/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/loops-crafted-1/nested3-2.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-dev-34549b5
[2022-04-06 14:52:02,989 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-04-06 14:52:03,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-04-06 14:52:03,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-04-06 14:52:03,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-04-06 14:52:03,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-04-06 14:52:03,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-04-06 14:52:03,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-04-06 14:52:03,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-04-06 14:52:03,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-04-06 14:52:03,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-04-06 14:52:03,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-04-06 14:52:03,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-04-06 14:52:03,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-04-06 14:52:03,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-04-06 14:52:03,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-04-06 14:52:03,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-04-06 14:52:03,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-04-06 14:52:03,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-04-06 14:52:03,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-04-06 14:52:03,089 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values
[2022-04-06 14:52:03,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-04-06 14:52:03,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-04-06 14:52:03,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-04-06 14:52:03,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-04-06 14:52:03,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-04-06 14:52:03,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-04-06 14:52:03,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-04-06 14:52:03,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-04-06 14:52:03,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-04-06 14:52:03,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-04-06 14:52:03,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-04-06 14:52:03,098 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-04-06 14:52:03,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-04-06 14:52:03,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-04-06 14:52:03,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-04-06 14:52:03,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-04-06 14:52:03,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-04-06 14:52:03,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-04-06 14:52:03,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-04-06 14:52:03,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-04-06 14:52:03,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-04-06 14:52:03,121 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf
[2022-04-06 14:52:03,127 INFO L113 SettingsManager]: Loading preferences was successful
[2022-04-06 14:52:03,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-04-06 14:52:03,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-04-06 14:52:03,128 INFO L138 SettingsManager]: * sizeof long=4
[2022-04-06 14:52:03,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-04-06 14:52:03,128 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-04-06 14:52:03,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-04-06 14:52:03,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-04-06 14:52:03,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-04-06 14:52:03,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-04-06 14:52:03,128 INFO L138 SettingsManager]: * sizeof long double=12
[2022-04-06 14:52:03,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-04-06 14:52:03,128 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-04-06 14:52:03,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-04-06 14:52:03,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-04-06 14:52:03,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-04-06 14:52:03,129 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-04-06 14:52:03,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-04-06 14:52:03,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-04-06 14:52:03,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-04-06 14:52:03,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation
[2022-04-06 14:52:03,129 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION
[2022-04-06 14:52:03,129 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL
[2022-04-06 14:52:03,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-04-06 14:52:03,129 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN
[2022-04-06 14:52:03,129 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-04-06 14:52:03,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-04-06 14:52:03,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-04-06 14:52:03,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-04-06 14:52:03,487 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-04-06 14:52:03,488 INFO L275 PluginConnector]: CDTParser initialized
[2022-04-06 14:52:03,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested3-2.c
[2022-04-06 14:52:03,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2e5de27f/452e1fb1cb86474a97af8d0da652fd7e/FLAGa55f5953e
[2022-04-06 14:52:03,912 INFO L306 CDTParser]: Found 1 translation units.
[2022-04-06 14:52:03,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested3-2.c
[2022-04-06 14:52:03,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2e5de27f/452e1fb1cb86474a97af8d0da652fd7e/FLAGa55f5953e
[2022-04-06 14:52:03,925 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2e5de27f/452e1fb1cb86474a97af8d0da652fd7e
[2022-04-06 14:52:03,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-04-06 14:52:03,927 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2022-04-06 14:52:03,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-04-06 14:52:03,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-04-06 14:52:03,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-04-06 14:52:03,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 02:52:03" (1/1) ...
[2022-04-06 14:52:03,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7331554a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:52:03, skipping insertion in model container
[2022-04-06 14:52:03,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 02:52:03" (1/1) ...
[2022-04-06 14:52:03,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-04-06 14:52:03,943 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-04-06 14:52:04,025 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested3-2.c[321,334]
[2022-04-06 14:52:04,040 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-04-06 14:52:04,044 INFO L203 MainTranslator]: Completed pre-run
[2022-04-06 14:52:04,051 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested3-2.c[321,334]
[2022-04-06 14:52:04,078 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-04-06 14:52:04,099 INFO L208 MainTranslator]: Completed translation
[2022-04-06 14:52:04,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:52:04 WrapperNode
[2022-04-06 14:52:04,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-04-06 14:52:04,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-04-06 14:52:04,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-04-06 14:52:04,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-04-06 14:52:04,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:52:04" (1/1) ...
