/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 BIGGEST_EQUIVALENCE_CLASS --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/loops/trex01-1.c
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This is Ultimate 0.1.25-d623d84
[2020-07-21 01:43:15,158 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-21 01:43:15,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-21 01:43:15,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-21 01:43:15,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-21 01:43:15,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-21 01:43:15,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-21 01:43:15,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-21 01:43:15,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-21 01:43:15,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-21 01:43:15,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-21 01:43:15,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-21 01:43:15,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-21 01:43:15,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-21 01:43:15,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-21 01:43:15,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-21 01:43:15,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-21 01:43:15,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-21 01:43:15,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-21 01:43:15,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-21 01:43:15,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-21 01:43:15,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-21 01:43:15,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-21 01:43:15,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-21 01:43:15,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-21 01:43:15,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-21 01:43:15,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-21 01:43:15,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-21 01:43:15,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-21 01:43:15,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-21 01:43:15,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-21 01:43:15,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-21 01:43:15,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-21 01:43:15,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-21 01:43:15,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-21 01:43:15,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-21 01:43:15,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-21 01:43:15,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-21 01:43:15,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-21 01:43:15,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-21 01:43:15,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-21 01:43:15,250 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
[2020-07-21 01:43:15,273 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-21 01:43:15,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-21 01:43:15,276 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-21 01:43:15,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-21 01:43:15,277 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-21 01:43:15,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-21 01:43:15,277 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-21 01:43:15,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-21 01:43:15,278 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-21 01:43:15,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-21 01:43:15,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-21 01:43:15,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-21 01:43:15,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-21 01:43:15,279 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-21 01:43:15,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-21 01:43:15,279 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-21 01:43:15,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-21 01:43:15,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-21 01:43:15,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-21 01:43:15,280 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-21 01:43:15,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-21 01:43:15,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-21 01:43:15,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-21 01:43:15,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-21 01:43:15,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-21 01:43:15,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-21 01:43:15,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 01:43:15,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-21 01:43:15,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-21 01:43:15,282 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 -> BIGGEST_EQUIVALENCE_CLASS
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
[2020-07-21 01:43:15,701 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-21 01:43:15,722 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-21 01:43:15,728 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-21 01:43:15,731 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-21 01:43:15,732 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-21 01:43:15,733 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex01-1.c
[2020-07-21 01:43:15,842 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d939c8fd/d332ccd6f65e4f80806f6df4bf42fb9b/FLAG380a10f00
[2020-07-21 01:43:16,594 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-21 01:43:16,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex01-1.c
[2020-07-21 01:43:16,612 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d939c8fd/d332ccd6f65e4f80806f6df4bf42fb9b/FLAG380a10f00
[2020-07-21 01:43:16,889 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d939c8fd/d332ccd6f65e4f80806f6df4bf42fb9b
[2020-07-21 01:43:16,908 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-21 01:43:16,912 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-21 01:43:16,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-21 01:43:16,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-21 01:43:16,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-21 01:43:16,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:43:16" (1/1) ...
[2020-07-21 01:43:16,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@612f78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:43:16, skipping insertion in model container
[2020-07-21 01:43:16,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:43:16" (1/1) ...
[2020-07-21 01:43:16,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-21 01:43:16,969 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-21 01:43:17,216 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-21 01:43:17,224 INFO L203 MainTranslator]: Completed pre-run
[2020-07-21 01:43:17,251 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-21 01:43:17,273 INFO L208 MainTranslator]: Completed translation
[2020-07-21 01:43:17,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:43:17 WrapperNode
[2020-07-21 01:43:17,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-21 01:43:17,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-21 01:43:17,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-21 01:43:17,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-21 01:43:17,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:43:17" (1/1) ...
[2020-07-21 01:43:17,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:43:17" (1/1) ...
[2020-07-21 01:43:17,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:43:17" (1/1) ...
[2020-07-21 01:43:17,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:43:17" (1/1) ...
[2020-07-21 01:43:17,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:43:17" (1/1) ...
[2020-07-21 01:43:17,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:43:17" (1/1) ...
[2020-07-21 01:43:17,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:43:17" (1/1) ...
[2020-07-21 01:43:17,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-21 01:43:17,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-21 01:43:17,438 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-21 01:43:17,438 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-21 01:43:17,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:43:17" (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
[2020-07-21 01:43:17,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-21 01:43:17,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-21 01:43:17,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-07-21 01:43:17,556 INFO L138 BoogieDeclarations]: Found implementation of procedure f
[2020-07-21 01:43:17,556 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-21 01:43:17,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-21 01:43:17,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-07-21 01:43:17,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-07-21 01:43:17,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-07-21 01:43:17,559 INFO L130 BoogieDeclarations]: Found specification of procedure f
[2020-07-21 01:43:17,560 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-21 01:43:17,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-21 01:43:17,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-21 01:43:17,889 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-21 01:43:17,889 INFO L295 CfgBuilder]: Removed 2 assume(true) statements.
[2020-07-21 01:43:17,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:43:17 BoogieIcfgContainer
[2020-07-21 01:43:17,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-21 01:43:17,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-21 01:43:17,898 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-21 01:43:17,904 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-21 01:43:17,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:43:16" (1/3) ...
[2020-07-21 01:43:17,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f2c8556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:43:17, skipping insertion in model container
[2020-07-21 01:43:17,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:43:17" (2/3) ...
[2020-07-21 01:43:17,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f2c8556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:43:17, skipping insertion in model container
[2020-07-21 01:43:17,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:43:17" (3/3) ...
