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/mult_array-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-26d9e06-m [2018-02-02 08:43:43,486 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 08:43:43,488 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 08:43:43,501 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 08:43:43,501 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 08:43:43,502 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 08:43:43,503 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 08:43:43,504 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 08:43:43,506 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 08:43:43,507 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 08:43:43,508 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 08:43:43,508 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 08:43:43,509 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 08:43:43,510 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 08:43:43,511 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 08:43:43,513 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 08:43:43,514 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 08:43:43,516 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 08:43:43,517 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 08:43:43,518 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 08:43:43,520 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 08:43:43,524 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 08:43:43,534 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 08:43:43,534 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 08:43:43,535 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 08:43:43,535 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 08:43:43,535 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 08:43:43,535 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 08:43:43,535 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 08:43:43,536 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 08:43:43,536 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 08:43:43,536 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 08:43:43,536 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 08:43:43,536 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 08:43:43,536 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 08:43:43,536 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 08:43:43,536 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 08:43:43,536 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 08:43:43,536 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 08:43:43,537 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 08:43:43,537 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 08:43:43,537 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 08:43:43,537 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 08:43:43,537 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 08:43:43,537 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 08:43:43,537 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 08:43:43,537 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-02 08:43:43,567 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 08:43:43,575 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 08:43:43,577 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 08:43:43,579 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 08:43:43,579 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 08:43:43,579 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/mult_array-alloca_true-valid-memsafety_true-termination.i [2018-02-02 08:43:43,738 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 08:43:43,739 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 08:43:43,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 08:43:43,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 08:43:43,747 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 08:43:43,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 08:43:43" (1/1) ... [2018-02-02 08:43:43,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e2a3f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:43:43, skipping insertion in model container [2018-02-02 08:43:43,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 08:43:43" (1/1) ... [2018-02-02 08:43:43,765 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 08:43:43,793 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 08:43:43,884 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 08:43:43,895 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 08:43:43,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:43:43 WrapperNode [2018-02-02 08:43:43,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 08:43:43,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 08:43:43,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 08:43:43,901 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 08:43:43,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:43:43" (1/1) ... [2018-02-02 08:43:43,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:43:43" (1/1) ... [2018-02-02 08:43:43,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:43:43" (1/1) ... [2018-02-02 08:43:43,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:43:43" (1/1) ... [2018-02-02 08:43:43,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:43:43" (1/1) ... [2018-02-02 08:43:43,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:43:43" (1/1) ... [2018-02-02 08:43:43,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:43:43" (1/1) ... [2018-02-02 08:43:43,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 08:43:43,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 08:43:43,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 08:43:43,930 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 08:43:43,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:43:43" (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 08:43:43,965 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 08:43:43,965 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 08:43:43,965 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 08:43:43,966 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 08:43:43,966 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 08:43:43,966 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 08:43:43,966 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 08:43:43,966 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 08:43:43,966 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 08:43:43,966 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 08:43:43,966 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 08:43:43,966 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 08:43:44,118 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 08:43:44,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 08:43:44 BoogieIcfgContainer [2018-02-02 08:43:44,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 08:43:44,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 08:43:44,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 08:43:44,121 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 08:43:44,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 08:43:43" (1/3) ... [2018-02-02 08:43:44,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514ba4fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 08:43:44, skipping insertion in model container [2018-02-02 08:43:44,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:43:43" (2/3) ... [2018-02-02 08:43:44,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514ba4fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 08:43:44, skipping insertion in model container [2018-02-02 08:43:44,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 08:43:44" (3/3) ... [2018-02-02 08:43:44,124 INFO L107 eAbstractionObserver]: Analyzing ICFG mult_array-alloca_true-valid-memsafety_true-termination.i [2018-02-02 08:43:44,130 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 08:43:44,136 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-02-02 08:43:44,162 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 08:43:44,162 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 08:43:44,162 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 08:43:44,162 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 08:43:44,162 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 08:43:44,162 