/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 21:30:01,700 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 21:30:01,771 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 21:30:01,777 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 21:30:01,778 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 21:30:01,793 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 21:30:01,793 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 21:30:01,793 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 21:30:01,794 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 21:30:01,794 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 21:30:01,794 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 21:30:01,794 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 21:30:01,795 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 21:30:01,795 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 21:30:01,795 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 21:30:01,796 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 21:30:01,796 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 21:30:01,796 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 21:30:01,796 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 21:30:01,796 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 21:30:01,797 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 21:30:01,797 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 21:30:01,797 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 21:30:01,797 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 21:30:01,798 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 21:30:01,798 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 21:30:01,798 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 21:30:01,798 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 21:30:01,799 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 21:30:01,799 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 21:30:01,799 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 21:30:01,799 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 21:30:01,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 21:30:01,800 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 21:30:01,800 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 21:30:01,800 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 21:30:01,800 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 21:30:01,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 21:30:01,801 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 21:30:01,801 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 21:30:01,801 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 21:30:01,802 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 21:30:01,802 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 21:30:01,802 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 21:30:02,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 21:30:02,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 21:30:02,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 21:30:02,044 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 21:30:02,045 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 21:30:02,045 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound20.c [2023-12-19 21:30:03,201 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 21:30:03,350 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 21:30:03,350 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound20.c [2023-12-19 21:30:03,355 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b039fd6c1/35162b4f22154bb9a2742917000f6eb6/FLAG807a9113f [2023-12-19 21:30:03,373 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b039fd6c1/35162b4f22154bb9a2742917000f6eb6 [2023-12-19 21:30:03,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 21:30:03,376 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 21:30:03,377 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 21:30:03,377 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 21:30:03,386 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 21:30:03,386 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 09:30:03" (1/1) ... [2023-12-19 21:30:03,387 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66721b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:30:03, skipping insertion in model container [2023-12-19 21:30:03,387 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 09:30:03" (1/1) ... [2023-12-19 21:30:03,405 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 21:30:03,527 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/prod4br-ll_unwindbound20.c[524,537] [2023-12-19 21:30:03,557 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 21:30:03,566 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 21:30:03,575 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/prod4br-ll_unwindbound20.c[524,537] [2023-12-19 21:30:03,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 21:30:03,603 INFO L206 MainTranslator]: Completed translation [2023-12-19 21:30:03,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:30:03 WrapperNode [2023-12-19 21:30:03,605 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 21:30:03,606 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 21:30:03,606 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 21:30:03,606 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 21:30:03,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:30:03" (1/1) ... [2023-12-19 21:30:03,622 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:30:03" (1/1) ... [2023-12-19 21:30:03,642 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2023-12-19 21:30:03,643 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 21:30:03,644 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 21:30:03,644 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 21:30:03,644 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 21:30:03,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:30:03" (1/1) ... [2023-12-19 21:30:03,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:30:03" (1/1) ... [2023-12-19 21:30:03,654 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:30:03" (1/1) ... [2023-12-19 21:30:03,667 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 21:30:03,667 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:30:03" (1/1) ... [2023-12-19 21:30:03,668 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:30:03" (1/1) ... [2023-12-19 21:30:03,677 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:30:03" (1/1) ... [2023-12-19 21:30:03,680 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:30:03" (1/1) ... [2023-12-19 21:30:03,683 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:30:03" (1/1) ... [2023-12-19 21:30:03,684 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:30:03" (1/1) ... [2023-12-19 21:30:03,687 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 21:30:03,688 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 21:30:03,688 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 21:30:03,688 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 21:30:03,688 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:30:03" (1/1) ... [2023-12-19 21:30:03,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 21:30:03,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:30:03,709 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 21:30:03,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 21:30:03,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 21:30:03,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 21:30:03,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 21:30:03,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 21:30:03,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-19 21:30:03,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-19 21:30:03,782 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 21:30:03,784 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 21:30:03,908 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 21:30:03,925 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 21:30:03,926 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 21:30:03,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 09:30:03 BoogieIcfgContainer [2023-12-19 21:30:03,926 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 21:30:03,928 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 21:30:03,928 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 21:30:03,930 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 21:30:03,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 09:30:03" (1/3) ... [2023-12-19 21:30:03,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329efaaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 09:30:03, skipping insertion in model container [2023-12-19 21:30:03,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:30:03" (2/3) ... [2023-12-19 21:30:03,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329efaaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 09:30:03, skipping insertion in model container [2023-12-19 21:30:03,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 09:30:03" (3/3) ... [2023-12-19 21:30:03,932 INFO L112 eAbstractionObserver]: Analyzing ICFG prod4br-ll_unwindbound20.c [2023-12-19 21:30:03,946 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 