/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/float-benchs/water_pid.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-dev-d966a43
[2022-02-01 00:16:21,180 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-02-01 00:16:21,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-02-01 00:16:21,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-02-01 00:16:21,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-02-01 00:16:21,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-02-01 00:16:21,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-02-01 00:16:21,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-02-01 00:16:21,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-02-01 00:16:21,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-02-01 00:16:21,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-02-01 00:16:21,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-02-01 00:16:21,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-02-01 00:16:21,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-02-01 00:16:21,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-02-01 00:16:21,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-02-01 00:16:21,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-02-01 00:16:21,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-02-01 00:16:21,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-02-01 00:16:21,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-02-01 00:16:21,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-02-01 00:16:21,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-02-01 00:16:21,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-02-01 00:16:21,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-02-01 00:16:21,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-02-01 00:16:21,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-02-01 00:16:21,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2022-02-01 00:16:21,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
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[2022-02-01 00:16:21,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2022-02-01 00:16:21,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-02-01 00:16:21,271 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf
[2022-02-01 00:16:21,280 INFO L113 SettingsManager]: Loading preferences was successful
[2022-02-01 00:16:21,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-02-01 00:16:21,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-02-01 00:16:21,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-02-01 00:16:21,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-02-01 00:16:21,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-02-01 00:16:21,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-02-01 00:16:21,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-02-01 00:16:21,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-02-01 00:16:21,282 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-02-01 00:16:21,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-02-01 00:16:21,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-02-01 00:16:21,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-02-01 00:16:21,283 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-02-01 00:16:21,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-02-01 00:16:21,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-01 00:16:21,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-02-01 00:16:21,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2022-02-01 00:16:21,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-02-01 00:16:21,284 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR
[2022-02-01 00:16:21,284 INFO L138 SettingsManager]: * Use separate solver for trace checks=false
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-02-01 00:16:21,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-02-01 00:16:21,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-02-01 00:16:21,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-02-01 00:16:21,486 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-02-01 00:16:21,486 INFO L275 PluginConnector]: CDTParser initialized
[2022-02-01 00:16:21,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/water_pid.c
[2022-02-01 00:16:21,548 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e87cfa76/6e020f287fd24b9aacf8cdb93d5fc56f/FLAG31ba89f23
[2022-02-01 00:16:21,868 INFO L306 CDTParser]: Found 1 translation units.
[2022-02-01 00:16:21,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/water_pid.c
[2022-02-01 00:16:21,878 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e87cfa76/6e020f287fd24b9aacf8cdb93d5fc56f/FLAG31ba89f23
[2022-02-01 00:16:22,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e87cfa76/6e020f287fd24b9aacf8cdb93d5fc56f
[2022-02-01 00:16:22,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-02-01 00:16:22,292 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2022-02-01 00:16:22,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-02-01 00:16:22,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-02-01 00:16:22,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-02-01 00:16:22,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:16:22" (1/1) ...
[2022-02-01 00:16:22,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ca00b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:16:22, skipping insertion in model container
[2022-02-01 00:16:22,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:16:22" (1/1) ...
[2022-02-01 00:16:22,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-02-01 00:16:22,313 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-02-01 00:16:22,427 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/water_pid.c[452,465]
[2022-02-01 00:16:22,445 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-02-01 00:16:22,450 INFO L203 MainTranslator]: Completed pre-run
[2022-02-01 00:16:22,457 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/water_pid.c[452,465]
[2022-02-01 00:16:22,461 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-02-01 00:16:22,469 INFO L208 MainTranslator]: Completed translation
[2022-02-01 00:16:22,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:16:22 WrapperNode
[2022-02-01 00:16:22,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-02-01 00:16:22,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-02-01 00:16:22,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-02-01 00:16:22,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-02-01 00:16:22,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:16:22" (1/1) ...
[2022-02-01 00:16:22,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:16:22" (1/1) ...
[2022-02-01 00:16:22,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:16:22" (1/1) ...