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 08:43:44,162 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 08:43:44,163 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 08:43:44,163 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 08:43:44,174 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-02-02 08:43:44,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-02 08:43:44,184 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:43:44,185 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:43:44,185 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:43:44,188 INFO L82 PathProgramCache]: Analyzing trace with hash 83465695, now seen corresponding path program 1 times [2018-02-02 08:43:44,190 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:43:44,190 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:43:44,222 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:43:44,222 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:43:44,223 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:43:44,253 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-02-02 08:43:44,254 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-02-02 08:43:44,254 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-02-02 08:43:44,262 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:43:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:43:44,297 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:43:44,333 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 6 treesize of output 5 [2018-02-02 08:43:44,334 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:43:44,340 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:43:44,340 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-02-02 08:43:44,372 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 11 [2018-02-02 08:43:44,373 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:43:44,380 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-02-02 08:43:44,380 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2018-02-02 08:43:44,387 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 08:43:44,407 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:43:44,407 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 08:43:44,408 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 08:43:44,416 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 08:43:44,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 08:43:44,418 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2018-02-02 08:43:44,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:43:44,564 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-02-02 08:43:44,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 08:43:44,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-02-02 08:43:44,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:43:44,572 INFO L225 Difference]: With dead ends: 44 [2018-02-02 08:43:44,572 INFO L226 Difference]: Without dead ends: 41 [2018-02-02 08:43:44,574 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 1 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 08:43:44,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-02-02 08:43:44,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-02-02 08:43:44,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-02-02 08:43:44,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-02-02 08:43:44,600 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 17 [2018-02-02 08:43:44,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:43:44,601 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-02-02 08:43:44,601 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 08:43:44,601 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-02-02 08:43:44,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-02 08:43:44,601 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:43:44,601 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:43:44,601 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:43:44,602 INFO L82 PathProgramCache]: Analyzing trace with hash 83465696, now seen corresponding path program 1 times [2018-02-02 08:43:44,602 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:43:44,602 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:43:44,603 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:43:44,603 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:43:44,603 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:43:44,610 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-02-02 08:43:44,611 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-02-02 08:43:44,611 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-02-02 08:43:44,616 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:43:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:43:44,633 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:43:44,643 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 6 treesize of output 5 [2018-02-02 08:43:44,643 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:43:44,654 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 08:43:44,654 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 08:43:44,665 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:43:44,666 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:19 [2018-02-02 08:43:44,708 INFO L700 Elim1Store]: detected not equals via solver [2018-02-02 08:43:44,710 INFO L700 Elim1Store]: detected not equals via solver [2018-02-02 08:43:44,712 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-02-02 08:43:44,712 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:43:44,735 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 21 [2018-02-02 08:43:44,735 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 08:43:44,746 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-02-02 08:43:44,746 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:34, output treesize:27 [2018-02-02 08:43:44,803 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 08:43:44,824 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:43:44,825 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 08:43:44,826 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 08:43:44,827 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 08:43:44,827 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-02-02 08:43:44,827 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2018-02-02 08:43:45,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:43:45,093 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-02-02 08:43:45,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-02 08:43:45,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-02-02 08:43:45,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:43:45,095 INFO L225 Difference]: With dead ends: 46 [2018-02-02 08:43:45,095 INFO L226 Difference]: Without dead ends: 46 [2018-02-02 08:43:45,096 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-02-02 08:43:45,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-02-02 08:43:45,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2018-02-02 08:43:45,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-02-02 08:43:45,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2018-02-02 08:43:45,100 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 17 [2018-02-02 08:43:45,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:43:45,100 INFO L432 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2018-02-02 08:43:45,100 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 08:43:45,100 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2018-02-02 08:43:45,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-02-02 08:43:45,101 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:43:45,101 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:43:45,101 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:43:45,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1544748661, now seen corresponding path program 1 times [2018-02-02 08:43:45,102 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:43:45,102 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:43:45,103 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:43:45,103 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:43:45,103 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:43:45,108 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-02-02 08:43:45,109 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-02-02 08:43:45,109 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-02-02 08:43:45,115 