21:30:03,946 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 21:30:03,979 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 21:30:03,984 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;@240679ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 21:30:03,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 21:30:03,988 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 21:30:03,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-19 21:30:03,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:30:03,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:30:03,994 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:30:03,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:30:03,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1370743400, now seen corresponding path program 1 times [2023-12-19 21:30:04,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:30:04,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923712829] [2023-12-19 21:30:04,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:30:04,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:30:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:30:04,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:30:04,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923712829] [2023-12-19 21:30:04,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 21:30:04,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107937315] [2023-12-19 21:30:04,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:30:04,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:30:04,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:30:04,149 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 21:30:04,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 21:30:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:30:04,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 21:30:04,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:30:04,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 21:30:04,233 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:30:04,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107937315] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:30:04,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 21:30:04,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 21:30:04,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79398449] [2023-12-19 21:30:04,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:30:04,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 21:30:04,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:30:04,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 21:30:04,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 21:30:04,270 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 21:30:04,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:30:04,310 INFO L93 Difference]: Finished difference Result 38 states and 58 transitions. [2023-12-19 21:30:04,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 21:30:04,324 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-19 21:30:04,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:30:04,328 INFO L225 Difference]: With dead ends: 38 [2023-12-19 21:30:04,329 INFO L226 Difference]: Without dead ends: 18 [2023-12-19 21:30:04,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 21:30:04,332 INFO L413 NwaCegarLoop]: 24 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, 24 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 21:30:04,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 21:30:04,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-19 21:30:04,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-19 21:30:04,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 21:30:04,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2023-12-19 21:30:04,362 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 8 [2023-12-19 21:30:04,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:30:04,362 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2023-12-19 21:30:04,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 21:30:04,363 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2023-12-19 21:30:04,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-19 21:30:04,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:30:04,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:30:04,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 21:30:04,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 21:30:04,572 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:30:04,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:30:04,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1225985538, now seen corresponding path program 1 times [2023-12-19 21:30:04,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:30:04,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464869731] [2023-12-19 21:30:04,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:30:04,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:30:04,592 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 21:30:04,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402469769] [2023-12-19 21:30:04,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:30:04,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:30:04,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:30:04,596 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 21:30:04,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 21:30:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:30:04,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 21:30:04,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:30:04,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 21:30:04,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:30:04,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:30:04,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464869731] [2023-12-19 21:30:04,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 21:30:04,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402469769] [2023-12-19 21:30:04,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402469769] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:30:04,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 21:30:04,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 21:30:04,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265736233] [2023-12-19 21:30:04,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:30:04,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 21:30:04,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:30:04,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 21:30:04,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 21:30:04,663 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 21:30:04,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:30:04,674 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2023-12-19 21:30:04,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 21:30:04,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-19 21:30:04,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:30:04,675 INFO L225 Difference]: With dead ends: 28 [2023-12-19 21:30:04,675 INFO L226 Difference]: Without dead ends: 20 [2023-12-19 21:30:04,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 21:30:04,676 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 21:30:04,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 21:30:04,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-19 21:30:04,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-12-19 21:30:04,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 21:30:04,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2023-12-19 21:30:04,680 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 9 [2023-12-19 21:30:04,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:30:04,680 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2023-12-19 21:30:04,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 21:30:04,681 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2023-12-19 21:30:04,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-19 21:30:04,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:30:04,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:30:04,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 21:30:04,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 21:30:04,886 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:30:04,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:30:04,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1224198078, now seen corresponding path program 1 times [2023-12-19 21:30:04,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:30:04,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796098936] [2023-12-19 21:30:04,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:30:04,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:30:04,909 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 21:30:04,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1298604436] [2023-12-19 21:30:04,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:30:04,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:30:04,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:30:04,914 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 21:30:04,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 