java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_true-valid-memsafety.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ccafca9-m [2018-02-04 04:41:41,745 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 04:41:41,747 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 04:41:41,760 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 04:41:41,760 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 04:41:41,760 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 04:41:41,761 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 04:41:41,763 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 04:41:41,764 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 04:41:41,765 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 04:41:41,766 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 04:41:41,766 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 04:41:41,767 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 04:41:41,768 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 04:41:41,769 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 04:41:41,770 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 04:41:41,772 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 04:41:41,773 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 04:41:41,774 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 04:41:41,775 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 04:41:41,777 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 04:41:41,781 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 04:41:41,781 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 04:41:41,781 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf [2018-02-04 04:41:41,791 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 04:41:41,791 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 04:41:41,792 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 04:41:41,792 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 04:41:41,792 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 04:41:41,792 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 04:41:41,793 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 04:41:41,793 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 04:41:41,793 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 04:41:41,793 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 04:41:41,793 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 04:41:41,793 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 04:41:41,793 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 04:41:41,793 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-04 04:41:41,793 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 04:41:41,793 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 04:41:41,793 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 04:41:41,794 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 04:41:41,794 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 04:41:41,794 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 04:41:41,794 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 04:41:41,794 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 04:41:41,794 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-02-04 04:41:41,794 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-02-04 04:41:41,794 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:41:41,823 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 04:41:41,832 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 04:41:41,835 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 04:41:41,836 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 04:41:41,837 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 04:41:41,837 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_true-valid-memsafety.c [2018-02-04 04:41:41,935 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 04:41:41,936 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 04:41:41,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 04:41:41,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 04:41:41,942 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 04:41:41,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:41:41" (1/1) ... [2018-02-04 04:41:41,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26458554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:41:41, skipping insertion in model container [2018-02-04 04:41:41,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:41:41" (1/1) ... [2018-02-04 04:41:41,957 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:41:41,970 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:41:42,061 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:41:42,074 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:41:42,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:41:42 WrapperNode [2018-02-04 04:41:42,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 04:41:42,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 04:41:42,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 04:41:42,078 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 04:41:42,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:41:42" (1/1) ... [2018-02-04 04:41:42,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:41:42" (1/1) ... [2018-02-04 04:41:42,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:41:42" (1/1) ... [2018-02-04 04:41:42,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:41:42" (1/1) ... [2018-02-04 04:41:42,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:41:42" (1/1) ... [2018-02-04 04:41:42,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:41:42" (1/1) ... [2018-02-04 04:41:42,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:41:42" (1/1) ... [2018-02-04 04:41:42,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 04:41:42,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 04:41:42,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 04:41:42,113 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 04:41:42,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:41:42" (1/1) ... No working directory specified, using /home/ultimate/work/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 [2018-02-04 04:41:42,165 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 04:41:42,165 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 04:41:42,166 INFO L136 BoogieDeclarations]: Found implementation of procedure bar [2018-02-04 04:41:42,166 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-02-04 04:41:42,166 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 04:41:42,166 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-04 04:41:42,166 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-04 04:41:42,166 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 04:41:42,166 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 04:41:42,167 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 04:41:42,167 INFO L128 BoogieDeclarations]: Found specification of procedure bar [2018-02-04 04:41:42,167 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-02-04 04:41:42,167 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 04:41:42,167 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 04:41:42,167 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 04:41:42,353 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 04:41:42,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:41:42 BoogieIcfgContainer [2018-02-04 04:41:42,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 04:41:42,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 04:41:42,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 04:41:42,356 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 04:41:42,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 04:41:41" (1/3) ... [2018-02-04 04:41:42,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dfec515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:41:42, skipping insertion in model container [2018-02-04 04:41:42,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:41:42" (2/3) ... [2018-02-04 04:41:42,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dfec515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:41:42, skipping insertion in model container [2018-02-04 04:41:42,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:41:42" (3/3) ... [2018-02-04 04:41:42,358 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_true-valid-memsafety.c [2018-02-04 04:41:42,364 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-04 04:41:42,370 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-02-04 04:41:42,402 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 04:41:42,402 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 04:41:42,402 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-02-04 04:41:42,403 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-04 04:41:42,403 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 04:41:42,403 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 04:41:42,403 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 04:41:42,403 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 04:41:42,404 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 04:41:42,414 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2018-02-04 04:41:42,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-04 04:41:42,421 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:41:42,421 