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:43:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:43:45,129 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:43:45,154 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 08:43:45,173 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:43:45,174 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 08:43:45,174 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 08:43:45,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 08:43:45,174 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-02 08:43:45,174 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 6 states. [2018-02-02 08:43:45,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:43:45,222 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-02-02 08:43:45,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-02 08:43:45,222 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-02-02 08:43:45,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:43:45,223 INFO L225 Difference]: With dead ends: 40 [2018-02-02 08:43:45,223 INFO L226 Difference]: Without dead ends: 40 [2018-02-02 08:43:45,223 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-02-02 08:43:45,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-02-02 08:43:45,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-02-02 08:43:45,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-02-02 08:43:45,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2018-02-02 08:43:45,226 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 19 [2018-02-02 08:43:45,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:43:45,226 INFO L432 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2018-02-02 08:43:45,226 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 08:43:45,227 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2018-02-02 08:43:45,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-02 08:43:45,227 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:43:45,227 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:43:45,227 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:43:45,228 INFO L82 PathProgramCache]: Analyzing trace with hash -301838139, now seen corresponding path program 1 times [2018-02-02 08:43:45,228 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:43:45,228 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:43:45,229 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:43:45,229 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:43:45,229 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:43:45,235 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-02-02 08:43:45,235 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-02-02 08:43:45,235 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-02-02 08:43:45,247 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:43:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:43:45,264 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:43:45,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:43:45,298 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:43:45,298 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 08:43:45,299 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 08:43:45,299 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 08:43:45,299 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-02-02 08:43:45,299 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 5 states. [2018-02-02 08:43:45,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:43:45,325 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2018-02-02 08:43:45,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 08:43:45,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-02-02 08:43:45,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:43:45,326 INFO L225 Difference]: With dead ends: 71 [2018-02-02 08:43:45,326 INFO L226 Difference]: Without dead ends: 71 [2018-02-02 08:43:45,326 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-02-02 08:43:45,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-02-02 08:43:45,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 54. [2018-02-02 08:43:45,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-02-02 08:43:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2018-02-02 08:43:45,331 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 22 [2018-02-02 08:43:45,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:43:45,331 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2018-02-02 08:43:45,331 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 08:43:45,331 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2018-02-02 08:43:45,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-02 08:43:45,332 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:43:45,332 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:43:45,332 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:43:45,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1322906493, now seen corresponding path program 1 times [2018-02-02 08:43:45,332 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:43:45,332 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:43:45,333 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:43:45,333 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:43:45,333 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:43:45,338 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-02-02 08:43:45,338 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-02-02 08:43:45,338 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-02-02 08:43:45,343 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:43:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:43:45,355 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:43:45,367 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 6 treesize of output 5 [2018-02-02 08:43:45,367 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:43:45,377 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 08:43:45,377 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 08:43:45,382 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:43:45,382 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:18, output treesize:16 [2018-02-02 08:43:45,403 INFO L700 Elim1Store]: detected not equals via solver [2018-02-02 08:43:45,404 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 21 [2018-02-02 08:43:45,405 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:43:45,414 INFO L700 Elim1Store]: detected not equals via solver [2018-02-02 08:43:45,414 INFO L700 Elim1Store]: detected not equals via solver [2018-02-02 08:43:45,415 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-02-02 08:43:45,415 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 08:43:45,421 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-02-02 08:43:45,421 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:31, output treesize:24 [2018-02-02 08:43:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:43:45,515 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-02 08:43:45,516 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-02-02 08:43:45,516 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-02 08:43:45,516 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-02 08:43:45,516 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-02-02 08:43:45,516 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 8 states. [2018-02-02 08:43:45,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:43:45,956 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2018-02-02 08:43:45,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 08:43:45,957 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-02-02 08:43:45,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:43:45,957 INFO L225 Difference]: With dead ends: 55 [2018-02-02 08:43:45,957 INFO L226 Difference]: Without dead ends: 55 [2018-02-02 08:43:45,958 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-02-02 08:43:45,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-02-02 08:43:45,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2018-02-02 08:43:45,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-02-02 08:43:45,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2018-02-02 08:43:45,961 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 22 [2018-02-02 08:43:45,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:43:45,961 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2018-02-02 08:43:45,961 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-02 08:43:45,961 