21:30:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:30:04,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 21:30:04,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:30:05,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 21:30:05,067 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:30:05,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:30:05,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796098936] [2023-12-19 21:30:05,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 21:30:05,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298604436] [2023-12-19 21:30:05,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298604436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:30:05,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 21:30:05,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 21:30:05,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840437991] [2023-12-19 21:30:05,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:30:05,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 21:30:05,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:30:05,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 21:30:05,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 21:30:05,069 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 21:30:05,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:30:05,115 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2023-12-19 21:30:05,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 21:30:05,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-19 21:30:05,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:30:05,116 INFO L225 Difference]: With dead ends: 33 [2023-12-19 21:30:05,116 INFO L226 Difference]: Without dead ends: 31 [2023-12-19 21:30:05,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 21:30:05,117 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 21:30:05,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 45 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 21:30:05,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-19 21:30:05,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2023-12-19 21:30:05,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 20 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 21:30:05,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2023-12-19 21:30:05,123 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 9 [2023-12-19 21:30:05,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:30:05,123 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-12-19 21:30:05,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 21:30:05,123 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2023-12-19 21:30:05,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-19 21:30:05,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:30:05,124 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:30:05,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 21:30:05,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:30:05,329 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:30:05,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:30:05,330 INFO L85 PathProgramCache]: Analyzing trace with hash -836644593, now seen corresponding path program 1 times [2023-12-19 21:30:05,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:30:05,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013046658] [2023-12-19 21:30:05,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:30:05,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:30:05,342 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 21:30:05,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1356740887] [2023-12-19 21:30:05,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:30:05,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:30:05,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:30:05,354 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 21:30:05,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 21:30:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:30:05,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 21:30:05,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:30:05,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 21:30:05,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 21:30:05,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 21:30:05,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:30:05,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013046658] [2023-12-19 21:30:05,912 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 21:30:05,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356740887] [2023-12-19 21:30:05,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356740887] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 21:30:05,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 21:30:05,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 15 [2023-12-19 21:30:05,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608887049] [2023-12-19 21:30:05,913 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 21:30:05,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 21:30:05,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:30:05,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 21:30:05,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-12-19 21:30:05,917 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 21:30:06,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:30:06,277 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2023-12-19 21:30:06,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 21:30:06,278 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2023-12-19 21:30:06,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:30:06,280 INFO L225 Difference]: With dead ends: 46 [2023-12-19 21:30:06,280 INFO L226 Difference]: Without dead ends: 44 [2023-12-19 21:30:06,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2023-12-19 21:30:06,281 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 52 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 21:30:06,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 83 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 21:30:06,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-19 21:30:06,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 30. [2023-12-19 21:30:06,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 states have internal predecessors, (27), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-19 21:30:06,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2023-12-19 21:30:06,291 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 15 [2023-12-19 21:30:06,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:30:06,291 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2023-12-19 21:30:06,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 21:30:06,292 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2023-12-19 21:30:06,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-19 21:30:06,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:30:06,292 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:30:06,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 21:30:06,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:30:06,497 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:30:06,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:30:06,498 INFO L85 PathProgramCache]: Analyzing trace with hash -276751944, now seen corresponding path program 1 times [2023-12-19 21:30:06,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:30:06,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706539685] [2023-12-19 21:30:06,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:30:06,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:30:06,508 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 21:30:06,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [893167594] [2023-12-19 21:30:06,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:30:06,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:30:06,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:30:06,510 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 21:30:06,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 21:30:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:30:06,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 21:30:06,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:30:06,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 21:30:06,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 21:30:06,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 21:30:06,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:30:06,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706539685] [2023-12-19 21:30:06,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 21:30:06,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893167594] [2023-12-19 21:30:06,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893167594] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 21:30:06,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 21:30:06,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-12-19 21:30:06,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477027085] [2023-12-19 21:30:06,628 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 21:30:06,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 21:30:06,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:30:06,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 