[2020-07-21 01:43:17,913 INFO L109 eAbstractionObserver]: Analyzing ICFG trex01-1.c
[2020-07-21 01:43:17,930 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-21 01:43:17,954 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-21 01:43:17,974 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-21 01:43:18,004 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-21 01:43:18,004 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-21 01:43:18,004 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-21 01:43:18,005 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-21 01:43:18,005 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-21 01:43:18,005 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-21 01:43:18,005 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-21 01:43:18,006 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-21 01:43:18,030 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states.
[2020-07-21 01:43:18,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-07-21 01:43:18,043 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-21 01:43:18,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 01:43:18,044 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 01:43:18,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 01:43:18,051 INFO L82 PathProgramCache]: Analyzing trace with hash -355556993, now seen corresponding path program 1 times
[2020-07-21 01:43:18,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 01:43:18,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943242461]
[2020-07-21 01:43:18,061 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
[2020-07-21 01:43:18,129 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-21 01:43:18,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 01:43:18,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core
[2020-07-21 01:43:18,137 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 01:43:18,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 01:43:18,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 01:43:18,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943242461]
[2020-07-21 01:43:18,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 01:43:18,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-07-21 01:43:18,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360663368]
[2020-07-21 01:43:18,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-07-21 01:43:18,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 01:43:18,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-07-21 01:43:18,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-21 01:43:18,177 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states.
[2020-07-21 01:43:18,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 01:43:18,202 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions.
[2020-07-21 01:43:18,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2020-07-21 01:43:18,204 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14
[2020-07-21 01:43:18,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 01:43:18,214 INFO L225 Difference]: With dead ends: 45
[2020-07-21 01:43:18,215 INFO L226 Difference]: Without dead ends: 16
[2020-07-21 01:43:18,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-21 01:43:18,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2020-07-21 01:43:18,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16.
[2020-07-21 01:43:18,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2020-07-21 01:43:18,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions.
[2020-07-21 01:43:18,263 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14
[2020-07-21 01:43:18,263 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-21 01:43:18,263 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions.
[2020-07-21 01:43:18,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-07-21 01:43:18,264 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions.
[2020-07-21 01:43:18,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-07-21 01:43:18,264 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-21 01:43:18,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 01:43:18,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 01:43:18,481 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 01:43:18,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 01:43:18,482 INFO L82 PathProgramCache]: Analyzing trace with hash -359251077, now seen corresponding path program 1 times
[2020-07-21 01:43:18,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 01:43:18,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623167359]
[2020-07-21 01:43:18,484 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
[2020-07-21 01:43:18,541 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-21 01:43:18,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat
[2020-07-21 01:43:18,542 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 01:43:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-21 01:43:18,557 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 01:43:18,580 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-21 01:43:18,581 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-07-21 01:43:18,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 01:43:18,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:43:18 BoogieIcfgContainer
[2020-07-21 01:43:18,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-21 01:43:18,838 INFO L168 Benchmark]: Toolchain (without parser) took 1926.35 ms. Allocated memory was 135.8 MB in the beginning and 200.8 MB in the end (delta: 65.0 MB). Free memory was 99.4 MB in the beginning and 136.6 MB in the end (delta: -37.3 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB.
[2020-07-21 01:43:18,839 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 135.8 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-07-21 01:43:18,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.17 ms. Allocated memory is still 135.8 MB. Free memory was 99.0 MB in the beginning and 89.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB.
[2020-07-21 01:43:18,841 INFO L168 Benchmark]: Boogie Preprocessor took 161.08 ms. Allocated memory was 135.8 MB in the beginning and 200.8 MB in the end (delta: 65.0 MB). Free memory was 89.3 MB in the beginning and 180.9 MB in the end (delta: -91.5 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB.
[2020-07-21 01:43:18,842 INFO L168 Benchmark]: RCFGBuilder took 458.86 ms. Allocated memory is still 200.8 MB. Free memory was 180.9 MB in the beginning and 165.9 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB.
[2020-07-21 01:43:18,843 INFO L168 Benchmark]: TraceAbstraction took 936.47 ms. Allocated memory is still 200.8 MB. Free memory was 165.9 MB in the beginning and 136.6 MB in the end (delta: 29.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB.
[2020-07-21 01:43:18,848 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.62 ms. Allocated memory is still 135.8 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 361.17 ms. Allocated memory is still 135.8 MB. Free memory was 99.0 MB in the beginning and 89.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 161.08 ms. Allocated memory was 135.8 MB in the beginning and 200.8 MB in the end (delta: 65.0 MB). Free memory was 89.3 MB in the beginning and 180.9 MB in the end (delta: -91.5 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 458.86 ms. Allocated memory is still 200.8 MB. Free memory was 180.9 MB in the beginning and 165.9 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 936.47 ms. Allocated memory is still 200.8 MB. Free memory was 165.9 MB in the beginning and 136.6 MB in the end (delta: 29.3 MB). Peak memory consumption was 29.3 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:
[L34] _Bool c = __VERIFIER_nondet_bool();
[L35] COND FALSE !(\read(c))
VAL [c=0]
[L38] CALL f(2)
VAL [\old(d)=2]
[L13] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1;
[L13] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1;
[L13] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1;
[L13] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1;
VAL [\old(d)=2, d=2, k=0, x=0, y=0, z=1]
[L14] COND FALSE !(!(k <= 1073741823))
VAL [\old(d)=2, d=2, k=0, x=0, y=0, z=1]
[L17] COND FALSE !(z < k)
VAL [\old(d)=2, d=2, k=0, x=0, y=0, z=1]
[L18] CALL __VERIFIER_assert(z>=2)
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 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 42 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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...