/usr/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 -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound50.c


--------------------------------------------------------------------------------


This is Ultimate 0.2.3-dev-f954360
[2023-03-31 00:36:58,573 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2023-03-31 00:36:58,639 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-03-31 00:36:58,640 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2023-03-31 00:36:58,658 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-03-31 00:36:58,658 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-03-31 00:36:58,659 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-03-31 00:36:58,659 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-03-31 00:36:58,659 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-03-31 00:36:58,660 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-03-31 00:36:58,660 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-03-31 00:36:58,660 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2023-03-31 00:36:58,661 INFO  L138        SettingsManager]:  * Use SBE=true
[2023-03-31 00:36:58,661 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-03-31 00:36:58,661 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-03-31 00:36:58,661 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-03-31 00:36:58,661 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-03-31 00:36:58,661 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-03-31 00:36:58,662 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-03-31 00:36:58,662 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-03-31 00:36:58,662 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-03-31 00:36:58,662 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-03-31 00:36:58,662 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-03-31 00:36:58,662 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-03-31 00:36:58,663 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-03-31 00:36:58,663 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-03-31 00:36:58,663 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-03-31 00:36:58,663 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-03-31 00:36:58,663 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-03-31 00:36:58,664 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-03-31 00:36:58,664 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-03-31 00:36:58,664 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-03-31 00:36:58,664 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-03-31 00:36:58,664 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-03-31 00:36:58,664 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-03-31 00:36:58,665 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-03-31 00:36:58,665 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-03-31 00:36:58,665 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-03-31 00:36:58,665 INFO  L138        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-03-31 00:36:58,665 INFO  L138        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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-03-31 00:36:58,849 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-03-31 00:36:58,873 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-03-31 00:36:58,875 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-03-31 00:36:58,876 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-03-31 00:36:58,876 INFO  L275        PluginConnector]: CDTParser initialized
[2023-03-31 00:36:58,877 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound50.c
[2023-03-31 00:37:00,156 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-03-31 00:37:00,338 INFO  L351              CDTParser]: Found 1 translation units.
[2023-03-31 00:37:00,338 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound50.c
[2023-03-31 00:37:00,346 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11365df14/3beeafb74f4f46e6b8b564788005a71e/FLAGd77082c04
[2023-03-31 00:37:00,360 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11365df14/3beeafb74f4f46e6b8b564788005a71e
[2023-03-31 00:37:00,362 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-03-31 00:37:00,364 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-03-31 00:37:00,365 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-03-31 00:37:00,365 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-03-31 00:37:00,371 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-03-31 00:37:00,375 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:37:00" (1/1) ...
[2023-03-31 00:37:00,376 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58d68957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:37:00, skipping insertion in model container
[2023-03-31 00:37:00,376 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:37:00" (1/1) ...
[2023-03-31 00:37:00,382 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-03-31 00:37:00,393 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-03-31 00:37:00,508 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound50.c[555,568]
[2023-03-31 00:37:00,520 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-03-31 00:37:00,529 INFO  L203         MainTranslator]: Completed pre-run
[2023-03-31 00:37:00,540 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound50.c[555,568]
[2023-03-31 00:37:00,545 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-03-31 00:37:00,556 INFO  L208         MainTranslator]: Completed translation
[2023-03-31 00:37:00,557 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:37:00 WrapperNode
[2023-03-31 00:37:00,557 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-03-31 00:37:00,558 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-03-31 00:37:00,558 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-03-31 00:37:00,558 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-03-31 00:37:00,568 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:37:00" (1/1) ...
[2023-03-31 00:37:00,568 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:37:00" (1/1) ...
[2023-03-31 00:37:00,574 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:37:00" (1/1) ...
[2023-03-31 00:37:00,575 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:37:00" (1/1) ...
[2023-03-31 00:37:00,583 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:37:00" (1/1) ...
[2023-03-31 00:37:00,585 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:37:00" (1/1) ...
[2023-03-31 00:37:00,590 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:37:00" (1/1) ...
[2023-03-31 00:37:00,591 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:37:00" (1/1) ...
[2023-03-31 00:37:00,592 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-03-31 00:37:00,592 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-03-31 00:37:00,592 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-03-31 00:37:00,592 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-03-31 00:37:00,593 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:37:00" (1/1) ...