21:30:06,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-19 21:30:06,642 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 21:30:06,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:30:06,761 INFO L93 Difference]: Finished difference Result 94 states and 114 transitions. [2023-12-19 21:30:06,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 21:30:06,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-12-19 21:30:06,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:30:06,765 INFO L225 Difference]: With dead ends: 94 [2023-12-19 21:30:06,765 INFO L226 Difference]: Without dead ends: 84 [2023-12-19 21:30:06,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 21:30:06,767 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 51 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:30:06,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 128 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:30:06,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-19 21:30:06,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 78. [2023-12-19 21:30:06,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 56 states have (on average 1.3571428571428572) internal successors, (76), 60 states have internal predecessors, (76), 13 states have call successors, (13), 9 states have call predecessors, (13), 8 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-19 21:30:06,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 98 transitions. [2023-12-19 21:30:06,799 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 98 transitions. Word has length 18 [2023-12-19 21:30:06,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:30:06,799 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 98 transitions. [2023-12-19 21:30:06,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 21:30:06,799 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 98 transitions. [2023-12-19 21:30:06,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-19 21:30:06,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:30:06,801 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:30:06,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 21:30:07,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:30:07,006 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:30:07,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:30:07,007 INFO L85 PathProgramCache]: Analyzing trace with hash -274964484, now seen corresponding path program 1 times [2023-12-19 21:30:07,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:30:07,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853312014] [2023-12-19 21:30:07,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:30:07,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:30:07,014 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 21:30:07,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028213044] [2023-12-19 21:30:07,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:30:07,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:30:07,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:30:07,015 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 21:30:07,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 21:30:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:30:07,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-19 21:30:07,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:30:07,267 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 21:30:07,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 21:30:07,879 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 21:30:07,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:30:07,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853312014] [2023-12-19 21:30:07,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 21:30:07,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028213044] [2023-12-19 21:30:07,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028213044] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 21:30:07,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 21:30:07,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-19 21:30:07,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283848106] [2023-12-19 21:30:07,880 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 21:30:07,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 21:30:07,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:30:07,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 21:30:07,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-19 21:30:07,881 INFO L87 Difference]: Start difference. First operand 78 states and 98 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 12 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 21:30:08,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:30:08,908 INFO L93 Difference]: Finished difference Result 119 states and 156 transitions. [2023-12-19 21:30:08,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 21:30:08,909 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 12 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-12-19 21:30:08,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:30:08,910 INFO L225 Difference]: With dead ends: 119 [2023-12-19 21:30:08,910 INFO L226 Difference]: Without dead ends: 113 [2023-12-19 21:30:08,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-12-19 21:30:08,911 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 124 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 21:30:08,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 123 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 21:30:08,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-19 21:30:08,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 70. [2023-12-19 21:30:08,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 55 states have internal predecessors, (71), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-19 21:30:08,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2023-12-19 21:30:08,941 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 18 [2023-12-19 21:30:08,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:30:08,941 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2023-12-19 21:30:08,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 12 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 21:30:08,942 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2023-12-19 21:30:08,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-19 21:30:08,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:30:08,942 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:30:08,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-19 21:30:09,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:30:09,150 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:30:09,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:30:09,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1314151899, now seen corresponding path program 1 times [2023-12-19 21:30:09,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:30:09,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850949171] [2023-12-19 21:30:09,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:30:09,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:30:09,167 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 21:30:09,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [855455870] [2023-12-19 21:30:09,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:30:09,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:30:09,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:30:09,169 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 21:30:09,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 21:30:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:30:09,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 21:30:09,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:30:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 21:30:09,245 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:30:09,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:30:09,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850949171] [2023-12-19 21:30:09,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 21:30:09,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855455870] [2023-12-19 21:30:09,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855455870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:30:09,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 21:30:09,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 21:30:09,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475202048] [2023-12-19 21:30:09,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:30:09,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 21:30:09,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:30:09,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 21:30:09,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 21:30:09,247 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 21:30:09,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:30:09,331 INFO L93 Difference]: Finished difference Result 107 states and 142 transitions. [2023-12-19 21:30:09,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 21:30:09,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2023-12-19 21:30:09,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:30:09,334 