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/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf -i ../../../trunk/examples/svcomp/array-memsafety/array01-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-26d9e06-m [2018-02-02 08:40:33,129 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 08:40:33,130 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 08:40:33,144 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 08:40:33,144 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 08:40:33,145 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 08:40:33,146 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 08:40:33,148 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 08:40:33,150 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 08:40:33,151 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 08:40:33,151 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 08:40:33,152 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 08:40:33,153 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 08:40:33,154 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 08:40:33,155 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 08:40:33,156 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 08:40:33,158 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 08:40:33,160 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 08:40:33,161 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 08:40:33,162 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 08:40:33,163 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 08:40:33,167 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 08:40:33,168 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 08:40:33,168 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf [2018-02-02 08:40:33,178 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 08:40:33,178 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 08:40:33,179 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 08:40:33,179 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 08:40:33,179 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 08:40:33,179 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 08:40:33,180 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 08:40:33,180 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 08:40:33,180 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 08:40:33,180 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 08:40:33,180 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 08:40:33,180 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 08:40:33,180 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 08:40:33,180 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 08:40:33,181 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 08:40:33,181 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 08:40:33,181 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 08:40:33,181 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 08:40:33,181 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 08:40:33,181 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 08:40:33,182 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 08:40:33,182 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 08:40:33,182 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 08:40:33,182 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 08:40:33,182 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-02 08:40:33,210 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 08:40:33,220 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 08:40:33,226 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 08:40:33,227 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 08:40:33,227 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 08:40:33,228 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/array01-alloca_true-valid-memsafety_true-termination.i [2018-02-02 08:40:33,433 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 08:40:33,434 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 08:40:33,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 08:40:33,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 08:40:33,441 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 08:40:33,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 08:40:33" (1/1) ... [2018-02-02 08:40:33,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b546732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:40:33, skipping insertion in model container [2018-02-02 08:40:33,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 08:40:33" (1/1) ... [2018-02-02 08:40:33,456 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 08:40:33,479 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 08:40:33,562 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 08:40:33,576 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 08:40:33,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:40:33 WrapperNode [2018-02-02 08:40:33,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 08:40:33,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 08:40:33,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 08:40:33,583 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 08:40:33,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:40:33" (1/1) ... [2018-02-02 08:40:33,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:40:33" (1/1) ... [2018-02-02 08:40:33,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:40:33" (1/1) ... [2018-02-02 08:40:33,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:40:33" (1/1) ... [2018-02-02 08:40:33,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:40:33" (1/1) ... [2018-02-02 08:40:33,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:40:33" (1/1) ... [2018-02-02 08:40:33,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:40:33" (1/1) ... [2018-02-02 08:40:33,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 08:40:33,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 08:40:33,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 08:40:33,613 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 08:40:33,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:40:33" (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 [2018-02-02 08:40:33,649 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 08:40:33,649 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 08:40:33,649 INFO L136 BoogieDeclarations]: Found implementation of procedure test_fun [2018-02-02 08:40:33,649 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 08:40:33,649 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 08:40:33,649 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 08:40:33,649 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 08:40:33,649 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 08:40:33,649 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 08:40:33,649 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 08:40:33,649 INFO L128 BoogieDeclarations]: Found specification of procedure test_fun [2018-02-02 08:40:33,650 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 08:40:33,650 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 08:40:33,650 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 08:40:33,779 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 08:40:33,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 08:40:33 BoogieIcfgContainer [2018-02-02 08:40:33,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 08:40:33,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 08:40:33,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 08:40:33,782 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 08:40:33,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 08:40:33" (1/3) ... [2018-02-02 08:40:33,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c11b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 08:40:33, skipping insertion in model container [2018-02-02 08:40:33,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:40:33" (2/3) ... [2018-02-02 08:40:33,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c11b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 08:40:33, skipping insertion in model container [2018-02-02 08:40:33,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 08:40:33" (3/3) ... [2018-02-02 08:40:33,784 INFO L107 eAbstractionObserver]: Analyzing ICFG array01-alloca_true-valid-memsafety_true-termination.i [2018-02-02 08:40:33,790 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 08:40:33,794 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-02-02 08:40:33,823 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 08:40:33,823 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 08:40:33,823 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 08:40:33,823 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 08:40:33,824 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 08:40:33,824 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 08:40:33,824 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 08:40:33,824 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 08:40:33,824 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 08:40:33,833 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-02-02 08:40:33,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-02 08:40:33,839 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:40:33,840 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:40:33,840 INFO L371 AbstractCegarLoop]: === Iteration 1 === [test_funErr4RequiresViolation, test_funErr5RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 08:40:33,843 INFO L82 PathProgramCache]: Analyzing trace with hash -55325045, now seen