[2023-03-31 00:37:00,598 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-03-31 00:37:00,612 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-31 00:37:00,623 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-03-31 00:37:00,627 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-03-31 00:37:00,652 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-03-31 00:37:00,652 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-03-31 00:37:00,653 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-03-31 00:37:00,653 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-03-31 00:37:00,653 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2023-03-31 00:37:00,653 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-03-31 00:37:00,653 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-03-31 00:37:00,653 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-03-31 00:37:00,653 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-03-31 00:37:00,653 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-03-31 00:37:00,654 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint
[2023-03-31 00:37:00,654 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-03-31 00:37:00,654 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2023-03-31 00:37:00,654 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-03-31 00:37:00,654 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-03-31 00:37:00,654 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-03-31 00:37:00,654 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-03-31 00:37:00,654 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-03-31 00:37:00,655 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-03-31 00:37:00,655 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-03-31 00:37:00,708 INFO  L236             CfgBuilder]: Building ICFG
[2023-03-31 00:37:00,709 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-03-31 00:37:00,827 INFO  L277             CfgBuilder]: Performing block encoding
[2023-03-31 00:37:00,832 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-03-31 00:37:00,832 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-03-31 00:37:00,834 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:37:00 BoogieIcfgContainer
[2023-03-31 00:37:00,834 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-03-31 00:37:00,836 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-03-31 00:37:00,837 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-03-31 00:37:00,840 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-03-31 00:37:00,840 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 12:37:00" (1/3) ...
[2023-03-31 00:37:00,841 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4511f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:37:00, skipping insertion in model container
[2023-03-31 00:37:00,841 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:37:00" (2/3) ...
[2023-03-31 00:37:00,841 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4511f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:37:00, skipping insertion in model container
[2023-03-31 00:37:00,841 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:37:00" (3/3) ...
[2023-03-31 00:37:00,842 INFO  L112   eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound50.c
[2023-03-31 00:37:00,858 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-03-31 00:37:00,858 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-03-31 00:37:00,894 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-03-31 00:37:00,899 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=LoopsAndPotentialCycles, 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;@2bef6aac, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-03-31 00:37:00,900 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-03-31 00:37:00,904 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2023-03-31 00:37:00,910 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2023-03-31 00:37:00,910 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-31 00:37:00,911 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-31 00:37:00,912 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-31 00:37:00,916 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-31 00:37:00,916 INFO  L85        PathProgramCache]: Analyzing trace with hash 1335806002, now seen corresponding path program 1 times
[2023-03-31 00:37:00,924 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-03-31 00:37:00,924 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372417479]
[2023-03-31 00:37:00,925 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-31 00:37:00,925 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-31 00:37:01,006 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-31 00:37:01,028 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-03-31 00:37:01,029 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372417479]
[2023-03-31 00:37:01,029 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic
[2023-03-31 00:37:01,029 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854353898]
[2023-03-31 00:37:01,029 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-31 00:37:01,030 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-31 00:37:01,030 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-31 00:37:01,037 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)
[2023-03-31 00:37:01,045 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-03-31 00:37:01,127 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-31 00:37:01,129 INFO  L262         TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-03-31 00:37:01,133 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-03-31 00:37:01,154 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-03-31 00:37:01,154 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-03-31 00:37:01,155 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [854353898] provided 1 perfect and 0 imperfect interpolant sequences
[2023-03-31 00:37:01,155 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-03-31 00:37:01,155 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-03-31 00:37:01,157 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180729659]
[2023-03-31 00:37:01,157 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-03-31 00:37:01,169 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-03-31 00:37:01,170 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-03-31 00:37:01,195 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-03-31 00:37:01,196 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-03-31 00:37:01,198 INFO  L87              Difference]: Start difference. First operand  has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand  has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2023-03-31 00:37:01,218 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-31 00:37:01,218 INFO  L93              Difference]: Finished difference Result 53 states and 68 transitions.
[2023-03-31 00:37:01,219 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-03-31 00:37:01,220 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23
[2023-03-31 00:37:01,221 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-31 00:37:01,227 INFO  L225             Difference]: With dead ends: 53
[2023-03-31 00:37:01,228 INFO  L226             Difference]: Without dead ends: 25
[2023-03-31 00:37:01,230 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-03-31 00:37:01,232 INFO  L413           NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-03-31 00:37:01,233 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-03-31 00:37:01,245 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2023-03-31 00:37:01,258 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2023-03-31 00:37:01,259 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 25 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2023-03-31 00:37:01,260 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions.
[2023-03-31 00:37:01,261 INFO  L78                 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 23
[2023-03-31 00:37:01,261 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-31 00:37:01,261 INFO  L495      AbstractCegarLoop]: Abstraction has 25 states and 27 transitions.