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2018-02-02 08:43:45,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-02 08:43:45,961 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:43:45,961 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] [2018-02-02 08:43:45,962 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:43:45,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1599933162, now seen corresponding path program 1 times [2018-02-02 08:43:45,962 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:43:45,962 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:43:45,962 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:43:45,963 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:43:45,963 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:43:45,967 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-02-02 08:43:45,967 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-02-02 08:43:45,967 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-02-02 08:43:45,971 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:43:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:43:45,981 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:43:46,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:43:46,051 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:43:46,051 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-02 08:43:46,051 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-02 08:43:46,052 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-02 08:43:46,052 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-02-02 08:43:46,052 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 8 states. [2018-02-02 08:43:46,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:43:46,138 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2018-02-02 08:43:46,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 08:43:46,138 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-02-02 08:43:46,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:43:46,139 INFO L225 Difference]: With dead ends: 68 [2018-02-02 08:43:46,139 INFO L226 Difference]: Without dead ends: 68 [2018-02-02 08:43:46,139 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2018-02-02 08:43:46,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-02-02 08:43:46,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 59. [2018-02-02 08:43:46,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-02-02 08:43:46,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2018-02-02 08:43:46,143 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 25 [2018-02-02 08:43:46,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:43:46,143 INFO L432 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2018-02-02 08:43:46,143 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-02 08:43:46,143 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2018-02-02 08:43:46,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-02 08:43:46,144 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:43:46,144 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] [2018-02-02 08:43:46,144 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:43:46,144 INFO L82 PathProgramCache]: Analyzing trace with hash -89010580, now seen corresponding path program 1 times [2018-02-02 08:43:46,144 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:43:46,144 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:43:46,145 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:43:46,145 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:43:46,145 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:43:46,152 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-02-02 08:43:46,152 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-02-02 08:43:46,152 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-02-02 08:43:46,160 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:43:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:43:46,173 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:43:46,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:43:46,269 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:43:46,269 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-02 08:43:46,269 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-02 08:43:46,269 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-02 08:43:46,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-02-02 08:43:46,270 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 9 states. [2018-02-02 08:43:46,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:43:46,395 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2018-02-02 08:43:46,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-02-02 08:43:46,396 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2018-02-02 08:43:46,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:43:46,397 INFO L225 Difference]: With dead ends: 61 [2018-02-02 08:43:46,397 INFO L226 Difference]: Without dead ends: 61 [2018-02-02 08:43:46,397 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2018-02-02 08:43:46,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-02-02 08:43:46,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 51. [2018-02-02 08:43:46,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-02-02 08:43:46,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2018-02-02 08:43:46,401 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 25 [2018-02-02 08:43:46,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:43:46,401 INFO L432 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2018-02-02 08:43:46,401 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-02 08:43:46,401 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2018-02-02 08:43:46,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-02-02 08:43:46,402 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:43:46,402 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 08:43:46,403 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:43:46,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1941679528, now seen corresponding path program 1 times [2018-02-02 08:43:46,403 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:43:46,403 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:43:46,404 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:43:46,404 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:43:46,404 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:43:46,409 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-02-02 08:43:46,409 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-02-02 08:43:46,410 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-02-02 08:43:46,414 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:43:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:43:46,428 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:43:46,430 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 10 treesize of output 9 [2018-02-02 08:43:46,431 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:43:46,433 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:43:46,434 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:13 [2018-02-02 08:43:46,465 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 08:43:46,500 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:43:46,501 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 08:43:46,501 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 08:43:46,501 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 08:43:46,502 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-02-02 08:43:46,502 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 6 states. [2018-02-02 08:43:46,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:43:46,645 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2018-02-02 08:43:46,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 08:43:46,645 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-02-02 08:43:46,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:43:46,645 INFO L225 Difference]: With dead ends: 50 [2018-02-02 08:43:46,645 INFO L226 Difference]: Without dead ends: 50 [2018-02-02 08:43:46,646 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-02-02 08:43:46,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-02-02 08:43:46,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-02-02 08:43:46,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-02-02 08:43:46,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2018-02-02 08:43:46,648 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 