[2022-04-06 14:52:04,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:52:04" (1/1) ...
[2022-04-06 14:52:04,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:52:04" (1/1) ...
[2022-04-06 14:52:04,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:52:04" (1/1) ...
[2022-04-06 14:52:04,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:52:04" (1/1) ...
[2022-04-06 14:52:04,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:52:04" (1/1) ...
[2022-04-06 14:52:04,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:52:04" (1/1) ...
[2022-04-06 14:52:04,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-04-06 14:52:04,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-04-06 14:52:04,151 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-04-06 14:52:04,151 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-04-06 14:52:04,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:52:04" (1/1) ...
[2022-04-06 14:52:04,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-04-06 14:52:04,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 14:52:04,190 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)
[2022-04-06 14:52:04,193 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
[2022-04-06 14:52:04,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-04-06 14:52:04,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-04-06 14:52:04,261 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2022-04-06 14:52:04,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-04-06 14:52:04,262 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2022-04-06 14:52:04,262 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2022-04-06 14:52:04,262 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-04-06 14:52:04,262 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2022-04-06 14:52:04,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-04-06 14:52:04,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-04-06 14:52:04,263 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2022-04-06 14:52:04,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-04-06 14:52:04,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-04-06 14:52:04,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-04-06 14:52:04,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-04-06 14:52:04,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-04-06 14:52:04,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-04-06 14:52:04,303 INFO L234 CfgBuilder]: Building ICFG
[2022-04-06 14:52:04,304 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-04-06 14:52:04,388 INFO L275 CfgBuilder]: Performing block encoding
[2022-04-06 14:52:04,403 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-04-06 14:52:04,403 INFO L299 CfgBuilder]: Removed 3 assume(true) statements.
[2022-04-06 14:52:04,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 02:52:04 BoogieIcfgContainer
[2022-04-06 14:52:04,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-04-06 14:52:04,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-04-06 14:52:04,406 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-04-06 14:52:04,417 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-04-06 14:52:04,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 02:52:03" (1/3) ...
[2022-04-06 14:52:04,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e78f329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 02:52:04, skipping insertion in model container
[2022-04-06 14:52:04,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:52:04" (2/3) ...
[2022-04-06 14:52:04,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e78f329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 02:52:04, skipping insertion in model container
[2022-04-06 14:52:04,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 02:52:04" (3/3) ...
[2022-04-06 14:52:04,419 INFO L111 eAbstractionObserver]: Analyzing ICFG nested3-2.c
[2022-04-06 14:52:04,422 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2022-04-06 14:52:04,422 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-04-06 14:52:04,463 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-04-06 14:52:04,468 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, 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
[2022-04-06 14:52:04,468 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-04-06 14:52:04,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2022-04-06 14:52:04,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-04-06 14:52:04,482 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 14:52:04,482 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 14:52:04,483 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 14:52:04,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 14:52:04,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1794590667, now seen corresponding path program 1 times
[2022-04-06 14:52:04,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION
[2022-04-06 14:52:04,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1563661474]
[2022-04-06 14:52:04,501 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-04-06 14:52:04,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1794590667, now seen corresponding path program 2 times
[2022-04-06 14:52:04,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 14:52:04,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290711775]
[2022-04-06 14:52:04,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 14:52:04,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 14:52:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 14:52:04,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-04-06 14:52:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 14:52:04,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-06 14:52:04,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 14:52:04,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290711775]
[2022-04-06 14:52:04,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290711775] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 14:52:04,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 14:52:04,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-04-06 14:52:04,642 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace
[2022-04-06 14:52:04,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1563661474]
[2022-04-06 14:52:04,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1563661474] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 14:52:04,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 14:52:04,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-04-06 14:52:04,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450962830]
[2022-04-06 14:52:04,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-06 14:52:04,646 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-04-06 14:52:04,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION
[2022-04-06 14:52:04,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-04-06 14:52:04,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-06 14:52:04,672 INFO L87 Difference]: Start difference. First operand has 25 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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)
[2022-04-06 14:52:04,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 14:52:04,711 INFO L93 Difference]: Finished difference Result 44 states and 63 transitions.