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:41:42,422 INFO L371 AbstractCegarLoop]: === Iteration 1 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-04 04:41:42,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1613294992, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/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 [2018-02-04 04:41:42,439 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:41:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:41:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:41:42,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:41:42,546 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:41:42,547 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-04 04:41:42,548 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:41:42,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:41:42,548 INFO L182 omatonBuilderFactory]: Interpolants [71#true, 72#false, 76#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-04 04:41:42,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:41:42,549 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-04 04:41:42,560 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-04 04:41:42,561 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 04:41:42,563 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2018-02-04 04:41:42,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:41:42,680 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2018-02-04 04:41:42,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-04 04:41:42,682 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-02-04 04:41:42,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:41:42,690 INFO L225 Difference]: With dead ends: 68 [2018-02-04 04:41:42,690 INFO L226 Difference]: Without dead ends: 65 [2018-02-04 04:41:42,692 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 04:41:42,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-02-04 04:41:42,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-02-04 04:41:42,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-02-04 04:41:42,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-02-04 04:41:42,718 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 13 [2018-02-04 04:41:42,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:41:42,718 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-02-04 04:41:42,718 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-04 04:41:42,718 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-02-04 04:41:42,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-04 04:41:42,718 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:41:42,718 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:41:42,718 INFO L371 AbstractCegarLoop]: === Iteration 2 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-04 04:41:42,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1969953325, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/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 [2018-02-04 04:41:42,721 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:41:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:41:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:41:42,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:41:42,766 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:41:42,767 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 04:41:42,767 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:41:42,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:41:42,767 INFO L182 omatonBuilderFactory]: Interpolants [210#true, 211#false, 215#(< main_~i~2 100), 216#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-04 04:41:42,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:41:42,769 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-04 04:41:42,769 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-04 04:41:42,769 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-04 04:41:42,770 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 4 states. [2018-02-04 04:41:42,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:41:42,848 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2018-02-04 04:41:42,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-04 04:41:42,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-02-04 04:41:42,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:41:42,850 INFO L225 Difference]: With dead ends: 64 [2018-02-04 04:41:42,850 INFO L226 Difference]: Without dead ends: 64 [2018-02-04 04:41:42,851 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-04 04:41:42,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-02-04 04:41:42,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-02-04 04:41:42,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-02-04 04:41:42,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2018-02-04 04:41:42,856 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 14 [2018-02-04 04:41:42,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:41:42,856 INFO L432 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2018-02-04 04:41:42,856 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-04 04:41:42,856 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2018-02-04 04:41:42,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-04 04:41:42,857 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:41:42,857 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:41:42,857 INFO L371 AbstractCegarLoop]: === Iteration 3 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-04 04:41:42,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1297061679, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/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 [2018-02-04 04:41:42,860 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:41:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:41:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:41:42,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:41:42,930 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:41:42,931 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 04:41:42,931 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:41:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:41:42,931 INFO L182 omatonBuilderFactory]: Interpolants [352#(= 0 foo_~size), 353#(<= foo_~size foo_~i~1), 354#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 345#true, 346#false, 350#(= 0 main_~i~2), 351#(= 0 |foo_#in~size|)] [2018-02-04 04:41:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:41:42,931 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 04:41:42,932 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 04:41:42,932 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:41:42,932 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 7 states. [2018-02-04 04:41:43,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:41:43,134 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2018-02-04 04:41:43,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-04 04:41:43,135 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-02-04 04:41:43,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:41:43,137 INFO L225 Difference]: With dead ends: 85 [2018-02-04 04:41:43,137 INFO L226 Difference]: Without dead ends: 85 [2018-02-04 04:41:43,138 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-02-04 04:41:43,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-02-04 04:41:43,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2018-02-04 04:41:43,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-02-04 04:41:43,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2018-02-04 04:41:43,151 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 17 [2018-02-04 04:41:43,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:41:43,151 INFO L432 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2018-02-04 04:41:43,151 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 04:41:43,151 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2018-02-04 04:41:43,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-04 04:41:43,152 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:41:43,152 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:41:43,152 INFO L371 AbstractCegarLoop]: === Iteration 4 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-04 04:41:43,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1600184185, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/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 [2018-02-04 04:41:43,157 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:41:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:41:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:41:43,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:41:43,209 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:41:43,209 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-04 04:41:43,209 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:41:43,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:41:43,210 INFO L182 omatonBuilderFactory]: Interpolants [528#false, 532#(= 0 main_~i~2), 533#(= 0 |foo_#in~size|), 534#(= 0 foo_~size), 535#(= 0 |bar_#in~size|), 536#(<= bar_~size bar_~i~0), 537#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 527#true] [2018-02-04 04:41:43,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:41:43,210 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 