[2022-02-01 00:16:22,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:16:22" (1/1) ...
[2022-02-01 00:16:22,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:16:22" (1/1) ...
[2022-02-01 00:16:22,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:16:22" (1/1) ...
[2022-02-01 00:16:22,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:16:22" (1/1) ...
[2022-02-01 00:16:22,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-02-01 00:16:22,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-02-01 00:16:22,509 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-02-01 00:16:22,510 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-02-01 00:16:22,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:16:22" (1/1) ...
[2022-02-01 00:16:22,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-01 00:16:22,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-01 00:16:22,532 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)
[2022-02-01 00:16:22,547 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
[2022-02-01 00:16:22,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-02-01 00:16:22,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-02-01 00:16:22,571 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2022-02-01 00:16:22,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-02-01 00:16:22,571 INFO L138 BoogieDeclarations]: Found implementation of procedure y
[2022-02-01 00:16:22,571 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2022-02-01 00:16:22,572 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2022-02-01 00:16:22,572 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-02-01 00:16:22,572 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2022-02-01 00:16:22,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-02-01 00:16:22,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-02-01 00:16:22,572 INFO L130 BoogieDeclarations]: Found specification of procedure y
[2022-02-01 00:16:22,572 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2022-02-01 00:16:22,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-02-01 00:16:22,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-02-01 00:16:22,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-02-01 00:16:22,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-02-01 00:16:22,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-02-01 00:16:22,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-02-01 00:16:22,630 INFO L234 CfgBuilder]: Building ICFG
[2022-02-01 00:16:22,632 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-02-01 00:16:22,765 INFO L275 CfgBuilder]: Performing block encoding
[2022-02-01 00:16:22,769 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-02-01 00:16:22,770 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2022-02-01 00:16:22,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:16:22 BoogieIcfgContainer
[2022-02-01 00:16:22,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-02-01 00:16:22,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-02-01 00:16:22,777 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-02-01 00:16:22,783 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-02-01 00:16:22,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:16:22" (1/3) ...
[2022-02-01 00:16:22,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8193cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:16:22, skipping insertion in model container
[2022-02-01 00:16:22,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:16:22" (2/3) ...
[2022-02-01 00:16:22,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8193cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:16:22, skipping insertion in model container
[2022-02-01 00:16:22,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:16:22" (3/3) ...
[2022-02-01 00:16:22,785 INFO L111 eAbstractionObserver]: Analyzing ICFG water_pid.c
[2022-02-01 00:16:22,796 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2022-02-01 00:16:22,797 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-02-01 00:16:22,825 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-02-01 00:16:22,830 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mLoopAccelerationTechnique=QVASR
[2022-02-01 00:16:22,830 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-02-01 00:16:22,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2022-02-01 00:16:22,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2022-02-01 00:16:22,845 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-01 00:16:22,845 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-01 00:16:22,845 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-01 00:16:22,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-01 00:16:22,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1798433575, now seen corresponding path program 1 times
[2022-02-01 00:16:22,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-01 00:16:22,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903897094]
[2022-02-01 00:16:22,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-01 00:16:22,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-01 00:16:22,906 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-02-01 00:16:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-02-01 00:16:22,944 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-02-01 00:16:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-02-01 00:16:22,997 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2022-02-01 00:16:22,998 INFO L628 BasicCegarLoop]: Counterexample is feasible
[2022-02-01 00:16:23,001 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-02-01 00:16:23,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-02-01 00:16:23,008 INFO L732 BasicCegarLoop]: Path program histogram: [1]
[2022-02-01 00:16:23,011 INFO L180 ceAbstractionStarter]: Computing trace abstraction results
[2022-02-01 00:16:23,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:16:23 BoogieIcfgContainer
[2022-02-01 00:16:23,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-02-01 00:16:23,024 INFO L158 Benchmark]: Toolchain (without parser) took 731.08ms. Allocated memory was 173.0MB in the beginning and 212.9MB in the end (delta: 39.8MB). Free memory was 120.2MB in the beginning and 158.9MB in the end (delta: -38.6MB). Peak memory consumption was 2.8MB. Max. memory is 8.0GB.