[2022-04-06 14:52:04,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-04-06 14:52:04,713 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
[2022-04-06 14:52:04,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 14:52:04,718 INFO L225 Difference]: With dead ends: 44
[2022-04-06 14:52:04,718 INFO L226 Difference]: Without dead ends: 20
[2022-04-06 14:52:04,720 INFO L912 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
[2022-04-06 14:52:04,722 INFO L913 BasicCegarLoop]: 26 mSDtfsCounter, 16 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-04-06 14:52:04,723 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 29 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-06 14:52:04,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2022-04-06 14:52:04,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2022-04-06 14:52:04,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-04-06 14:52:04,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions.
[2022-04-06 14:52:04,750 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 11
[2022-04-06 14:52:04,751 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 14:52:04,751 INFO L478 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions.
[2022-04-06 14:52:04,751 INFO L479 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)
[2022-04-06 14:52:04,751 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions.
[2022-04-06 14:52:04,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-04-06 14:52:04,752 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 14:52:04,752 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 14:52:04,752 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-04-06 14:52:04,752 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 14:52:04,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 14:52:04,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1824143339, now seen corresponding path program 1 times
[2022-04-06 14:52:04,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION
[2022-04-06 14:52:04,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [46254219]
[2022-04-06 14:52:04,754 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-04-06 14:52:04,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1824143339, now seen corresponding path program 2 times
[2022-04-06 14:52:04,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 14:52:04,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032681345]
[2022-04-06 14:52:04,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 14:52:04,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 14:52:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 14:52:04,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-04-06 14:52:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 14:52:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-06 14:52:04,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 14:52:04,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032681345]
[2022-04-06 14:52:04,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032681345] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 14:52:04,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 14:52:04,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-04-06 14:52:04,824 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace
[2022-04-06 14:52:04,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [46254219]
[2022-04-06 14:52:04,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [46254219] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 14:52:04,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 14:52:04,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-04-06 14:52:04,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170415369]
[2022-04-06 14:52:04,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-06 14:52:04,825 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-04-06 14:52:04,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION
[2022-04-06 14:52:04,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-04-06 14:52:04,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-04-06 14:52:04,826 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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)
[2022-04-06 14:52:04,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 14:52:04,896 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions.
[2022-04-06 14:52:04,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-04-06 14:52:04,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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
[2022-04-06 14:52:04,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 14:52:04,899 INFO L225 Difference]: With dead ends: 34
[2022-04-06 14:52:04,900 INFO L226 Difference]: Without dead ends: 27
[2022-04-06 14:52:04,901 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-04-06 14:52:04,904 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 26 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-04-06 14:52:04,907 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 27 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-06 14:52:04,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2022-04-06 14:52:04,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21.
[2022-04-06 14:52:04,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-04-06 14:52:04,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions.
[2022-04-06 14:52:04,913 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 11
[2022-04-06 14:52:04,913 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 14:52:04,913 INFO L478 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions.
[2022-04-06 14:52:04,913 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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)
[2022-04-06 14:52:04,913 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions.
