/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/freire1_unwindbound20.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-dev-6c470ae
[2022-02-15 02:29:07,457 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-02-15 02:29:07,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-02-15 02:29:07,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-02-15 02:29:07,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-02-15 02:29:07,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-02-15 02:29:07,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-02-15 02:29:07,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-02-15 02:29:07,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-02-15 02:29:07,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-02-15 02:29:07,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-02-15 02:29:07,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-02-15 02:29:07,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-02-15 02:29:07,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-02-15 02:29:07,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-02-15 02:29:07,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-02-15 02:29:07,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-02-15 02:29:07,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-02-15 02:29:07,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-02-15 02:29:07,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-02-15 02:29:07,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-02-15 02:29:07,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-02-15 02:29:07,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-02-15 02:29:07,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-02-15 02:29:07,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-02-15 02:29:07,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-02-15 02:29:07,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-02-15 02:29:07,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
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[2022-02-15 02:29:07,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-02-15 02:29:07,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-02-15 02:29:07,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-02-15 02:29:07,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-02-15 02:29:07,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-02-15 02:29:07,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
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[2022-02-15 02:29:07,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2022-02-15 02:29:07,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-02-15 02:29:07,537 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf
[2022-02-15 02:29:07,547 INFO L113 SettingsManager]: Loading preferences was successful
[2022-02-15 02:29:07,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-02-15 02:29:07,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-02-15 02:29:07,548 INFO L138 SettingsManager]: * sizeof long=4
[2022-02-15 02:29:07,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-02-15 02:29:07,549 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-02-15 02:29:07,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-02-15 02:29:07,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-02-15 02:29:07,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-02-15 02:29:07,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-02-15 02:29:07,550 INFO L138 SettingsManager]: * sizeof long double=12
[2022-02-15 02:29:07,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-02-15 02:29:07,550 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-02-15 02:29:07,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-02-15 02:29:07,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-02-15 02:29:07,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-02-15 02:29:07,550 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-02-15 02:29:07,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-02-15 02:29:07,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-15 02:29:07,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-02-15 02:29:07,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2022-02-15 02:29:07,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-02-15 02:29:07,551 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN
[2022-02-15 02:29:07,551 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-02-15 02:29:07,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-02-15 02:29:07,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-02-15 02:29:07,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-02-15 02:29:07,746 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-02-15 02:29:07,746 INFO L275 PluginConnector]: CDTParser initialized
[2022-02-15 02:29:07,747 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/freire1_unwindbound20.c
[2022-02-15 02:29:07,807 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c105c6dd/a9dac419085a4583ba297495d730166d/FLAGf6fb9e567
[2022-02-15 02:29:08,174 INFO L306 CDTParser]: Found 1 translation units.
[2022-02-15 02:29:08,174 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/freire1_unwindbound20.c
[2022-02-15 02:29:08,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c105c6dd/a9dac419085a4583ba297495d730166d/FLAGf6fb9e567
[2022-02-15 02:29:08,608 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c105c6dd/a9dac419085a4583ba297495d730166d
[2022-02-15 02:29:08,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-02-15 02:29:08,612 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2022-02-15 02:29:08,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-02-15 02:29:08,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-02-15 02:29:08,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-02-15 02:29:08,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:29:08" (1/1) ...
[2022-02-15 02:29:08,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75ce6533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:29:08, skipping insertion in model container
[2022-02-15 02:29:08,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:29:08" (1/1) ...
[2022-02-15 02:29:08,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-02-15 02:29:08,634 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-02-15 02:29:08,780 WARN L230 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/freire1_unwindbound20.c[712,725]
[2022-02-15 02:29:08,789 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-02-15 02:29:08,795 INFO L203 MainTranslator]: Completed pre-run
[2022-02-15 02:29:08,804 WARN L230 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/freire1_unwindbound20.c[712,725]
[2022-02-15 02:29:08,810 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-02-15 02:29:08,820 INFO L208 MainTranslator]: Completed translation
[2022-02-15 02:29:08,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:29:08 WrapperNode
[2022-02-15 02:29:08,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-02-15 02:29:08,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-02-15 02:29:08,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-02-15 02:29:08,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-02-15 02:29:08,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:29:08" (1/1) ...
[2022-02-15 02:29:08,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:29:08" (1/1) ...
[2022-02-15 02:29:08,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:29:08" (1/1) ...
[2022-02-15 02:29:08,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:29:08" (1/1) ...
[2022-02-15 02:29:08,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:29:08" (1/1) ...
[2022-02-15 02:29:08,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:29:08" (1/1) ...
[2022-02-15 02:29:08,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:29:08" (1/1) ...
[2022-02-15 02:29:08,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-02-15 02:29:08,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-02-15 02:29:08,859 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-02-15 02:29:08,859 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-02-15 02:29:08,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:29:08" (1/1) ...
