/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_VARIABLES --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/ldv-regression/1_3.i
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This is Ultimate 0.1.25-d623d84
[2020-07-20 17:13:18,810 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-20 17:13:18,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-20 17:13:18,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-20 17:13:18,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-20 17:13:18,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-20 17:13:18,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-20 17:13:18,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-20 17:13:18,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-20 17:13:18,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-20 17:13:18,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-20 17:13:18,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-20 17:13:18,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-20 17:13:18,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-20 17:13:18,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-20 17:13:18,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-20 17:13:18,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-20 17:13:18,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-20 17:13:18,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-20 17:13:18,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-20 17:13:18,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-20 17:13:18,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-20 17:13:18,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-20 17:13:18,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-20 17:13:18,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-20 17:13:18,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-20 17:13:18,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-20 17:13:18,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-20 17:13:18,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-20 17:13:18,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-20 17:13:18,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-20 17:13:18,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-20 17:13:18,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
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[2020-07-20 17:13:18,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
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[2020-07-20 17:13:18,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2020-07-20 17:13:18,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-20 17:13:18,920 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 17:13:18,946 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-20 17:13:18,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-20 17:13:18,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-20 17:13:18,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-20 17:13:18,950 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-20 17:13:18,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-20 17:13:18,950 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-20 17:13:18,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-20 17:13:18,951 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-20 17:13:18,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-20 17:13:18,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-20 17:13:18,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-20 17:13:18,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-20 17:13:18,953 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-20 17:13:18,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-20 17:13:18,953 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-20 17:13:18,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-20 17:13:18,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-20 17:13:18,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-20 17:13:18,954 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-20 17:13:18,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-20 17:13:18,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 17:13:18,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-20 17:13:18,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-20 17:13:18,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-20 17:13:18,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-20 17:13:18,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 17:13:18,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-20 17:13:18,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-20 17:13:18,956 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_VARIABLES
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 17:13:19,270 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-20 17:13:19,287 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-20 17:13:19,291 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-20 17:13:19,293 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-20 17:13:19,293 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-20 17:13:19,294 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/1_3.i
[2020-07-20 17:13:19,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42f457fdf/c997736c3b2a4427ae3bd133382ef2ee/FLAG80b8d0223
[2020-07-20 17:13:19,954 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-20 17:13:19,955 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/1_3.i
[2020-07-20 17:13:19,963 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42f457fdf/c997736c3b2a4427ae3bd133382ef2ee/FLAG80b8d0223
[2020-07-20 17:13:20,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42f457fdf/c997736c3b2a4427ae3bd133382ef2ee
[2020-07-20 17:13:20,318 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-20 17:13:20,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-20 17:13:20,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-20 17:13:20,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-20 17:13:20,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-20 17:13:20,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:13:20" (1/1) ...
[2020-07-20 17:13:20,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5115eb38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:13:20, skipping insertion in model container
[2020-07-20 17:13:20,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:13:20" (1/1) ...
[2020-07-20 17:13:20,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-20 17:13:20,370 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-20 17:13:20,581 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 17:13:20,594 INFO L203 MainTranslator]: Completed pre-run
[2020-07-20 17:13:20,614 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 17:13:20,632 INFO L208 MainTranslator]: Completed translation
[2020-07-20 17:13:20,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:13:20 WrapperNode
[2020-07-20 17:13:20,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-20 17:13:20,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-20 17:13:20,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-20 17:13:20,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-20 17:13:20,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:13:20" (1/1) ...
[2020-07-20 17:13:20,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:13:20" (1/1) ...
[2020-07-20 17:13:20,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:13:20" (1/1) ...
[2020-07-20 17:13:20,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:13:20" (1/1) ...
[2020-07-20 17:13:20,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:13:20" (1/1) ...
[2020-07-20 17:13:20,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:13:20" (1/1) ...
[2020-07-20 17:13:20,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:13:20" (1/1) ...
