/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-1.c
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This is Ultimate 0.1.25-d623d84
[2020-07-20 14:20:58,943 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-20 14:20:58,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-20 14:20:58,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-20 14:20:58,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-20 14:20:58,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-20 14:20:58,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-20 14:20:58,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-20 14:20:58,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-20 14:20:58,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-20 14:20:58,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-20 14:20:58,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-20 14:20:58,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-20 14:20:59,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-20 14:20:59,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-20 14:20:59,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-20 14:20:59,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-20 14:20:59,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-20 14:20:59,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-20 14:20:59,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-20 14:20:59,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-20 14:20:59,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-20 14:20:59,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-20 14:20:59,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-20 14:20:59,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-20 14:20:59,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-20 14:20:59,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-20 14:20:59,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-20 14:20:59,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-20 14:20:59,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-20 14:20:59,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-20 14:20:59,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-20 14:20:59,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-20 14:20:59,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-20 14:20:59,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-20 14:20:59,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-20 14:20:59,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-20 14:20:59,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-20 14:20:59,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-20 14:20:59,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-20 14:20:59,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-20 14:20:59,045 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-07-20 14:20:59,070 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-20 14:20:59,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-20 14:20:59,073 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-20 14:20:59,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-20 14:20:59,073 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-20 14:20:59,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-20 14:20:59,074 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-20 14:20:59,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-20 14:20:59,074 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-20 14:20:59,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-20 14:20:59,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-20 14:20:59,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-20 14:20:59,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-20 14:20:59,076 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-20 14:20:59,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-20 14:20:59,077 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-20 14:20:59,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-20 14:20:59,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-20 14:20:59,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-20 14:20:59,078 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-20 14:20:59,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-20 14:20:59,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 14:20:59,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-20 14:20:59,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-20 14:20:59,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-20 14:20:59,079 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-20 14:20:59,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 14:20:59,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-20 14:20:59,080 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-20 14:20:59,080 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4
[2020-07-20 14:20:59,433 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-20 14:20:59,448 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-20 14:20:59,452 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-20 14:20:59,453 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-20 14:20:59,454 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-20 14:20:59,455 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-1.c
[2020-07-20 14:20:59,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccd0ee635/c4aaa94c062a476eb1651c75bca86641/FLAG5efcaed4a
[2020-07-20 14:20:59,975 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-20 14:20:59,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_2-1.c
[2020-07-20 14:20:59,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccd0ee635/c4aaa94c062a476eb1651c75bca86641/FLAG5efcaed4a
[2020-07-20 14:21:00,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccd0ee635/c4aaa94c062a476eb1651c75bca86641
[2020-07-20 14:21:00,350 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-20 14:21:00,354 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-20 14:21:00,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-20 14:21:00,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-20 14:21:00,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-20 14:21:00,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:21:00" (1/1) ...
[2020-07-20 14:21:00,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a926594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:21:00, skipping insertion in model container
[2020-07-20 14:21:00,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:21:00" (1/1) ...
[2020-07-20 14:21:00,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-20 14:21:00,402 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-20 14:21:00,595 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 14:21:00,600 INFO L203 MainTranslator]: Completed pre-run
[2020-07-20 14:21:00,617 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 14:21:00,633 INFO L208 MainTranslator]: Completed translation
[2020-07-20 14:21:00,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:21:00 WrapperNode
[2020-07-20 14:21:00,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-20 14:21:00,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-20 14:21:00,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-20 14:21:00,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-20 14:21:00,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:21:00" (1/1) ...
[2020-07-20 14:21:00,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:21:00" (1/1) ...
[2020-07-20 14:21:00,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:21:00" (1/1) ...
[2020-07-20 14:21:00,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:21:00" (1/1) ...
[2020-07-20 14:21:00,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:21:00" (1/1) ...
[2020-07-20 14:21:00,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:21:00" (1/1) ...
[2020-07-20 14:21:00,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:21:00" (1/1) ...
[2020-07-20 14:21:00,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-20 14:21:00,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-20 14:21:00,763 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-20 14:21:00,763 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-20 14:21:00,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:21:00" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 14:21:00,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-20 14:21:00,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-20 14:21:00,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-07-20 14:21:00,820 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-20 14:21:00,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-20 14:21:00,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-07-20 14:21:00,821 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-20 14:21:00,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-20 14:21:00,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-20 14:21:01,018 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-20 14:21:01,019 INFO L295 CfgBuilder]: Removed 1 assume(true) statements.
[2020-07-20 14:21:01,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:21:01 BoogieIcfgContainer
[2020-07-20 14:21:01,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-20 14:21:01,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-20 14:21:01,024 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-20 14:21:01,028 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-20 14:21:01,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:21:00" (1/3) ...