[2022-02-15 02:29:08,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-15 02:29:08,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-15 02:29:08,882 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)
[2022-02-15 02:29:08,889 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
[2022-02-15 02:29:08,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-02-15 02:29:08,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-02-15 02:29:08,909 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2022-02-15 02:29:08,909 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-02-15 02:29:08,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-02-15 02:29:08,909 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2022-02-15 02:29:08,909 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2022-02-15 02:29:08,910 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-02-15 02:29:08,910 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2022-02-15 02:29:08,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-02-15 02:29:08,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double
[2022-02-15 02:29:08,910 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-02-15 02:29:08,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-02-15 02:29:08,910 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2022-02-15 02:29:08,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-02-15 02:29:08,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-02-15 02:29:08,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-02-15 02:29:08,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-02-15 02:29:08,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-02-15 02:29:08,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-02-15 02:29:08,957 INFO L234 CfgBuilder]: Building ICFG
[2022-02-15 02:29:08,958 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-02-15 02:29:09,081 INFO L275 CfgBuilder]: Performing block encoding
[2022-02-15 02:29:09,085 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-02-15 02:29:09,085 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2022-02-15 02:29:09,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:29:09 BoogieIcfgContainer
[2022-02-15 02:29:09,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-02-15 02:29:09,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-02-15 02:29:09,088 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-02-15 02:29:09,113 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-02-15 02:29:09,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 02:29:08" (1/3) ...
[2022-02-15 02:29:09,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ebb135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:29:09, skipping insertion in model container
[2022-02-15 02:29:09,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:29:08" (2/3) ...
[2022-02-15 02:29:09,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ebb135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:29:09, skipping insertion in model container
[2022-02-15 02:29:09,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:29:09" (3/3) ...
[2022-02-15 02:29:09,115 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound20.c
[2022-02-15 02:29:09,133 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2022-02-15 02:29:09,133 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-02-15 02:29:09,178 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-02-15 02:29:09,184 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=JORDAN
[2022-02-15 02:29:09,185 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-02-15 02:29:09,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-02-15 02:29:09,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-02-15 02:29:09,212 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-15 02:29:09,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-15 02:29:09,213 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-15 02:29:09,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-15 02:29:09,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1665267581, now seen corresponding path program 1 times
[2022-02-15 02:29:09,222 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-15 02:29:09,222 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146406043]
[2022-02-15 02:29:09,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-15 02:29:09,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-15 02:29:09,269 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-02-15 02:29:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 02:29:09,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-15 02:29:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 02:29:09,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-15 02:29:09,378 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-15 02:29:09,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146406043]
[2022-02-15 02:29:09,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [146406043] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-15 02:29:09,379 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-15 02:29:09,379 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-02-15 02:29:09,380 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253830271]
[2022-02-15 02:29:09,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-15 02:29:09,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-02-15 02:29:09,384 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-15 02:29:09,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-02-15 02:29:09,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-15 02:29:09,407 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-15 02:29:09,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-15 02:29:09,459 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions.
[2022-02-15 02:29:09,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-02-15 02:29:09,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11
[2022-02-15 02:29:09,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-15 02:29:09,465 INFO L225 Difference]: With dead ends: 39
[2022-02-15 02:29:09,466 INFO L226 Difference]: Without dead ends: 18
[2022-02-15 02:29:09,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-15 02:29:09,471 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-15 02:29:09,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-15 02:29:09,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2022-02-15 02:29:09,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17.
[2022-02-15 02:29:09,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-02-15 02:29:09,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions.
[2022-02-15 02:29:09,504 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11
[2022-02-15 02:29:09,505 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-15 02:29:09,505 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions.
[2022-02-15 02:29:09,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-15 02:29:09,505 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions.
[2022-02-15 02:29:09,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-02-15 02:29:09,507 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-15 02:29:09,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-15 02:29:09,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-02-15 02:29:09,508 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-15 02:29:09,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-15 02:29:09,509 INFO L85 PathProgramCache]: Analyzing trace with hash -318583316, now seen corresponding path program 1 times
[2022-02-15 02:29:09,509 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-15 02:29:09,509 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598492195]
[2022-02-15 02:29:09,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-15 02:29:09,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-15 02:29:09,514 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-02-15 02:29:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 02:29:09,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-15 02:29:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 02:29:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-15 02:29:09,630 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-15 02:29:09,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598492195]
[2022-02-15 02:29:09,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [598492195] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-15 02:29:09,630 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-15 02:29:09,630 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-02-15 02:29:09,630 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448924191]
[2022-02-15 02:29:09,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-15 02:29:09,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-02-15 02:29:09,631 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-15 02:29:09,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-02-15 02:29:09,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-02-15 02:29:09,632 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-15 02:29:09,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-15 02:29:09,679 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions.