[2022-02-01 00:16:23,025 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 173.0MB. Free memory is still 136.5MB. There was no memory consumed. Max. memory is 8.0GB.
[2022-02-01 00:16:23,025 INFO L158 Benchmark]: CACSL2BoogieTranslator took 175.52ms. Allocated memory was 173.0MB in the beginning and 212.9MB in the end (delta: 39.8MB). Free memory was 120.0MB in the beginning and 186.7MB in the end (delta: -66.6MB). Peak memory consumption was 8.0MB. Max. memory is 8.0GB.
[2022-02-01 00:16:23,026 INFO L158 Benchmark]: Boogie Preprocessor took 37.56ms. Allocated memory is still 212.9MB. Free memory was 186.7MB in the beginning and 184.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2022-02-01 00:16:23,026 INFO L158 Benchmark]: RCFGBuilder took 267.36ms. Allocated memory is still 212.9MB. Free memory was 184.9MB in the beginning and 173.5MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB.
[2022-02-01 00:16:23,030 INFO L158 Benchmark]: TraceAbstraction took 245.44ms. Allocated memory is still 212.9MB. Free memory was 173.0MB in the beginning and 158.9MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB.
[2022-02-01 00:16:23,033 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.09ms. Allocated memory is still 173.0MB. Free memory is still 136.5MB. There was no memory consumed. Max. memory is 8.0GB.
* CACSL2BoogieTranslator took 175.52ms. Allocated memory was 173.0MB in the beginning and 212.9MB in the end (delta: 39.8MB). Free memory was 120.0MB in the beginning and 186.7MB in the end (delta: -66.6MB). Peak memory consumption was 8.0MB. Max. memory is 8.0GB.
* Boogie Preprocessor took 37.56ms. Allocated memory is still 212.9MB. Free memory was 186.7MB in the beginning and 184.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
* RCFGBuilder took 267.36ms. Allocated memory is still 212.9MB. Free memory was 184.9MB in the beginning and 173.5MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB.
* TraceAbstraction took 245.44ms. Allocated memory is still 212.9MB. Free memory was 173.0MB in the beginning and 158.9MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. 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
- UnprovableResult [Line: 8]: Unable to prove that call to reach_error is unreachable
Unable to prove that call to reach_error is unreachable
Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 46, overapproximation of to_real at line 31, overapproximation of someBinaryArithmeticDOUBLEoperation at line 41.
Possible FailurePath:
[L12] static NUM yn = 0;
[L14] NUM ui = 0;
[L24] NUM yi, yc;
[L25] NUM K;
[L26] NUM T;
[L27] NUM taui;
[L28] NUM taud;
[L29] NUM ei, sumej, epi;
[L30] int i;
[L31] T = 1
[L32] taui = 1
[L33] taud = 1
[L34] K = .5
[L35] yc = .5
[L36] CALL, EXPR y(0)
[L18] yn += ui
[L19] return yn;
[L36] RET, EXPR y(0)
[L36] yi = y(0)
[L37] epi = yc-yi
[L38] sumej = epi
[L39] i=0
[L39] COND TRUE i<120
[L40] CALL, EXPR y(i)
[L18] yn += ui
[L19] return yn;
[L40] RET, EXPR y(i)
[L40] yi = y(i)
[L41] ei = yc-yi
[L42] sumej = sumej+ei
[L43] ui = K*(ei+sumej*T/taui+taud/T*(ei-epi))
[L44] epi = ei
[L46] CALL __VERIFIER_assert(epi >= -1. && epi <= 1.)
[L8] COND TRUE !(cond)
[L8] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 could not prove your program: unable to determine feasibility of some traces
[2022-02-01 00:16:23,077 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...