[2020-07-20 14:21:01,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79112314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:21:01, skipping insertion in model container
[2020-07-20 14:21:01,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:21:00" (2/3) ...
[2020-07-20 14:21:01,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79112314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:21:01, skipping insertion in model container
[2020-07-20 14:21:01,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:21:01" (3/3) ...
[2020-07-20 14:21:01,032 INFO L109 eAbstractionObserver]: Analyzing ICFG underapprox_2-1.c
[2020-07-20 14:21:01,044 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-20 14:21:01,052 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-20 14:21:01,066 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-20 14:21:01,089 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-20 14:21:01,090 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-20 14:21:01,090 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-20 14:21:01,090 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-20 14:21:01,090 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-20 14:21:01,090 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-20 14:21:01,091 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-20 14:21:01,091 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-20 14:21:01,108 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states.
[2020-07-20 14:21:01,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-07-20 14:21:01,113 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 14:21:01,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 14:21:01,114 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 14:21:01,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 14:21:01,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times
[2020-07-20 14:21:01,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 14:21:01,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128817784]
[2020-07-20 14:21:01,127 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 14:21:01,222 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s)
[2020-07-20 14:21:01,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 14:21:01,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 3 conjunts are in the unsatisfiable core
[2020-07-20 14:21:01,230 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 14:21:01,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 14:21:01,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 14:21:01,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128817784]
[2020-07-20 14:21:01,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 14:21:01,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-20 14:21:01,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327987856]
[2020-07-20 14:21:01,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-20 14:21:01,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 14:21:01,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-20 14:21:01,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-20 14:21:01,291 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states.
[2020-07-20 14:21:01,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 14:21:01,338 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions.
[2020-07-20 14:21:01,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-07-20 14:21:01,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10
[2020-07-20 14:21:01,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 14:21:01,350 INFO L225 Difference]: With dead ends: 29
[2020-07-20 14:21:01,350 INFO L226 Difference]: Without dead ends: 12
[2020-07-20 14:21:01,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-20 14:21:01,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states.
[2020-07-20 14:21:01,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12.
[2020-07-20 14:21:01,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states.
[2020-07-20 14:21:01,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions.
[2020-07-20 14:21:01,423 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10
[2020-07-20 14:21:01,424 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 14:21:01,424 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions.
[2020-07-20 14:21:01,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-20 14:21:01,424 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions.
[2020-07-20 14:21:01,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-07-20 14:21:01,425 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 14:21:01,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 14:21:01,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 14:21:01,641 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 14:21:01,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 14:21:01,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1432376145, now seen corresponding path program 1 times
[2020-07-20 14:21:01,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 14:21:01,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807453089]
[2020-07-20 14:21:01,644 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 14:21:01,670 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-20 14:21:01,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 14:21:01,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 5 conjunts are in the unsatisfiable core
[2020-07-20 14:21:01,674 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 14:21:01,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 14:21:01,696 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 14:21:01,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 14:21:01,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807453089]
[2020-07-20 14:21:01,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 14:21:01,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6
[2020-07-20 14:21:01,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558831482]
[2020-07-20 14:21:01,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-07-20 14:21:01,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 14:21:01,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-07-20 14:21:01,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-07-20 14:21:01,753 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states.
[2020-07-20 14:21:01,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 14:21:01,814 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions.
[2020-07-20 14:21:01,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-07-20 14:21:01,815 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11
[2020-07-20 14:21:01,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 14:21:01,816 INFO L225 Difference]: With dead ends: 20
[2020-07-20 14:21:01,816 INFO L226 Difference]: Without dead ends: 15
[2020-07-20 14:21:01,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42
[2020-07-20 14:21:01,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2020-07-20 14:21:01,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15.
[2020-07-20 14:21:01,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states.
[2020-07-20 14:21:01,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions.
[2020-07-20 14:21:01,823 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11
[2020-07-20 14:21:01,823 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 14:21:01,824 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions.
[2020-07-20 14:21:01,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-07-20 14:21:01,824 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions.
[2020-07-20 14:21:01,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-07-20 14:21:01,825 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 14:21:01,825 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 14:21:02,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 14:21:02,041 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 14:21:02,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 14:21:02,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1031021570, now seen corresponding path program 2 times
[2020-07-20 14:21:02,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 14:21:02,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679968502]
[2020-07-20 14:21:02,044 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 14:21:02,089 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-20 14:21:02,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 14:21:02,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-07-20 14:21:02,093 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 14:21:02,161 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 14:21:02,161 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 14:21:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 14:21:02,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679968502]
[2020-07-20 14:21:02,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 14:21:02,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2020-07-20 14:21:02,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157321760]
[2020-07-20 14:21:02,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-07-20 14:21:02,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 14:21:02,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-07-20 14:21:02,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-07-20 14:21:02,270 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 12 states.
