-12-21 05:47:26,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:47:26,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682326544] [2023-12-21 05:47:26,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:26,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:47:26,187 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 05:47:26,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [981225426] [2023-12-21 05:47:26,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:26,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:47:26,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:47:26,198 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 05:47:26,200 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 05:47:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:47:26,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 05:47:26,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:47:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:47:26,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:47:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:47:26,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:47:26,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682326544] [2023-12-21 05:47:26,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 05:47:26,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981225426] [2023-12-21 05:47:26,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981225426] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 05:47:26,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 05:47:26,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2023-12-21 05:47:26,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825500239] [2023-12-21 05:47:26,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:47:26,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 05:47:26,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:47:26,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 05:47:26,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-21 05:47:26,484 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 05:47:26,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:47:26,541 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2023-12-21 05:47:26,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 05:47:26,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2023-12-21 05:47:26,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:47:26,542 INFO L225 Difference]: With dead ends: 52 [2023-12-21 05:47:26,542 INFO L226 Difference]: Without dead ends: 49 [2023-12-21 05:47:26,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-21 05:47:26,544 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:47:26,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 110 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:47:26,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-21 05:47:26,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2023-12-21 05:47:26,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-21 05:47:26,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2023-12-21 05:47:26,553 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 28 [2023-12-21 05:47:26,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:47:26,554 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2023-12-21 05:47:26,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 05:47:26,554 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2023-12-21 05:47:26,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 05:47:26,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:47:26,555 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:47:26,572 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 05:47:26,759 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 05:47:26,760 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:47:26,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:47:26,760 INFO L85 PathProgramCache]: Analyzing trace with hash 878585613, now seen corresponding path program 1 times [2023-12-21 05:47:26,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:47:26,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28881186] [2023-12-21 05:47:26,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:26,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:47:26,776 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 05:47:26,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552824983] [2023-12-21 05:47:26,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:26,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:47:26,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:47:26,788 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 05:47:26,805 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 05:47:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:47:26,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 05:47:26,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:47:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 05:47:26,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:47:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 05:47:26,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:47:26,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28881186] [2023-12-21 05:47:26,970 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 05:47:26,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552824983] [2023-12-21 05:47:26,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552824983] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 05:47:26,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 05:47:26,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2023-12-21 05:47:26,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134629095] [2023-12-21 05:47:26,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:47:26,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 05:47:26,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:47:26,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 05:47:26,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-21 05:47:26,972 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 05:47:27,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:47:27,020 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2023-12-21 05:47:27,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 05:47:27,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2023-12-21 05:47:27,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:47:27,022 INFO L225 Difference]: With dead ends: 54 [2023-12-21 05:47:27,022 INFO L226 Difference]: Without dead ends: 52 [2023-12-21 05:47:27,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-21 05:47:27,022 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:47:27,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 92 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:47:27,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-21 05:47:27,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-12-21 05:47:27,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 states have internal predecessors, (34), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-21 05:47:27,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2023-12-21 05:47:27,031 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 35 [2023-12-21 05:47:27,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:47:27,031 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2023-12-21 05:47:27,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 05:47:27,032 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2023-12-21 05:47:27,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-21 05:47:27,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:47:27,033 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 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] [2023-12-21 05:47:27,040 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 05:47:27,237 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 05:47:27,238 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:47:27,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:47:27,238 INFO L85 PathProgramCache]: Analyzing trace with hash -170967411, now seen corresponding path program 1 times [2023-12-21 05:47:27,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:47:27,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715478828] [2023-12-21 05:47:27,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:27,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:47:27,251 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 05:47:27,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1993687141] [2023-12-21 05:47:27,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:27,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:47:27,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:47:27,252 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 05:47:27,261 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 05:47:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:47:27,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 05:47:27,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:47:27,333 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:47:27,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 05:47:27,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:47:27,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715478828] [2023-12-21 