corresponding path program 1 times [2018-02-02 08:40:33,844 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:40:33,844 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:40:33,877 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:40:33,877 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:40:33,878 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:40:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:40:33,934 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:40:34,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:40:34,037 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:40:34,037 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 08:40:34,038 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 08:40:34,051 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 08:40:34,051 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 08:40:34,053 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 6 states. [2018-02-02 08:40:34,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:40:34,176 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-02-02 08:40:34,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 08:40:34,223 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-02-02 08:40:34,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:40:34,231 INFO L225 Difference]: With dead ends: 35 [2018-02-02 08:40:34,231 INFO L226 Difference]: Without dead ends: 32 [2018-02-02 08:40:34,232 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-02-02 08:40:34,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-02-02 08:40:34,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-02-02 08:40:34,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-02-02 08:40:34,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2018-02-02 08:40:34,253 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 15 [2018-02-02 08:40:34,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:40:34,253 INFO L432 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2018-02-02 08:40:34,253 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 08:40:34,253 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2018-02-02 08:40:34,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-02 08:40:34,253 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:40:34,254 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:40:34,254 INFO L371 AbstractCegarLoop]: === Iteration 2 === [test_funErr4RequiresViolation, test_funErr5RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 08:40:34,254 INFO L82 PathProgramCache]: Analyzing trace with hash -55325044, now seen corresponding path program 1 times [2018-02-02 08:40:34,254 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:40:34,254 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:40:34,255 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:40:34,255 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:40:34,255 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:40:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:40:34,267 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:40:34,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:40:34,368 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:40:34,368 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 08:40:34,369 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 08:40:34,370 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 08:40:34,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-02-02 08:40:34,370 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 7 states. [2018-02-02 08:40:34,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:40:34,523 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2018-02-02 08:40:34,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-02 08:40:34,524 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-02-02 08:40:34,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:40:34,527 INFO L225 Difference]: With dead ends: 45 [2018-02-02 08:40:34,528 INFO L226 Difference]: Without dead ends: 45 [2018-02-02 08:40:34,529 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-02-02 08:40:34,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-02-02 08:40:34,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2018-02-02 08:40:34,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-02-02 08:40:34,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-02-02 08:40:34,534 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 15 [2018-02-02 08:40:34,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:40:34,534 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-02-02 08:40:34,534 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 08:40:34,534 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-02-02 08:40:34,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-02 08:40:34,535 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:40:34,535 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] [2018-02-02 08:40:34,535 INFO L371 AbstractCegarLoop]: === Iteration 3 === [test_funErr4RequiresViolation, test_funErr5RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 08:40:34,536 INFO L82 PathProgramCache]: Analyzing trace with hash -195737667, now seen corresponding path program 1 times [2018-02-02 08:40:34,536 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:40:34,536 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:40:34,537 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:40:34,537 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:40:34,537 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:40:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:40:34,553 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:40:34,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:40:34,589 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:40:34,589 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 08:40:34,590 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 08:40:34,590 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 08:40:34,590 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 08:40:34,590 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2018-02-02 08:40:34,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:40:34,638 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2018-02-02 08:40:34,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 08:40:34,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-02-02 08:40:34,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:40:34,639 INFO L225 Difference]: With dead ends: 45 [2018-02-02 08:40:34,639 INFO L226 Difference]: Without dead ends: 42 [2018-02-02 08:40:34,640 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-02 08:40:34,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-02-02 08:40:34,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-02-02 08:40:34,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-02-02 08:40:34,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-02-02 08:40:34,643 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 20 [2018-02-02 08:40:34,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:40:34,643 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-02-02 08:40:34,644 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 08:40:34,644 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-02-02 08:40:34,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-02 08:40:34,644 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:40:34,644 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:40:34,645 INFO L371 AbstractCegarLoop]: === Iteration 4 === [test_funErr4RequiresViolation, test_funErr5RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 08:40:34,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1506152513, now seen corresponding path program 1 times [2018-02-02 08:40:34,645 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:40:34,645 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:40:34,646 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:40:34,646 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:40:34,646 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:40:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:40:34,656 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:40:34,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:40:34,752 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:40:34,752 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 08:40:34,761 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:40:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:40:34,784 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:40:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:40:34,843 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-02 08:40:34,843 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 12 [2018-02-02 08:40:34,843 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-02-02 08:40:34,843 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-02-02 08:40:34,844 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-02-02 08:40:34,844 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 12 states. [2018-02-02 08:40:34,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:40:34,931 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2018-02-02 08:40:34,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 08:40:34,931 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2018-02-02 08:40:34,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:40:34,932 INFO L225 Difference]: With dead ends: 65 [2018-02-02 08:40:34,932 INFO L226 Difference]: Without dead ends: 65 [2018-02-02 08:40:34,932 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2018-02-02 08:40:34,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-02-02 