[2023-03-31 00:37:01,261 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2023-03-31 00:37:01,262 INFO  L276                IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions.
[2023-03-31 00:37:01,263 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2023-03-31 00:37:01,265 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-31 00:37:01,265 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-31 00:37:01,275 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-03-31 00:37:01,475 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
[2023-03-31 00:37:01,476 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-31 00:37:01,477 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-31 00:37:01,477 INFO  L85        PathProgramCache]: Analyzing trace with hash 736000694, now seen corresponding path program 1 times
[2023-03-31 00:37:01,477 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-03-31 00:37:01,477 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435452315]
[2023-03-31 00:37:01,478 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-31 00:37:01,478 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-31 00:37:01,497 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-03-31 00:37:01,497 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95949463]
[2023-03-31 00:37:01,498 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-31 00:37:01,498 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-31 00:37:01,498 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-31 00:37:01,499 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)
[2023-03-31 00:37:01,508 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-03-31 00:37:01,577 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-31 00:37:01,578 INFO  L262         TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-03-31 00:37:01,582 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-03-31 00:37:01,757 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-03-31 00:37:01,757 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-03-31 00:37:01,829 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-03-31 00:37:01,829 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-03-31 00:37:01,830 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435452315]
[2023-03-31 00:37:01,830 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-03-31 00:37:01,830 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95949463]
[2023-03-31 00:37:01,830 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [95949463] provided 1 perfect and 1 imperfect interpolant sequences
[2023-03-31 00:37:01,830 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-03-31 00:37:01,830 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11
[2023-03-31 00:37:01,831 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223472733]
[2023-03-31 00:37:01,831 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-03-31 00:37:01,832 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-03-31 00:37:01,832 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-03-31 00:37:01,833 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-03-31 00:37:01,833 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110
[2023-03-31 00:37:01,833 INFO  L87              Difference]: Start difference. First operand 25 states and 27 transitions. Second operand  has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2023-03-31 00:37:01,884 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-31 00:37:01,885 INFO  L93              Difference]: Finished difference Result 31 states and 32 transitions.
[2023-03-31 00:37:01,885 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-03-31 00:37:01,885 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23
[2023-03-31 00:37:01,886 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-31 00:37:01,886 INFO  L225             Difference]: With dead ends: 31
[2023-03-31 00:37:01,886 INFO  L226             Difference]: Without dead ends: 27
[2023-03-31 00:37:01,887 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132
[2023-03-31 00:37:01,888 INFO  L413           NwaCegarLoop]: 22 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-03-31 00:37:01,889 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 77 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-03-31 00:37:01,889 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2023-03-31 00:37:01,894 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2023-03-31 00:37:01,895 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 27 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2023-03-31 00:37:01,895 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions.
[2023-03-31 00:37:01,895 INFO  L78                 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 23
[2023-03-31 00:37:01,896 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-31 00:37:01,897 INFO  L495      AbstractCegarLoop]: Abstraction has 27 states and 28 transitions.
[2023-03-31 00:37:01,897 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2023-03-31 00:37:01,897 INFO  L276                IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions.
[2023-03-31 00:37:01,898 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2023-03-31 00:37:01,898 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-31 00:37:01,898 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-31 00:37:01,913 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-03-31 00:37:02,109 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
[2023-03-31 00:37:02,110 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-31 00:37:02,110 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-31 00:37:02,110 INFO  L85        PathProgramCache]: Analyzing trace with hash -1598096837, now seen corresponding path program 1 times
[2023-03-31 00:37:02,110 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-03-31 00:37:02,111 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120030682]
[2023-03-31 00:37:02,111 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-31 00:37:02,111 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-31 00:37:02,132 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-03-31 00:37:02,133 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912735870]
[2023-03-31 00:37:02,133 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-31 00:37:02,133 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-31 00:37:02,138 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-31 00:37:02,139 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)
[2023-03-31 00:37:02,142 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-03-31 00:37:02,181 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-03-31 00:37:02,181 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-03-31 00:37:02,194 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-03-31 00:37:02,213 INFO  L130   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-03-31 00:37:02,214 INFO  L360         BasicCegarLoop]: Counterexample is feasible
[2023-03-31 00:37:02,215 INFO  L805   garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-03-31 00:37:02,225 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-03-31 00:37:02,422 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
[2023-03-31 00:37:02,425 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2023-03-31 00:37:02,431 INFO  L178   ceAbstractionStarter]: Computing trace abstraction results
[2023-03-31 00:37:02,447 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 12:37:02 BoogieIcfgContainer
[2023-03-31 00:37:02,447 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-03-31 00:37:02,448 INFO  L158              Benchmark]: Toolchain (without parser) took 2084.33ms. Allocated memory is still 265.3MB. Free memory was 217.9MB in the beginning and 206.3MB in the end (delta: 11.7MB). Peak memory consumption was 13.0MB. Max. memory is 8.0GB.