05:47:27,334 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 05:47:27,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993687141] [2023-12-21 05:47:27,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993687141] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:47:27,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:47:27,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 05:47:27,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477499894] [2023-12-21 05:47:27,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:47:27,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 05:47:27,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:47:27,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 05:47:27,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 05:47:27,335 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-21 05:47:27,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:47:27,420 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2023-12-21 05:47:27,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 05:47:27,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 45 [2023-12-21 05:47:27,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:47:27,421 INFO L225 Difference]: With dead ends: 58 [2023-12-21 05:47:27,421 INFO L226 Difference]: Without dead ends: 56 [2023-12-21 05:47:27,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-21 05:47:27,422 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 17 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:47:27,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 157 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:47:27,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-21 05:47:27,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-12-21 05:47:27,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 33 states have (on average 1.121212121212121) internal successors, (37), 34 states have internal predecessors, (37), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-21 05:47:27,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2023-12-21 05:47:27,431 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 45 [2023-12-21 05:47:27,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:47:27,431 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2023-12-21 05:47:27,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-21 05:47:27,431 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2023-12-21 05:47:27,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 05:47:27,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:47:27,432 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 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, 1] [2023-12-21 05:47:27,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-21 05:47:27,637 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 05:47:27,637 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:47:27,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:47:27,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1378270461, now seen corresponding path program 1 times [2023-12-21 05:47:27,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:47:27,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625409794] [2023-12-21 05:47:27,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:27,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:47:27,646 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 05:47:27,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321945786] [2023-12-21 05:47:27,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:27,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:47:27,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:47:27,647 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 05:47:27,650 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 05:47:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:47:27,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 05:47:27,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:47:27,763 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-21 05:47:27,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:47:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-21 05:47:27,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:47:27,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625409794] [2023-12-21 05:47:27,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 05:47:27,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321945786] [2023-12-21 05:47:27,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321945786] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:47:27,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 05:47:27,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-12-21 05:47:27,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954753085] [2023-12-21 05:47:27,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 05:47:27,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 05:47:27,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:47:27,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 05:47:27,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-21 05:47:27,844 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 05:47:27,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:47:27,923 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2023-12-21 05:47:27,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 05:47:27,924 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 51 [2023-12-21 05:47:27,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:47:27,924 INFO L225 Difference]: With dead ends: 62 [2023-12-21 05:47:27,924 INFO L226 Difference]: Without dead ends: 60 [2023-12-21 05:47:27,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-12-21 05:47:27,925 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 22 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:47:27,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 116 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:47:27,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-21 05:47:27,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-12-21 05:47:27,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-21 05:47:27,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2023-12-21 05:47:27,933 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 51 [2023-12-21 05:47:27,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:47:27,933 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2023-12-21 05:47:27,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 05:47:27,933 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2023-12-21 05:47:27,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 05:47:27,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:47:27,934 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 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 05:47:27,950 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 05:47:28,139 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 05:47:28,139 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:47:28,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:47:28,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1550111725, now seen corresponding path program 1 times [2023-12-21 05:47:28,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:47:28,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773216106] [2023-12-21 05:47:28,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:28,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:47:28,147 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 05:47:28,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180820618] [2023-12-21 05:47:28,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:28,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:47:28,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:47:28,178 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 05:47:28,179 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 05:47:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:47:28,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 05:47:28,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:47:28,387 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-21 05:47:28,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:47:28,528 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 05:47:28,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:47:28,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773216106] [2023-12-21 05:47:28,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 05:47:28,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180820618] [2023-12-21 05:47:28,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180820618] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 05:47:28,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 05:47:28,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2023-12-21 05:47:28,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380018917] [2023-12-21 05:47:28,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:47:28,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 05:47:28,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:47:28,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 05:47:28,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-12-21 