INFO L225 Difference]: With dead ends: 107 [2023-12-19 21:30:09,334 INFO L226 Difference]: Without dead ends: 95 [2023-12-19 21:30:09,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-19 21:30:09,335 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 34 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 21:30:09,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 80 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 21:30:09,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-19 21:30:09,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2023-12-19 21:30:09,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.3428571428571427) internal successors, (94), 72 states have internal predecessors, (94), 12 states have call successors, (12), 8 states have call predecessors, (12), 7 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-19 21:30:09,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 116 transitions. [2023-12-19 21:30:09,370 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 116 transitions. Word has length 20 [2023-12-19 21:30:09,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:30:09,371 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 116 transitions. [2023-12-19 21:30:09,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 21:30:09,371 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 116 transitions. [2023-12-19 21:30:09,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-19 21:30:09,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:30:09,372 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:30:09,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 21:30:09,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:30:09,577 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:30:09,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:30:09,578 INFO L85 PathProgramCache]: Analyzing trace with hash 247774438, now seen corresponding path program 1 times [2023-12-19 21:30:09,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:30:09,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207198767] [2023-12-19 21:30:09,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:30:09,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:30:09,597 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 21:30:09,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1249347929] [2023-12-19 21:30:09,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:30:09,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:30:09,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:30:09,602 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 21:30:09,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 21:30:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:30:09,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 21:30:09,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:30:09,666 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 21:30:09,666 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:30:09,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:30:09,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207198767] [2023-12-19 21:30:09,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 21:30:09,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249347929] [2023-12-19 21:30:09,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249347929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:30:09,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 21:30:09,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 21:30:09,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764155648] [2023-12-19 21:30:09,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:30:09,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 21:30:09,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:30:09,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 21:30:09,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 21:30:09,667 INFO L87 Difference]: Start difference. First operand 90 states and 116 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 21:30:09,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:30:09,733 INFO L93 Difference]: Finished difference Result 132 states and 171 transitions. [2023-12-19 21:30:09,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 21:30:09,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2023-12-19 21:30:09,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:30:09,735 INFO L225 Difference]: With dead ends: 132 [2023-12-19 21:30:09,735 INFO L226 Difference]: Without dead ends: 120 [2023-12-19 21:30:09,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 21:30:09,736 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 21:30:09,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 84 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 21:30:09,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-19 21:30:09,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 104. [2023-12-19 21:30:09,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 81 states have (on average 1.308641975308642) internal successors, (106), 83 states have internal predecessors, (106), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 21:30:09,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 134 transitions. [2023-12-19 21:30:09,762 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 134 transitions. Word has length 31 [2023-12-19 21:30:09,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:30:09,763 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 134 transitions. [2023-12-19 21:30:09,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 21:30:09,763 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 134 transitions. [2023-12-19 21:30:09,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-19 21:30:09,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:30:09,764 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:30:09,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-19 21:30:09,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 21:30:09,969 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:30:09,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:30:09,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1746370268, now seen corresponding path program 1 times [2023-12-19 21:30:09,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:30:09,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651497030] [2023-12-19 21:30:09,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:30:09,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:30:09,975 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 21:30:09,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [282517188] [2023-12-19 21:30:09,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:30:09,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:30:09,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:30:09,976 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 21:30:09,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 21:30:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:30:10,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 21:30:10,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:30:10,120 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 21:30:10,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 21:30:10,159 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-19 21:30:10,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:30:10,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651497030] [2023-12-19 21:30:10,160 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 21:30:10,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282517188] [2023-12-19 21:30:10,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282517188] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 21:30:10,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:30:10,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 14 [2023-12-19 21:30:10,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570331071] [2023-12-19 21:30:10,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:30:10,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 21:30:10,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:30:10,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 21:30:10,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-19 21:30:10,161 INFO L87 Difference]: Start difference. First operand 104 states and 134 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 21:30:10,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:30:10,323 INFO L93 Difference]: Finished difference Result 111 states and 140 transitions. [2023-12-19 21:30:10,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 21:30:10,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2023-12-19 21:30:10,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:30:10,324 INFO L225 Difference]: With dead ends: 111 [2023-12-19 21:30:10,324 INFO L226 Difference]: Without dead ends: 91 [2023-12-19 21:30:10,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-19 21:30:10,325 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:30:10,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 86 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:30:10,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-19 21:30:10,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 57. [2023-12-19 