[2022-04-06 14:52:04,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-04-06 14:52:04,913 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 14:52:04,913 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 14:52:04,914 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-04-06 14:52:04,914 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 14:52:04,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 14:52:04,914 INFO L85 PathProgramCache]: Analyzing trace with hash -699512288, now seen corresponding path program 1 times
[2022-04-06 14:52:04,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION
[2022-04-06 14:52:04,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [886455137]
[2022-04-06 14:52:04,916 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-04-06 14:52:04,916 INFO L85 PathProgramCache]: Analyzing trace with hash -699512288, now seen corresponding path program 2 times
[2022-04-06 14:52:04,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 14:52:04,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097351768]
[2022-04-06 14:52:04,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 14:52:04,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 14:52:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 14:52:04,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-04-06 14:52:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 14:52:04,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-06 14:52:04,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 14:52:04,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097351768]
[2022-04-06 14:52:04,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097351768] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 14:52:04,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 14:52:04,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-04-06 14:52:04,966 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace
[2022-04-06 14:52:04,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [886455137]
[2022-04-06 14:52:04,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [886455137] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 14:52:04,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 14:52:04,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-04-06 14:52:04,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368425574]
[2022-04-06 14:52:04,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-06 14:52:04,967 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-04-06 14:52:04,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION
[2022-04-06 14:52:04,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-04-06 14:52:04,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-04-06 14:52:04,968 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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)
[2022-04-06 14:52:05,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 14:52:05,004 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions.
[2022-04-06 14:52:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-04-06 14:52:05,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 12
[2022-04-06 14:52:05,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 14:52:05,005 INFO L225 Difference]: With dead ends: 39
[2022-04-06 14:52:05,005 INFO L226 Difference]: Without dead ends: 25
[2022-04-06 14:52:05,006 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-04-06 14:52:05,006 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 21 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-04-06 14:52:05,007 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 27 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-06 14:52:05,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2022-04-06 14:52:05,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22.
[2022-04-06 14:52:05,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-04-06 14:52:05,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions.
[2022-04-06 14:52:05,011 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 12
[2022-04-06 14:52:05,011 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 14:52:05,011 INFO L478 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions.
[2022-04-06 14:52:05,012 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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)
[2022-04-06 14:52:05,012 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions.
[2022-04-06 14:52:05,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-04-06 14:52:05,012 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 14:52:05,012 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 14:52:05,012 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-04-06 14:52:05,012 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 14:52:05,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 14:52:05,013 INFO L85 PathProgramCache]: Analyzing trace with hash -185588926, now seen corresponding path program 1 times
[2022-04-06 14:52:05,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION
[2022-04-06 14:52:05,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1652329552]
[2022-04-06 14:52:05,013 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-04-06 14:52:05,013 INFO L85 PathProgramCache]: Analyzing trace with hash -185588926, now seen corresponding path program 2 times
[2022-04-06 14:52:05,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 14:52:05,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195745868]
[2022-04-06 14:52:05,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 14:52:05,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 14:52:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 14:52:05,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-04-06 14:52:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 14:52:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-06 14:52:05,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 14:52:05,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195745868]
[2022-04-06 14:52:05,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195745868] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 14:52:05,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 14:52:05,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-04-06 14:52:05,062 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace
[2022-04-06 14:52:05,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1652329552]
[2022-04-06 14:52:05,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1652329552] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 14:52:05,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 14:52:05,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-04-06 14:52:05,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092115008]
[2022-04-06 14:52:05,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-06 14:52:05,063 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-04-06 14:52:05,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION
[2022-04-06 14:52:05,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-04-06 14:52:05,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-04-06 14:52:05,064 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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)
[2022-04-06 14:52:05,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 14:52:05,094 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions.
[2022-04-06 14:52:05,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-04-06 14:52:05,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 13
[2022-04-06 14:52:05,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 14:52:05,095 INFO L225 Difference]: With dead ends: 39
[2022-04-06 14:52:05,095 INFO L226 Difference]: Without dead ends: 24
[2022-04-06 14:52:05,095 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-04-06 14:52:05,096 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 17 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-04-06 14:52:05,096 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 28 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-06 14:52:05,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2022-04-06 14:52:05,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23.
[2022-04-06 14:52:05,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-04-06 14:52:05,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions.
[2022-04-06 14:52:05,100 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 13
[2022-04-06 14:52:05,100 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 14:52:05,100 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions.
[2022-04-06 14:52:05,101 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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)
[2022-04-06 14:52:05,101 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions.