08:40:34,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2018-02-02 08:40:34,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-02-02 08:40:34,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2018-02-02 08:40:34,937 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 21 [2018-02-02 08:40:34,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:40:34,937 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2018-02-02 08:40:34,937 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-02-02 08:40:34,938 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2018-02-02 08:40:34,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-02 08:40:34,938 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:40:34,938 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:40:34,939 INFO L371 AbstractCegarLoop]: === Iteration 5 === [test_funErr4RequiresViolation, test_funErr5RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 08:40:34,939 INFO L82 PathProgramCache]: Analyzing trace with hash 226288835, now seen corresponding path program 1 times [2018-02-02 08:40:34,939 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:40:34,939 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:40:34,940 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:40:34,940 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:40:34,940 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:40:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:40:34,949 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:40:35,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:40:35,041 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:40:35,041 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 08:40:35,048 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:40:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:40:35,061 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:40:35,079 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2018-02-02 08:40:35,080 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:40:35,083 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:40:35,083 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-02-02 08:40:35,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:40:35,231 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:40:35,232 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2018-02-02 08:40:35,232 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-02-02 08:40:35,232 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-02-02 08:40:35,233 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-02-02 08:40:35,233 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 13 states. [2018-02-02 08:40:35,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:40:35,408 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2018-02-02 08:40:35,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 08:40:35,409 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 21 [2018-02-02 08:40:35,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:40:35,409 INFO L225 Difference]: With dead ends: 58 [2018-02-02 08:40:35,409 INFO L226 Difference]: Without dead ends: 58 [2018-02-02 08:40:35,410 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-02-02 08:40:35,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-02-02 08:40:35,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2018-02-02 08:40:35,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-02-02 08:40:35,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2018-02-02 08:40:35,420 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 21 [2018-02-02 08:40:35,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:40:35,420 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2018-02-02 08:40:35,420 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-02-02 08:40:35,420 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2018-02-02 08:40:35,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-02-02 08:40:35,421 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:40:35,421 INFO L351 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] [2018-02-02 08:40:35,421 INFO L371 AbstractCegarLoop]: === Iteration 6 === [test_funErr4RequiresViolation, test_funErr5RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 08:40:35,421 INFO L82 PathProgramCache]: Analyzing trace with hash 308334376, now seen corresponding path program 1 times [2018-02-02 08:40:35,421 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:40:35,421 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:40:35,422 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:40:35,422 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:40:35,422 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:40:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:40:35,433 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:40:35,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-02 08:40:35,479 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:40:35,480 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 08:40:35,480 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 08:40:35,480 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 08:40:35,480 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 08:40:35,480 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 4 states. [2018-02-02 08:40:35,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:40:35,533 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2018-02-02 08:40:35,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 08:40:35,533 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-02-02 08:40:35,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:40:35,534 INFO L225 Difference]: With dead ends: 49 [2018-02-02 08:40:35,534 INFO L226 Difference]: Without dead ends: 0 [2018-02-02 08:40:35,534 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 08:40:35,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-02 08:40:35,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-02 08:40:35,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-02 08:40:35,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-02 08:40:35,535 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2018-02-02 08:40:35,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:40:35,535 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-02 08:40:35,535 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 08:40:35,535 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-02 08:40:35,535 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-02 08:40:35,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 08:40:35 BoogieIcfgContainer [2018-02-02 08:40:35,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 08:40:35,540 INFO L168 Benchmark]: Toolchain (without parser) took 2107.12 ms. Allocated memory was 392.7 MB in the beginning and 610.3 MB in the end (delta: 217.6 MB). Free memory was 350.9 MB in the beginning and 563.4 MB in the end (delta: -212.5 MB). Peak memory consumption was 5.0 MB. Max. memory is 5.3 GB. [2018-02-02 08:40:35,541 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 392.7 MB. Free memory is still 356.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 08:40:35,541 INFO L168 Benchmark]: CACSL2BoogieTranslator took 147.80 ms. Allocated memory is still 392.7 MB. Free memory was 349.6 MB in the beginning and 340.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 5.3 GB. [2018-02-02 08:40:35,541 INFO L168 Benchmark]: Boogie Preprocessor took 29.59 ms. Allocated memory is still 392.7 MB. Free memory was 340.3 MB in the beginning and 337.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-02 08:40:35,542 INFO L168 Benchmark]: RCFGBuilder took 166.83 ms. Allocated memory is still 392.7 MB. Free memory was 337.7 MB in the beginning and 321.0 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 5.3 GB. [2018-02-02 08:40:35,542 INFO L168 Benchmark]: TraceAbstraction took 1759.82 ms. Allocated memory was 392.7 MB in the beginning and 610.3 MB in the end (delta: 217.6 MB). Free memory was 321.0 MB in the beginning and 563.4 MB in the end (delta: -242.5 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 08:40:35,543 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 392.7 MB. Free memory is still 356.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 147.80 ms. Allocated memory is still 392.7 MB. Free memory was 349.6 MB in the beginning and 340.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 29.59 ms. Allocated memory is still 392.7 MB. Free memory was 340.3 MB in the beginning and 337.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 166.83 ms. Allocated memory is still 392.7 MB. Free memory was 337.7 MB in the beginning and 321.0 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1759.82 ms. Allocated memory was 392.7 MB in the beginning and 610.3 MB in the end (delta: 217.6 MB). Free memory was 321.0 MB in the beginning and 563.4 MB in the end (delta: -242.5 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 552]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 38 locations, 7 error locations. SAFE Result, 1.7s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 149 SDtfs, 273 SDslu, 469 SDs, 0 SdLazy, 344 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 152 ConstructedInterpolants, 11 QuantifiedInterpolants, 17096 SizeOfPredicates, 9 NumberOfNonLiveVariables, 157 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 12/18 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array01-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_08-40-35-549.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array01-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_08-40-35-549.csv Received shutdown request...