[2023-03-31 00:37:02,448 INFO  L158              Benchmark]: CDTParser took 0.16ms. Allocated memory is still 184.5MB. Free memory is still 137.0MB. There was no memory consumed. Max. memory is 8.0GB.
[2023-03-31 00:37:02,449 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 192.40ms. Allocated memory is still 265.3MB. Free memory was 217.9MB in the beginning and 207.4MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
[2023-03-31 00:37:02,449 INFO  L158              Benchmark]: Boogie Preprocessor took 33.84ms. Allocated memory is still 265.3MB. Free memory was 207.4MB in the beginning and 205.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2023-03-31 00:37:02,450 INFO  L158              Benchmark]: RCFGBuilder took 242.23ms. Allocated memory is still 265.3MB. Free memory was 205.8MB in the beginning and 194.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
[2023-03-31 00:37:02,450 INFO  L158              Benchmark]: TraceAbstraction took 1611.08ms. Allocated memory is still 265.3MB. Free memory was 193.8MB in the beginning and 206.3MB in the end (delta: -12.4MB). There was no memory consumed. Max. memory is 8.0GB.
[2023-03-31 00:37:02,452 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.16ms. Allocated memory is still 184.5MB. Free memory is still 137.0MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 192.40ms. Allocated memory is still 265.3MB. Free memory was 217.9MB in the beginning and 207.4MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 33.84ms. Allocated memory is still 265.3MB. Free memory was 207.4MB in the beginning and 205.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
 * RCFGBuilder took 242.23ms. Allocated memory is still 265.3MB. Free memory was 205.8MB in the beginning and 194.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
 * TraceAbstraction took 1611.08ms. Allocated memory is still 265.3MB. Free memory was 193.8MB in the beginning and 206.3MB in the end (delta: -12.4MB). There was no memory consumed. 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: 18]: a call to reach_error is reachable
    a call to reach_error is reachable
We found a FailurePath: 
[L23]              unsigned int z, k;
[L24]              long long x, y, c;
[L25]              z = __VERIFIER_nondet_uint()
[L26]  CALL        assume_abort_if_not(z>=0 && z<=50)
       VAL         [\old(cond)=1]
[L13]  COND FALSE  !(!cond)
       VAL         [\old(cond)=1, cond=1]
[L26]  RET         assume_abort_if_not(z>=0 && z<=50)
       VAL         [z=4294967296]
[L27]              k = __VERIFIER_nondet_uint()
[L28]  CALL        assume_abort_if_not(k>=0 && k<=50)
       VAL         [\old(cond)=1]
[L13]  COND FALSE  !(!cond)
       VAL         [\old(cond)=1, cond=1]
[L28]  RET         assume_abort_if_not(k>=0 && k<=50)
       VAL         [k=1, z=4294967296]
[L30]              x = 1
[L31]              y = z
[L32]              c = 1
       VAL         [c=1, k=1, x=1, y=0, z=4294967296]
[L34]  COND TRUE   1
       VAL         [c=1, k=1, x=1, y=0, z=4294967296]
[L35]  CALL        __VERIFIER_assert(x*z - x - y + 1 == 0)
       VAL         [\old(cond)=1]
[L16]  COND FALSE  !(!(cond))
       VAL         [\old(cond)=1, cond=1]
[L35]  RET         __VERIFIER_assert(x*z - x - y + 1 == 0)
       VAL         [c=1, k=1, x=1, y=0, z=4294967296]
[L37]  COND TRUE   !(c < k)
       VAL         [c=1, k=1, x=1, y=0, z=4294967296]
[L46]              x = x * (z - 1)
       VAL         [c=1, k=1, x=4294967295, y=0, z=4294967296]
[L48]  CALL        __VERIFIER_assert(1 + x - y == 0)
       VAL         [\old(cond)=0]
[L16]  COND TRUE   !(cond)
       VAL         [\old(cond)=0, cond=0]
[L18]              reach_error()
       VAL         [\old(cond)=0, cond=0]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 109 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 55 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23 IncrementalHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 54 mSDtfsCounter, 23 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 142 SizeOfPredicates, 2 NumberOfNonLiveVariables, 154 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 9/12 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!
[2023-03-31 00:37:02,469 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...