[2020-07-20 14:21:02,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 14:21:02,327 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions.
[2020-07-20 14:21:02,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2020-07-20 14:21:02,328 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14
[2020-07-20 14:21:02,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 14:21:02,329 INFO L225 Difference]: With dead ends: 22
[2020-07-20 14:21:02,329 INFO L226 Difference]: Without dead ends: 17
[2020-07-20 14:21:02,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-07-20 14:21:02,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2020-07-20 14:21:02,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17.
[2020-07-20 14:21:02,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states.
[2020-07-20 14:21:02,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions.
[2020-07-20 14:21:02,336 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14
[2020-07-20 14:21:02,337 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 14:21:02,337 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions.
[2020-07-20 14:21:02,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-07-20 14:21:02,337 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions.
[2020-07-20 14:21:02,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-07-20 14:21:02,338 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 14:21:02,338 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 14:21:02,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 14:21:02,552 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 14:21:02,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 14:21:02,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1802490274, now seen corresponding path program 3 times
[2020-07-20 14:21:02,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 14:21:02,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496347938]
[2020-07-20 14:21:02,555 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 14:21:02,590 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-20 14:21:02,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat
[2020-07-20 14:21:02,590 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 14:21:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-20 14:21:02,601 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 14:21:02,617 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-20 14:21:02,617 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-07-20 14:21:02,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 14:21:02,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:21:02 BoogieIcfgContainer
[2020-07-20 14:21:02,859 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-20 14:21:02,862 INFO L168 Benchmark]: Toolchain (without parser) took 2508.75 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 105.3 MB in the beginning and 102.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 59.4 MB. Max. memory is 7.1 GB.
[2020-07-20 14:21:02,863 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 147.3 MB. Free memory was 123.5 MB in the beginning and 123.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
[2020-07-20 14:21:02,864 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.95 ms. Allocated memory is still 147.3 MB. Free memory was 104.9 MB in the beginning and 95.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB.
[2020-07-20 14:21:02,865 INFO L168 Benchmark]: Boogie Preprocessor took 127.38 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 95.6 MB in the beginning and 182.8 MB in the end (delta: -87.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB.
[2020-07-20 14:21:02,866 INFO L168 Benchmark]: RCFGBuilder took 260.69 ms. Allocated memory is still 203.4 MB. Free memory was 182.8 MB in the beginning and 171.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB.
[2020-07-20 14:21:02,867 INFO L168 Benchmark]: TraceAbstraction took 1834.74 ms. Allocated memory is still 203.4 MB. Free memory was 170.4 MB in the beginning and 102.0 MB in the end (delta: 68.3 MB). Peak memory consumption was 68.3 MB. Max. memory is 7.1 GB.
[2020-07-20 14:21:02,871 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.24 ms. Allocated memory is still 147.3 MB. Free memory was 123.5 MB in the beginning and 123.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 274.95 ms. Allocated memory is still 147.3 MB. Free memory was 104.9 MB in the beginning and 95.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 127.38 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 95.6 MB in the beginning and 182.8 MB in the end (delta: -87.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 260.69 ms. Allocated memory is still 203.4 MB. Free memory was 182.8 MB in the beginning and 171.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1834.74 ms. Allocated memory is still 203.4 MB. Free memory was 170.4 MB in the beginning and 102.0 MB in the end (delta: 68.3 MB). Peak memory consumption was 68.3 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L11] unsigned int x = 0;
[L12] unsigned int y = 1;
VAL [x=0, y=1]
[L14] COND TRUE x < 6
[L15] x++
[L16] y *= 2
VAL [x=1, y=2]
[L14] COND TRUE x < 6
[L15] x++
[L16] y *= 2
VAL [x=2, y=4]
[L14] COND TRUE x < 6
[L15] x++
[L16] y *= 2
VAL [x=3, y=8]
[L14] COND TRUE x < 6
[L15] x++
[L16] y *= 2
VAL [x=4, y=16]
[L14] COND TRUE x < 6
[L15] x++
[L16] y *= 2
VAL [x=5, y=32]
[L14] COND TRUE x < 6
[L15] x++
[L16] y *= 2
VAL [x=6, y=64]
[L14] COND FALSE !(x < 6)
VAL [x=6, y=64]
[L19] CALL __VERIFIER_assert(x != 6)
VAL [\old(cond)=0]
[L4] COND TRUE !(cond)
VAL [\old(cond)=0, cond=0]
[L5] __VERIFIER_error()
VAL [\old(cond)=0, cond=0]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 6, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 0 SDslu, 94 SDs, 0 SdLazy, 57 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 51 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 1271 SizeOfPredicates, 3 NumberOfNonLiveVariables, 65 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/22 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...