04:41:43,210 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 04:41:43,210 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-02-04 04:41:43,210 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand 8 states. [2018-02-04 04:41:43,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:41:43,471 INFO L93 Difference]: Finished difference Result 91 states and 96 transitions. [2018-02-04 04:41:43,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-04 04:41:43,473 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2018-02-04 04:41:43,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:41:43,474 INFO L225 Difference]: With dead ends: 91 [2018-02-04 04:41:43,474 INFO L226 Difference]: Without dead ends: 91 [2018-02-04 04:41:43,474 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-02-04 04:41:43,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-02-04 04:41:43,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 85. [2018-02-04 04:41:43,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-02-04 04:41:43,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2018-02-04 04:41:43,480 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 21 [2018-02-04 04:41:43,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:41:43,481 INFO L432 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2018-02-04 04:41:43,481 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 04:41:43,481 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2018-02-04 04:41:43,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-02-04 04:41:43,481 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:41:43,482 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:41:43,482 INFO L371 AbstractCegarLoop]: === Iteration 5 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-04 04:41:43,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1759981910, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:41:43,485 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:41:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:41:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:41:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:41:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:41:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:41:43,544 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:41:43,544 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 04:41:43,544 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:41:43,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:41:43,544 INFO L182 omatonBuilderFactory]: Interpolants [757#(= |foo_#t~ret5| 0), 726#true, 758#(= 0 bar_~res~0), 727#false, 759#(= 0 |bar_#res|), 749#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 750#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))] [2018-02-04 04:41:43,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:41:43,545 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 04:41:43,545 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 04:41:43,545 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:41:43,545 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand 7 states. [2018-02-04 04:41:43,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:41:43,695 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2018-02-04 04:41:43,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 04:41:43,695 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2018-02-04 04:41:43,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:41:43,697 INFO L225 Difference]: With dead ends: 94 [2018-02-04 04:41:43,697 INFO L226 Difference]: Without dead ends: 94 [2018-02-04 04:41:43,697 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-02-04 04:41:43,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-02-04 04:41:43,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2018-02-04 04:41:43,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-02-04 04:41:43,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2018-02-04 04:41:43,701 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 31 [2018-02-04 04:41:43,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:41:43,701 INFO L432 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2018-02-04 04:41:43,702 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 04:41:43,702 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2018-02-04 04:41:43,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-02-04 04:41:43,702 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:41:43,702 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:41:43,702 INFO L371 AbstractCegarLoop]: === Iteration 6 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-04 04:41:43,702 INFO L82 PathProgramCache]: Analyzing trace with hash 216183673, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:41:43,707 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:41:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:41:43,723 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 04:41:43,731 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:41:43,732 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:41:43,732 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:41:43,733 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:41:43,733 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:41:43,733 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:41:43,842 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 8009 column 16: unknown constant %1 at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1420) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:222) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:146) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:200) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.assertTerm(ManagedScript.java:133) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:120) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.checkEqualityStatus(Elim1Store.java:667) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.analyzeIndexEqualities(Elim1Store.java:759) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:300) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:270) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computePredicates(NestedInterpolantsBuilder.java:582) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:169) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:294) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:196) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.FixedTraceAbstractionRefinementStrategy.getTraceCheck(FixedTraceAbstractionRefinementStrategy.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:397) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:119) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-02-04 04:41:43,844 INFO L168 Benchmark]: Toolchain (without parser) took 1909.01 ms. Allocated memory was 405.8 MB in the beginning and 624.4 MB in the end (delta: 218.6 MB). Free memory was 363.8 MB in the beginning and 605.5 MB in the end (delta: -241.8 MB). Peak memory consumption was 123.9 MB. Max. memory is 5.3 GB. [2018-02-04 04:41:43,845 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 405.8 MB. Free memory is still 369.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 04:41:43,845 INFO L168 Benchmark]: CACSL2BoogieTranslator took 141.34 ms. Allocated memory is still 405.8 MB. Free memory was 363.8 MB in the beginning and 355.8 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 5.3 GB. [2018-02-04 04:41:43,846 INFO L168 Benchmark]: Boogie Preprocessor took 34.56 ms. Allocated memory is still 405.8 MB. Free memory was 355.8 MB in the beginning and 353.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-04 04:41:43,846 INFO L168 Benchmark]: RCFGBuilder took 240.27 ms. Allocated memory is still 405.8 MB. Free memory was 353.2 MB in the beginning and 331.7 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 5.3 GB. [2018-02-04 04:41:43,846 INFO L168 Benchmark]: TraceAbstraction took 1489.99 ms. Allocated memory was 405.8 MB in the beginning and 624.4 MB in the end (delta: 218.6 MB). Free memory was 331.7 MB in the beginning and 605.5 MB in the end (delta: -273.8 MB). Peak memory consumption was 91.9 MB. Max. memory is 5.3 GB. [2018-02-04 04:41:43,848 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 405.8 MB. Free memory is still 369.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 141.34 ms. Allocated memory is still 405.8 MB. Free memory was 363.8 MB in the beginning and 355.8 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 34.56 ms. Allocated memory is still 405.8 MB. Free memory was 355.8 MB in the beginning and 353.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 240.27 ms. Allocated memory is still 405.8 MB. Free memory was 353.2 MB in the beginning and 331.7 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1489.99 ms. Allocated memory was 405.8 MB in the beginning and 624.4 MB in the end (delta: 218.6 MB). Free memory was 331.7 MB in the beginning and 605.5 MB in the end (delta: -273.8 MB). Peak memory consumption was 91.9 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: line 8009 column 16: unknown constant %1 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: line 8009 column 16: unknown constant %1: de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1420) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_04-41-43-855.csv Received shutdown request...