[2022-02-15 02:29:09,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-02-15 02:29:09,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12
[2022-02-15 02:29:09,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-15 02:29:09,680 INFO L225 Difference]: With dead ends: 26
[2022-02-15 02:29:09,680 INFO L226 Difference]: Without dead ends: 19
[2022-02-15 02:29:09,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-02-15 02:29:09,681 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-15 02:29:09,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 33 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-15 02:29:09,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2022-02-15 02:29:09,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2022-02-15 02:29:09,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-02-15 02:29:09,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions.
[2022-02-15 02:29:09,691 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12
[2022-02-15 02:29:09,691 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-15 02:29:09,694 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions.
[2022-02-15 02:29:09,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-02-15 02:29:09,694 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions.
[2022-02-15 02:29:09,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-02-15 02:29:09,694 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-15 02:29:09,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-15 02:29:09,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-02-15 02:29:09,694 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-15 02:29:09,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-15 02:29:09,695 INFO L85 PathProgramCache]: Analyzing trace with hash -316795856, now seen corresponding path program 1 times
[2022-02-15 02:29:09,695 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-15 02:29:09,695 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927397423]
[2022-02-15 02:29:09,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-15 02:29:09,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-15 02:29:09,697 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-02-15 02:29:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-02-15 02:29:09,708 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-02-15 02:29:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-02-15 02:29:09,730 INFO L138 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2022-02-15 02:29:09,730 INFO L628 BasicCegarLoop]: Counterexample is feasible
[2022-02-15 02:29:09,732 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-02-15 02:29:09,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-02-15 02:29:09,736 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2022-02-15 02:29:09,737 INFO L180 ceAbstractionStarter]: Computing trace abstraction results
[2022-02-15 02:29:09,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 02:29:09 BoogieIcfgContainer
[2022-02-15 02:29:09,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-02-15 02:29:09,750 INFO L158 Benchmark]: Toolchain (without parser) took 1137.85ms. Allocated memory is still 174.1MB. Free memory was 124.8MB in the beginning and 102.5MB in the end (delta: 22.3MB). Peak memory consumption was 21.2MB. Max. memory is 8.0GB.
[2022-02-15 02:29:09,750 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 174.1MB. Free memory is still 141.1MB. There was no memory consumed. Max. memory is 8.0GB.
[2022-02-15 02:29:09,750 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.48ms. Allocated memory is still 174.1MB. Free memory was 124.6MB in the beginning and 149.8MB in the end (delta: -25.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
[2022-02-15 02:29:09,752 INFO L158 Benchmark]: Boogie Preprocessor took 36.43ms. Allocated memory is still 174.1MB. Free memory was 149.8MB in the beginning and 148.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2022-02-15 02:29:09,756 INFO L158 Benchmark]: RCFGBuilder took 227.69ms. Allocated memory is still 174.1MB. Free memory was 148.3MB in the beginning and 138.4MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB.
[2022-02-15 02:29:09,758 INFO L158 Benchmark]: TraceAbstraction took 661.56ms. Allocated memory is still 174.1MB. Free memory was 137.8MB in the beginning and 102.8MB in the end (delta: 35.0MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB.
[2022-02-15 02:29:09,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.13ms. Allocated memory is still 174.1MB. Free memory is still 141.1MB. There was no memory consumed. Max. memory is 8.0GB.
* CACSL2BoogieTranslator took 207.48ms. Allocated memory is still 174.1MB. Free memory was 124.6MB in the beginning and 149.8MB in the end (delta: -25.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
* Boogie Preprocessor took 36.43ms. Allocated memory is still 174.1MB. Free memory was 149.8MB in the beginning and 148.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
* RCFGBuilder took 227.69ms. Allocated memory is still 174.1MB. Free memory was 148.3MB in the beginning and 138.4MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB.
* TraceAbstraction took 661.56ms. Allocated memory is still 174.1MB. Free memory was 137.8MB in the beginning and 102.8MB in the end (delta: 35.0MB). Peak memory consumption was 34.6MB. 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: 19]: Unable to prove that call to reach_error is unreachable
Unable to prove that call to reach_error is unreachable
Reason: overapproximation of to_int at line 33, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29.
Possible FailurePath:
[L24] int counter = 0;
[L26] int r;
[L27] double a, x;
[L28] a = __VERIFIER_nondet_double()
[L29] x = a / 2.0
[L30] r = 0
[L32] EXPR counter++
[L32] COND TRUE counter++<20
[L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0)
[L17] COND TRUE !(cond)
[L19] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 40 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, 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
[2022-02-15 02:29:09,782 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...