[2022-04-06 14:52:05,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2022-04-06 14:52:05,101 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 14:52:05,101 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 14:52:05,101 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-04-06 14:52:05,101 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 14:52:05,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 14:52:05,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1431986846, now seen corresponding path program 1 times
[2022-04-06 14:52:05,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION
[2022-04-06 14:52:05,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1806828661]
[2022-04-06 14:52:05,196 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult
[2022-04-06 14:52:05,197 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE
[2022-04-06 14:52:05,198 INFO L85 PathProgramCache]: Analyzing trace with hash -278509117, now seen corresponding path program 1 times
[2022-04-06 14:52:05,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 14:52:05,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465777127]
[2022-04-06 14:52:05,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 14:52:05,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 14:52:05,205 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-04-06 14:52:05,205 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception:
java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.<init>(TraceCheck.java:232)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.<init>(InterpolatingTraceCheck.java:91)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.<init>(InterpolatingTraceCheckCraig.java:89)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:85)
at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.runStrategy(AcceleratedInterpolationCore.java:300)
at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:289)
at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.<init>(AcceleratedInterpolation.java:190)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAcceleratedInterpolation.construct(IpTcStrategyModuleAcceleratedInterpolation.java:80)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:85)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:82)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:595)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:349)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:412)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:154)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms
at de.uni_freiburg.informatik.ultimate.logic.NoopScript.annotate(NoopScript.java:471)
at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282)
at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertTerm(AnnotateAndAssertCodeBlocks.java:192)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertNonCall(AnnotateAndAssertCodeBlocks.java:109)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:101)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:313)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.<init>(TraceCheck.java:211)
... 40 more
[2022-04-06 14:52:05,208 INFO L158 Benchmark]: Toolchain (without parser) took 1280.57ms. Allocated memory was 159.4MB in the beginning and 206.6MB in the end (delta: 47.2MB). Free memory was 104.1MB in the beginning and 106.5MB in the end (delta: -2.5MB). Peak memory consumption was 44.9MB. Max. memory is 8.0GB.
[2022-04-06 14:52:05,208 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 159.4MB. Free memory was 120.1MB in the beginning and 120.0MB in the end (delta: 72.6kB). There was no memory consumed. Max. memory is 8.0GB.
[2022-04-06 14:52:05,208 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.92ms. Allocated memory was 159.4MB in the beginning and 206.6MB in the end (delta: 47.2MB). Free memory was 103.9MB in the beginning and 181.0MB in the end (delta: -77.1MB). Peak memory consumption was 14.9MB. Max. memory is 8.0GB.
[2022-04-06 14:52:05,209 INFO L158 Benchmark]: Boogie Preprocessor took 49.28ms. Allocated memory is still 206.6MB. Free memory was 181.0MB in the beginning and 179.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-04-06 14:52:05,209 INFO L158 Benchmark]: RCFGBuilder took 253.86ms. Allocated memory is still 206.6MB. Free memory was 179.4MB in the beginning and 168.4MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB.
[2022-04-06 14:52:05,209 INFO L158 Benchmark]: TraceAbstraction took 801.15ms. Allocated memory is still 206.6MB. Free memory was 167.9MB in the beginning and 106.5MB in the end (delta: 61.3MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB.
[2022-04-06 14:52:05,210 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 159.4MB. Free memory was 120.1MB in the beginning and 120.0MB in the end (delta: 72.6kB). There was no memory consumed. Max. memory is 8.0GB.
* CACSL2BoogieTranslator took 171.92ms. Allocated memory was 159.4MB in the beginning and 206.6MB in the end (delta: 47.2MB). Free memory was 103.9MB in the beginning and 181.0MB in the end (delta: -77.1MB). Peak memory consumption was 14.9MB. Max. memory is 8.0GB.
* Boogie Preprocessor took 49.28ms. Allocated memory is still 206.6MB. Free memory was 181.0MB in the beginning and 179.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* RCFGBuilder took 253.86ms. Allocated memory is still 206.6MB. Free memory was 179.4MB in the beginning and 168.4MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB.
* TraceAbstraction took 801.15ms. Allocated memory is still 206.6MB. Free memory was 167.9MB in the beginning and 106.5MB in the end (delta: 61.3MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms
de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.<init>(TraceCheck.java:232)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
[2022-04-06 14:52:05,245 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...