[2020-07-20 17:13:20,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-20 17:13:20,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-20 17:13:20,793 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-20 17:13:20,793 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-20 17:13:20,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:13:20" (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 17:13:20,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-20 17:13:20,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-20 17:13:20,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert
[2020-07-20 17:13:20,863 INFO L138 BoogieDeclarations]: Found implementation of procedure getrr
[2020-07-20 17:13:20,864 INFO L138 BoogieDeclarations]: Found implementation of procedure getPtr
[2020-07-20 17:13:20,864 INFO L138 BoogieDeclarations]: Found implementation of procedure freePtr
[2020-07-20 17:13:20,864 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-20 17:13:20,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-20 17:13:20,864 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert
[2020-07-20 17:13:20,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-07-20 17:13:20,865 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2020-07-20 17:13:20,865 INFO L130 BoogieDeclarations]: Found specification of procedure getrr
[2020-07-20 17:13:20,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-07-20 17:13:20,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-07-20 17:13:20,865 INFO L130 BoogieDeclarations]: Found specification of procedure getPtr
[2020-07-20 17:13:20,866 INFO L130 BoogieDeclarations]: Found specification of procedure freePtr
[2020-07-20 17:13:20,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-07-20 17:13:20,866 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-20 17:13:20,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-20 17:13:20,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-20 17:13:20,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-20 17:13:21,120 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-20 17:13:21,121 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-07-20 17:13:21,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:13:21 BoogieIcfgContainer
[2020-07-20 17:13:21,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-20 17:13:21,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-20 17:13:21,129 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-20 17:13:21,133 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-20 17:13:21,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:13:20" (1/3) ...
[2020-07-20 17:13:21,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de413da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:13:21, skipping insertion in model container
[2020-07-20 17:13:21,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:13:20" (2/3) ...
[2020-07-20 17:13:21,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de413da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:13:21, skipping insertion in model container
[2020-07-20 17:13:21,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:13:21" (3/3) ...
[2020-07-20 17:13:21,139 INFO L109 eAbstractionObserver]: Analyzing ICFG 1_3.i
[2020-07-20 17:13:21,160 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-20 17:13:21,175 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-20 17:13:21,200 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-20 17:13:21,256 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-20 17:13:21,257 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-20 17:13:21,257 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-20 17:13:21,257 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-20 17:13:21,258 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-20 17:13:21,258 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-20 17:13:21,258 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-20 17:13:21,259 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-20 17:13:21,291 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states.
[2020-07-20 17:13:21,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-07-20 17:13:21,300 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 17:13:21,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 17:13:21,302 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 17:13:21,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 17:13:21,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1862665640, now seen corresponding path program 1 times
[2020-07-20 17:13:21,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 17:13:21,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450578640]
[2020-07-20 17:13:21,325 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 17:13:21,480 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-20 17:13:21,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 17:13:21,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 26 conjunts are in the unsatisfiable core
[2020-07-20 17:13:21,494 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 17:13:21,577 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2020-07-20 17:13:21,578 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 17:13:21,588 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 17:13:21,589 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 17:13:21,589 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7
[2020-07-20 17:13:21,688 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2020-07-20 17:13:21,690 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 17:13:21,696 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 17:13:21,697 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 17:13:21,698 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3
[2020-07-20 17:13:21,715 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 17:13:21,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 17:13:21,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450578640]
[2020-07-20 17:13:21,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 17:13:21,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-07-20 17:13:21,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501334621]
[2020-07-20 17:13:21,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-07-20 17:13:21,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 17:13:21,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-07-20 17:13:21,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2020-07-20 17:13:21,745 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 7 states.
[2020-07-20 17:13:21,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 17:13:21,882 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions.
[2020-07-20 17:13:21,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2020-07-20 17:13:21,885 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20
[2020-07-20 17:13:21,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 17:13:21,896 INFO L225 Difference]: With dead ends: 49
[2020-07-20 17:13:21,896 INFO L226 Difference]: Without dead ends: 27
[2020-07-20 17:13:21,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2020-07-20 17:13:21,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2020-07-20 17:13:21,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2020-07-20 17:13:21,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2020-07-20 17:13:21,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions.
[2020-07-20 17:13:21,956 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 20
[2020-07-20 17:13:21,957 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 17:13:21,957 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions.
[2020-07-20 17:13:21,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-07-20 17:13:21,957 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions.