21:30:10,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 46 states have internal predecessors, (59), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-19 21:30:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2023-12-19 21:30:10,335 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 31 [2023-12-19 21:30:10,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:30:10,335 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2023-12-19 21:30:10,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 21:30:10,335 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2023-12-19 21:30:10,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-19 21:30:10,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:30:10,336 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:30:10,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 21:30:10,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:30:10,541 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:30:10,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:30:10,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1003273090, now seen corresponding path program 2 times [2023-12-19 21:30:10,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:30:10,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331563948] [2023-12-19 21:30:10,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:30:10,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:30:10,548 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 21:30:10,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360532725] [2023-12-19 21:30:10,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 21:30:10,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:30:10,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:30:10,549 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 21:30:10,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 21:30:10,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 21:30:10,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 21:30:10,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 21:30:10,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:30:10,656 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 21:30:10,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 21:30:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 21:30:10,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:30:10,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331563948] [2023-12-19 21:30:10,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 21:30:10,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360532725] [2023-12-19 21:30:10,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360532725] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 21:30:10,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 21:30:10,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-19 21:30:10,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949101311] [2023-12-19 21:30:10,732 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 21:30:10,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 21:30:10,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:30:10,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 21:30:10,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-12-19 21:30:10,734 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 21:30:10,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:30:10,852 INFO L93 Difference]: Finished difference Result 131 states and 168 transitions. [2023-12-19 21:30:10,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 21:30:10,852 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 45 [2023-12-19 21:30:10,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:30:10,854 INFO L225 Difference]: With dead ends: 131 [2023-12-19 21:30:10,854 INFO L226 Difference]: Without dead ends: 123 [2023-12-19 21:30:10,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2023-12-19 21:30:10,855 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 167 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 21:30:10,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 153 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 21:30:10,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-19 21:30:10,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2023-12-19 21:30:10,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 99 states have (on average 1.3232323232323233) internal successors, (131), 100 states have internal predecessors, (131), 12 states have call successors, (12), 11 states have call predecessors, (12), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-19 21:30:10,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 154 transitions. [2023-12-19 21:30:10,868 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 154 transitions. Word has length 45 [2023-12-19 21:30:10,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:30:10,869 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 154 transitions. [2023-12-19 21:30:10,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 21:30:10,869 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 154 transitions. [2023-12-19 21:30:10,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-19 21:30:10,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:30:10,874 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:30:10,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 21:30:11,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 21:30:11,080 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:30:11,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:30:11,080 INFO L85 PathProgramCache]: Analyzing trace with hash 93005886, now seen corresponding path program 3 times [2023-12-19 21:30:11,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:30:11,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909782484] [2023-12-19 21:30:11,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:30:11,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:30:11,089 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 21:30:11,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956069970] [2023-12-19 21:30:11,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 21:30:11,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:30:11,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:30:11,091 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 21:30:11,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 21:30:11,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-12-19 21:30:11,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 21:30:11,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 21:30:11,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:30:11,500 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 20 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 21:30:11,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 21:30:11,687 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 20 proven. 245 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-19 21:30:11,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:30:11,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909782484] [2023-12-19 21:30:11,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 21:30:11,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956069970] [2023-12-19 21:30:11,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956069970] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 21:30:11,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 21:30:11,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 24 [2023-12-19 21:30:11,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810334642] [2023-12-19 21:30:11,688 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 21:30:11,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-19 21:30:11,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:30:11,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-19 21:30:11,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=316, Unknown=0, NotChecked=0, Total=552 [2023-12-19 21:30:11,689 INFO L87 Difference]: Start difference. First operand 123 states and 154 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 20 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2023-12-19 21:30:12,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:30:12,039 INFO L93 Difference]: Finished difference Result 241 states and 312 transitions. [2023-12-19 21:30:12,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-19 21:30:12,040 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 20 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) Word has length 99 [2023-12-19 21:30:12,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:30:12,045 INFO L225 Difference]: With dead ends: 241 [2023-12-19 21:30:12,045 INFO L226 Difference]: Without dead ends: 233 [2023-12-19 21:30:12,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 172 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=665, Invalid=1141, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 21:30:12,046 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 332 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 21:30:12,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 284 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 21:30:12,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-12-19 21:30:12,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2023-12-19 