05:47:28,531 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-21 05:47:28,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:47:28,698 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2023-12-21 05:47:28,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 05:47:28,701 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 58 [2023-12-21 05:47:28,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:47:28,701 INFO L225 Difference]: With dead ends: 60 [2023-12-21 05:47:28,701 INFO L226 Difference]: Without dead ends: 0 [2023-12-21 05:47:28,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-12-21 05:47:28,703 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 19 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:47:28,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 113 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:47:28,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-21 05:47:28,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-21 05:47:28,704 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 05:47:28,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-21 05:47:28,704 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2023-12-21 05:47:28,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:47:28,704 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-21 05:47:28,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-21 05:47:28,704 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-21 05:47:28,704 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-21 05:47:28,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 05:47:28,719 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 05:47:28,917 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 05:47:28,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-21 05:47:29,029 INFO L899 garLoopResultBuilder]: For program point L64(line 64) no Hoare annotation was computed. [2023-12-21 05:47:29,029 INFO L899 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2023-12-21 05:47:29,029 INFO L902 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2023-12-21 05:47:29,029 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2023-12-21 05:47:29,029 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|))) [2023-12-21 05:47:29,030 INFO L895 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|))) [2023-12-21 05:47:29,030 INFO L899 garLoopResultBuilder]: For program point L40(lines 38 62) no Hoare annotation was computed. [2023-12-21 05:47:29,030 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|))) [2023-12-21 05:47:29,030 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-21 05:47:29,030 INFO L902 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: true [2023-12-21 05:47:29,031 INFO L895 garLoopResultBuilder]: At program point L29-1(line 29) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 1)) [2023-12-21 05:47:29,031 INFO L899 garLoopResultBuilder]: For program point L50(lines 47 59) no Hoare annotation was computed. [2023-12-21 05:47:29,031 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-21 05:47:29,031 INFO L895 garLoopResultBuilder]: At program point L38-2(lines 38 62) the Hoare annotation is: (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|))) [2023-12-21 05:47:29,031 INFO L895 garLoopResultBuilder]: At program point L38-3(lines 38 62) the Hoare annotation is: (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|))) [2023-12-21 05:47:29,033 INFO L895 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (and (<= (* 2 |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|))) [2023-12-21 05:47:29,033 INFO L899 garLoopResultBuilder]: For program point L55-1(line 55) no Hoare annotation was computed. [2023-12-21 05:47:29,033 INFO L895 garLoopResultBuilder]: At program point L47-2(lines 47 59) the Hoare annotation is: (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|))) [2023-12-21 05:47:29,033 INFO L899 garLoopResultBuilder]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2023-12-21 05:47:29,034 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|))) [2023-12-21 05:47:29,034 INFO L895 garLoopResultBuilder]: At program point L39-1(line 39) the Hoare annotation is: (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|))) [2023-12-21 05:47:29,034 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-12-21 05:47:29,034 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2023-12-21 05:47:29,034 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 13) the Hoare annotation is: true [2023-12-21 05:47:29,034 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2023-12-21 05:47:29,034 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-12-21 05:47:29,034 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-12-21 05:47:29,034 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-12-21 05:47:29,034 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-12-21 05:47:29,034 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-12-21 05:47:29,034 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-12-21 05:47:29,037 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:47:29,038 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 05:47:29,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 05:47:29 BoogieIcfgContainer [2023-12-21 05:47:29,046 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 05:47:29,046 INFO L158 Benchmark]: Toolchain (without parser) took 4557.41ms. Allocated memory is still 356.5MB. Free memory was 304.9MB in the beginning and 201.6MB in the end (delta: 103.3MB). Peak memory consumption was 103.8MB. Max. memory is 8.0GB. [2023-12-21 05:47:29,046 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 225.4MB. Free memory is still 177.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 05:47:29,046 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.68ms. Allocated memory is still 356.5MB. Free memory was 304.4MB in the beginning and 293.4MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 05:47:29,047 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.04ms. Allocated memory is still 356.5MB. Free memory was 293.4MB in the beginning and 291.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 05:47:29,047 INFO L158 Benchmark]: Boogie Preprocessor took 24.82ms. Allocated memory is still 356.5MB. Free memory was 291.8MB in the beginning and 290.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 05:47:29,047 INFO L158 Benchmark]: RCFGBuilder took 270.43ms. Allocated memory is still 356.5MB. Free memory was 290.2MB in the beginning and 277.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-21 05:47:29,047 INFO L158 Benchmark]: TraceAbstraction took 4070.53ms. Allocated memory is still 356.5MB. Free memory was 276.6MB in the beginning and 201.6MB in the end (delta: 75.0MB). Peak memory consumption was 75.5MB. Max. memory is 8.0GB. [2023-12-21 05:47:29,049 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 225.4MB. Free memory is still 177.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 154.68ms. Allocated memory is still 356.5MB. Free memory was 304.4MB in the beginning and 293.4MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.04ms. Allocated memory is still 356.5MB. Free memory was 293.4MB in the beginning and 291.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.82ms. Allocated memory is still 356.5MB. Free memory was 291.8MB in the beginning and 290.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 270.43ms. Allocated memory is still 356.5MB. Free memory was 290.2MB in the beginning and 277.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4070.53ms. Allocated memory is still 356.5MB. Free memory was 276.6MB in the beginning and 201.6MB in the end (delta: 75.0MB). Peak memory consumption was 75.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: 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, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 7, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 118 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 97 mSDsluCounter, 781 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 584 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 403 IncrementalHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 197 mSDtfsCounter, 403 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 436 GetRequests, 363 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=6, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 38 PreInvPairs, 52 NumberOfFragments, 136 HoareAnnotationTreeSize, 38 FormulaSimplifications, 200 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FormulaSimplificationsInter, 117 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 286 NumberOfCodeBlocks, 286 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 424 ConstructedInterpolants, 0 QuantifiedInterpolants, 1142 SizeOfPredicates, 30 NumberOfNonLiveVariables, 683 ConjunctsInSsa, 125 ConjunctsInUnsatCore, 11 InterpolantComputations, 6 PerfectInterpolantSequences, 415/434 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: 47]: Loop Invariant Derived loop invariant: ((((y == 1) && (a == b)) && (1 <= r)) && (x == (q + r))) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((y == 1) && (a == b)) && (x == (q + r))) RESULT: Ultimate proved your program to be correct! [2023-12-21 05:47:29,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...