[2020-07-20 17:13:21,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-07-20 17:13:21,959 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 17:13:21,959 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 17:13:22,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 17:13:22,175 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 17:13:22,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 17:13:22,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1146014323, now seen corresponding path program 1 times
[2020-07-20 17:13:22,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 17:13:22,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044470988]
[2020-07-20 17:13:22,178 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 17:13:22,264 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-20 17:13:22,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat
[2020-07-20 17:13:22,265 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 17:13:22,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-20 17:13:22,292 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 17:13:22,321 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-20 17:13:22,322 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-07-20 17:13:22,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 17:13:22,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:13:22 BoogieIcfgContainer
[2020-07-20 17:13:22,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-20 17:13:22,578 INFO L168 Benchmark]: Toolchain (without parser) took 2258.01 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 101.2 MB in the beginning and 108.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 50.3 MB. Max. memory is 7.1 GB.
[2020-07-20 17:13:22,579 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 145.2 MB. Free memory was 120.2 MB in the beginning and 119.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB.
[2020-07-20 17:13:22,580 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.28 ms. Allocated memory is still 145.2 MB. Free memory was 100.8 MB in the beginning and 90.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
[2020-07-20 17:13:22,581 INFO L168 Benchmark]: Boogie Preprocessor took 157.26 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 90.9 MB in the beginning and 181.1 MB in the end (delta: -90.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB.
[2020-07-20 17:13:22,582 INFO L168 Benchmark]: RCFGBuilder took 333.71 ms. Allocated memory is still 202.9 MB. Free memory was 181.1 MB in the beginning and 166.5 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB.
[2020-07-20 17:13:22,583 INFO L168 Benchmark]: TraceAbstraction took 1447.51 ms. Allocated memory is still 202.9 MB. Free memory was 165.8 MB in the beginning and 108.6 MB in the end (delta: 57.2 MB). Peak memory consumption was 57.2 MB. Max. memory is 7.1 GB.
[2020-07-20 17:13:22,587 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.27 ms. Allocated memory is still 145.2 MB. Free memory was 120.2 MB in the beginning and 119.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 310.28 ms. Allocated memory is still 145.2 MB. Free memory was 100.8 MB in the beginning and 90.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 157.26 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 90.9 MB in the beginning and 181.1 MB in the end (delta: -90.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 333.71 ms. Allocated memory is still 202.9 MB. Free memory was 181.1 MB in the beginning and 166.5 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1447.51 ms. Allocated memory is still 202.9 MB. Free memory was 165.8 MB in the beginning and 108.6 MB in the end (delta: 57.2 MB). Peak memory consumption was 57.2 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L50] rr * ptr1 = 0;
VAL [ptr1={0:0}]
[L51] CALL, EXPR getPtr()
[L37] CALL, EXPR getrr()
[L30] rr * r = (rr *)malloc(sizeof *r);
[L31] r -> state = 0
[L32] return r;
VAL [\result={-1:0}, malloc(sizeof *r)={-1:0}, r={-1:0}]
[L37] RET, EXPR getrr()
VAL [getrr()={-1:0}]
[L37] rr * r = getrr();
[L38] r -> state = 1
[L39] return r;
VAL [\result={-1:0}, r={-1:0}]
[L51] RET, EXPR getPtr()
VAL [getPtr()={-1:0}, ptr1={0:0}]
[L51] ptr1 = getPtr()
[L52] CALL freePtr(ptr1)
VAL [ptr={-1:0}]
[L44] EXPR ptr -> state
VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=1]
[L44] (ptr -> state == 1) ? (0) : __blast_assert ()
VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=1]
[L45] ptr -> state = 2
VAL [ptr={-1:0}, ptr={-1:0}]
[L52] RET freePtr(ptr1)
VAL [ptr1={-1:0}]
[L54] CALL freePtr(ptr1)
VAL [ptr={-1:0}]
[L44] EXPR ptr -> state
VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=2]
[L44] (ptr -> state == 1) ? (0) : __blast_assert ()
VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=2]
[L44] CALL __blast_assert ()
[L6] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 7 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 3 SDslu, 110 SDs, 0 SdLazy, 38 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 969 SizeOfPredicates, 8 NumberOfNonLiveVariables, 103 ConjunctsInSsa, 26 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...