21:30:12,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 189 states have (on average 1.3280423280423281) internal successors, (251), 190 states have internal predecessors, (251), 22 states have call successors, (22), 21 states have call predecessors, (22), 21 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-19 21:30:12,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 294 transitions. [2023-12-19 21:30:12,072 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 294 transitions. Word has length 99 [2023-12-19 21:30:12,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:30:12,073 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 294 transitions. [2023-12-19 21:30:12,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 20 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2023-12-19 21:30:12,073 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 294 transitions. [2023-12-19 21:30:12,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-19 21:30:12,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:30:12,078 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:30:12,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-19 21:30:12,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 21:30:12,284 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:30:12,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:30:12,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1104933250, now seen corresponding path program 4 times [2023-12-19 21:30:12,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:30:12,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434501106] [2023-12-19 21:30:12,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:30:12,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:30:12,312 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 21:30:12,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322118193] [2023-12-19 21:30:12,312 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 21:30:12,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:30:12,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:30:12,333 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 21:30:12,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 21:30:12,608 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 21:30:12,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-12-19 21:30:12,608 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-19 21:30:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-19 21:30:12,776 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-19 21:30:12,777 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-19 21:30:12,777 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 21:30:12,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 21:30:12,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 21:30:12,981 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:30:12,983 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 21:30:13,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 09:30:13 BoogieIcfgContainer [2023-12-19 21:30:13,038 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 21:30:13,038 INFO L158 Benchmark]: Toolchain (without parser) took 9662.10ms. Allocated memory was 273.7MB in the beginning and 329.3MB in the end (delta: 55.6MB). Free memory was 227.2MB in the beginning and 226.1MB in the end (delta: 1.1MB). Peak memory consumption was 57.7MB. Max. memory is 8.0GB. [2023-12-19 21:30:13,038 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 168.8MB. Free memory was 122.4MB in the beginning and 122.3MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 21:30:13,038 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.28ms. Allocated memory is still 273.7MB. Free memory was 226.8MB in the beginning and 215.7MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 21:30:13,039 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.90ms. Allocated memory is still 273.7MB. Free memory was 215.7MB in the beginning and 213.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 21:30:13,039 INFO L158 Benchmark]: Boogie Preprocessor took 43.12ms. Allocated memory is still 273.7MB. Free memory was 213.9MB in the beginning and 212.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 21:30:13,039 INFO L158 Benchmark]: RCFGBuilder took 238.49ms. Allocated memory is still 273.7MB. Free memory was 212.2MB in the beginning and 199.9MB in the end (delta: 12.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-19 21:30:13,039 INFO L158 Benchmark]: TraceAbstraction took 9109.78ms. Allocated memory was 273.7MB in the beginning and 329.3MB in the end (delta: 55.6MB). Free memory was 198.9MB in the beginning and 226.1MB in the end (delta: -27.1MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2023-12-19 21:30:13,040 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 168.8MB. Free memory was 122.4MB in the beginning and 122.3MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 228.28ms. Allocated memory is still 273.7MB. Free memory was 226.8MB in the beginning and 215.7MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.90ms. Allocated memory is still 273.7MB. Free memory was 215.7MB in the beginning and 213.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.12ms. Allocated memory is still 273.7MB. Free memory was 213.9MB in the beginning and 212.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 238.49ms. Allocated memory is still 273.7MB. Free memory was 212.2MB in the beginning and 199.9MB in the end (delta: 12.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 9109.78ms. Allocated memory was 273.7MB in the beginning and 329.3MB in the end (delta: 55.6MB). Free memory was 198.9MB in the beginning and 226.1MB in the end (delta: -27.1MB). Peak memory consumption was 29.4MB. 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 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; [L21] int x, y; [L22] long long a, b, p, q; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(y >= 1) [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L26] RET assume_abort_if_not(y >= 1) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 VAL [a=2097152, b=1048576, counter=0, p=1, q=0, x=2097152, y=1048576] [L33] EXPR counter++ VAL [a=2097152, b=1048576, counter=1, p=1, q=0, x=2097152, y=1048576] [L33] COND TRUE counter++<20 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=1] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=2097152, b=1048576, counter=1, p=1, q=0, x=2097152, y=1048576] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=2097152, b=1048576, counter=1, p=1, q=0, x=2097152, y=1048576] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=1048576, b=524288, counter=1, p=4, q=0, x=2097152, y=1048576] [L33] EXPR counter++ VAL [a=1048576, b=524288, counter=2, p=4, q=0, x=2097152, y=1048576] [L33] COND TRUE counter++<20 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=2] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=1048576, b=524288, counter=2, p=4, q=0, x=2097152, y=1048576] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=1048576, b=524288, counter=2, p=4, q=0, x=2097152, y=1048576] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=524288, b=262144, counter=2, p=16, q=0, x=2097152, y=1048576] [L33] EXPR counter++ VAL [a=524288, b=262144, counter=3, p=16, q=0, x=2097152, y=1048576] [L33] COND TRUE counter++<20 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=3] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=524288, b=262144, counter=3, p=16, q=0, x=2097152, y=1048576] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=524288, b=262144, counter=3, p=16, q=0, x=2097152, y=1048576] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=262144, b=131072, counter=3, p=64, q=0, x=2097152, y=1048576] [L33] EXPR counter++ VAL [a=262144, b=131072, counter=4, p=64, q=0, x=2097152, y=1048576] [L33] COND TRUE counter++<20 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=4] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=262144, b=131072, counter=4, p=64, q=0, x=2097152, y=1048576] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=262144, b=131072, counter=4, p=64, q=0, x=2097152, y=1048576] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=131072, b=65536, counter=4, p=256, q=0, x=2097152, y=1048576] [L33] EXPR counter++ VAL [a=131072, b=65536, counter=5, p=256, q=0, x=2097152, y=1048576] [L33] COND TRUE counter++<20 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=5] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=131072, b=65536, counter=5, p=256, q=0, x=2097152, y=1048576] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=131072, b=65536, counter=5, p=256, q=0, x=2097152, y=1048576] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=65536, b=32768, counter=5, p=1024, q=0, x=2097152, y=1048576] [L33] EXPR counter++ VAL [a=65536, b=32768, counter=6, p=1024, q=0, x=2097152, y=1048576] [L33] COND TRUE counter++<20 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=6] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=65536, b=32768, counter=6, p=1024, q=0, x=2097152, y=1048576] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=65536, b=32768, counter=6, p=1024, q=0, x=2097152, y=1048576] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=32768, b=16384, counter=6, p=4096, q=0, x=2097152, y=1048576] [L33] EXPR counter++ VAL [a=32768, b=16384, counter=7, p=4096, q=0, x=2097152, y=1048576] [L33] COND TRUE counter++<20 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=7] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=32768, b=16384, counter=7, p=4096, q=0, x=2097152, y=1048576] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=32768, b=16384, counter=7, p=4096, q=0, x=2097152, y=1048576] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=16384, b=8192, counter=7, p=16384, q=0, x=2097152, y=1048576] [L33] EXPR counter++ VAL [a=16384, b=8192, counter=8, p=16384, q=0, x=2097152, y=1048576] [L33] COND TRUE counter++<20 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=8] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=16384, b=8192, counter=8, p=16384, q=0, x=2097152, y=1048576] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=16384, b=8192, counter=8, p=16384, q=0, x=2097152, y=1048576] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=8192, b=4096, counter=8, p=65536, q=0, x=2097152, y=1048576] [L33] EXPR counter++ VAL [a=8192, b=4096, counter=9, p=65536, q=0, x=2097152, y=1048576] [L33] COND TRUE counter++<20 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=9] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=8192, b=4096, counter=9, p=65536, q=0, x=2097152, y=1048576] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=8192, b=4096, counter=9, p=65536, q=0, x=2097152, y=1048576] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=4096, b=2048, counter=9, p=262144, q=0, x=2097152, y=1048576] [L33] EXPR counter++ VAL [a=4096, b=2048, counter=10, p=262144, q=0, x=2097152, y=1048576] [L33] COND TRUE counter++<20 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=10] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=4096, b=2048, counter=10, p=262144, q=0, x=2097152, y=1048576] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=4096, b=2048, counter=10, p=262144, q=0, x=2097152, y=1048576] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=2048, b=1024, counter=10, p=1048576, q=0, x=2097152, y=1048576] [L33] EXPR counter++ VAL [a=2048, b=1024, counter=11, p=1048576, q=0, x=2097152, y=1048576] [L33] COND TRUE counter++<20 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=11] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=11] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=2048, b=1024, counter=11, p=1048576, q=0, x=2097152, y=1048576] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=2048, b=1024, counter=11, p=1048576, q=0, x=2097152, y=1048576] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=1024, b=512, counter=11, p=4194304, q=0, x=2097152, y=1048576] [L33] EXPR counter++ VAL [a=1024, b=512, counter=12, p=4194304, q=0, x=2097152, y=1048576] [L33] COND TRUE counter++<20 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=12] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=12] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=1024, b=512, counter=12, p=4194304, q=0, x=2097152, y=1048576] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=1024, b=512, counter=12, p=4194304, q=0, x=2097152, y=1048576] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=512, b=256, counter=12, p=16777216, q=0, x=2097152, y=1048576] [L33] EXPR counter++ VAL [a=512, b=256, counter=13, p=16777216, q=0, x=2097152, y=1048576] [L33] COND TRUE counter++<20 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=13] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=13] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=512, b=256, counter=13, p=16777216, q=0, x=2097152, y=1048576] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=512, b=256, counter=13, p=16777216, q=0, x=2097152, y=1048576] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=256, b=128, counter=13, p=67108864, q=0, x=2097152, y=1048576] [L33] EXPR counter++ VAL [a=256, b=128, counter=14, p=67108864, q=0, x=2097152, y=1048576] [L33] COND TRUE counter++<20 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=14] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=14] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=256, b=128, counter=14, p=67108864, q=0, x=2097152, y=1048576] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=256, b=128, counter=14, p=67108864, q=0, x=2097152, y=1048576] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=128, b=64, counter=14, p=268435456, q=0, x=2097152, y=1048576] [L33] EXPR counter++ VAL [a=128, b=64, counter=15, p=268435456, q=0, x=2097152, y=1048576] [L33] COND TRUE counter++<20 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=15] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=15] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=128, b=64, counter=15, p=268435456, q=0, x=2097152, y=1048576] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=128, b=64, counter=15, p=268435456, q=0, x=2097152, y=1048576] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=64, b=32, counter=15, p=1073741824, q=0, x=2097152, y=1048576] [L33] EXPR counter++ VAL [a=64, b=32, counter=16, p=1073741824, q=0, x=2097152, y=1048576] [L33] COND TRUE counter++<20 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=16] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=16] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=64, b=32, counter=16, p=1073741824, q=0, x=2097152, y=1048576] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=64, b=32, counter=16, p=1073741824, q=0, x=2097152, y=1048576] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=32, b=16, counter=16, p=4294967296, q=0, x=2097152, y=1048576] [L33] EXPR counter++ VAL [a=32, b=16, counter=17, p=4294967296, q=0, x=2097152, y=1048576] [L33] COND TRUE counter++<20 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=17] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=17] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=32, b=16, counter=17, p=4294967296, q=0, x=2097152, y=1048576] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=32, b=16, counter=17, p=4294967296, q=0, x=2097152, y=1048576] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=16, b=8, counter=17, p=17179869184, q=0, x=2097152, y=1048576] [L33] EXPR counter++ VAL [a=16, b=8, counter=18, p=17179869184, q=0, x=2097152, y=1048576] [L33] COND TRUE counter++<20 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=18] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=18] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=16, b=8, counter=18, p=17179869184, q=0, x=2097152, y=1048576] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=16, b=8, counter=18, p=17179869184, q=0, x=2097152, y=1048576] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=8, b=4, counter=18, p=68719476736, q=0, x=2097152, y=1048576] [L33] EXPR counter++ VAL [a=8, b=4, counter=19, p=68719476736, q=0, x=2097152, y=1048576] [L33] COND TRUE counter++<20 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=19] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=19] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=8, b=4, counter=19, p=68719476736, q=0, x=2097152, y=1048576] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=8, b=4, counter=19, p=68719476736, q=0, x=2097152, y=1048576] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=4, b=2, counter=19, p=274877906944, q=0, x=2097152, y=1048576] [L33] EXPR counter++ VAL [a=4, b=2, counter=20, p=274877906944, q=0, x=2097152, y=1048576] [L33] COND TRUE counter++<20 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=20] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=20] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=4, b=2, counter=20, p=274877906944, q=0, x=2097152, y=1048576] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=4, b=2, counter=20, p=274877906944, q=0, x=2097152, y=1048576] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=2, b=1, counter=20, p=1099511627776, q=0, x=2097152, y=1048576] [L33] EXPR counter++ VAL [a=2, b=1, counter=21, p=1099511627776, q=0, x=2097152, y=1048576] [L33] COND FALSE !(counter++<20) [L56] CALL __VERIFIER_assert(q == (long long) x * y) VAL [\old(cond)=0, counter=21] [L12] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=21] [L14] reach_error() VAL [\old(cond)=0, cond=0, counter=21] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.0s, OverallIterations: 12, TraceHistogramMax: 21, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 790 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 779 mSDsluCounter, 1150 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 936 mSDsCounter, 104 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 735 IncrementalHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 104 mSolverCounterUnsat, 214 mSDtfsCounter, 735 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 560 GetRequests, 419 SyntacticMatches, 2 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=233occurred in iteration=11, InterpolantAutomatonStates: 131, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 124 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 500 NumberOfCodeBlocks, 500 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 512 ConstructedInterpolants, 3 QuantifiedInterpolants, 1921 SizeOfPredicates, 46 NumberOfNonLiveVariables, 1124 ConjunctsInSsa, 144 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 333/1126 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-12-19 21:30:13,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...