26 [2018-02-02 08:43:46,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:43:46,649 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2018-02-02 08:43:46,649 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 08:43:46,649 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2018-02-02 08:43:46,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-02-02 08:43:46,649 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:43:46,650 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 08:43:46,650 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:43:46,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1941679529, now seen corresponding path program 1 times [2018-02-02 08:43:46,650 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:43:46,650 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:43:46,651 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:43:46,651 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:43:46,651 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:43:46,656 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-02-02 08:43:46,656 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-02-02 08:43:46,656 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-02-02 08:43:46,661 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:43:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:43:46,670 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:43:46,672 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 6 treesize of output 5 [2018-02-02 08:43:46,673 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:43:46,673 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:43:46,674 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-02-02 08:43:46,678 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 08:43:46,695 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:43:46,695 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 08:43:46,695 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 08:43:46,696 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 08:43:46,696 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 08:43:46,696 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 4 states. [2018-02-02 08:43:46,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:43:46,709 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-02-02 08:43:46,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 08:43:46,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-02-02 08:43:46,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:43:46,710 INFO L225 Difference]: With dead ends: 49 [2018-02-02 08:43:46,710 INFO L226 Difference]: Without dead ends: 49 [2018-02-02 08:43:46,710 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 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 08:43:46,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-02-02 08:43:46,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-02-02 08:43:46,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-02-02 08:43:46,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2018-02-02 08:43:46,712 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 26 [2018-02-02 08:43:46,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:43:46,713 INFO L432 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2018-02-02 08:43:46,713 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 08:43:46,713 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2018-02-02 08:43:46,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-02-02 08:43:46,713 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:43:46,713 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, 1, 1, 1, 1] [2018-02-02 08:43:46,713 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:43:46,713 INFO L82 PathProgramCache]: Analyzing trace with hash -35380843, now seen corresponding path program 1 times [2018-02-02 08:43:46,714 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:43:46,714 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:43:46,714 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:43:46,714 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:43:46,714 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:43:46,719 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-02-02 08:43:46,719 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-02-02 08:43:46,719 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-02-02 08:43:46,732 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:43:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:43:46,745 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:43:46,759 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 08:43:46,803 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:43:46,803 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 08:43:46,804 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 08:43:46,804 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 08:43:46,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-02-02 08:43:46,804 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 5 states. [2018-02-02 08:43:46,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:43:46,843 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2018-02-02 08:43:46,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 08:43:46,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-02-02 08:43:46,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:43:46,844 INFO L225 Difference]: With dead ends: 69 [2018-02-02 08:43:46,844 INFO L226 Difference]: Without dead ends: 69 [2018-02-02 08:43:46,845 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-02-02 08:43:46,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-02-02 08:43:46,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2018-02-02 08:43:46,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-02-02 08:43:46,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2018-02-02 08:43:46,848 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 30 [2018-02-02 08:43:46,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:43:46,849 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2018-02-02 08:43:46,849 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 08:43:46,849 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2018-02-02 08:43:46,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-02-02 08:43:46,849 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:43:46,849 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, 1, 1, 1, 1] [2018-02-02 08:43:46,849 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:43:46,849 INFO L82 PathProgramCache]: Analyzing trace with hash -169394349, now seen corresponding path program 1 times [2018-02-02 08:43:46,849 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:43:46,849 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:43:46,850 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:43:46,850 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:43:46,850 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:43:46,854 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-02-02 08:43:46,855 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-02-02 08:43:46,855 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-02-02 08:43:46,860 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:43:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:43:46,870 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:43:46,905 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc2.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc2.base| 1))) (and (= |c_#valid| (store (store .cse0 |c_main_#t~malloc3.base| 1) |main_#t~malloc2.base| 0)) (= (select |c_old(#valid)| |main_#t~malloc2.base|) 0) (= (select .cse0 |c_main_#t~malloc3.base|) 0)))) is different from true [2018-02-02 08:43:46,910 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc2.base| Int) (|main_#t~malloc3.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc2.base| 1))) (and (= |c_#valid| (store (store (store .cse0 |main_#t~malloc3.base| 1) |main_#t~malloc2.base| 0) |main_#t~malloc3.base| 0)) (= (select |c_old(#valid)| |main_#t~malloc2.base|) 0) (= (select .cse0 |main_#t~malloc3.base|) 0)))) is different from true [2018-02-02 08:43:46,914 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 08:43:46,937 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:43:46,937 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 08:43:46,938 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 08:43:46,938 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 08:43:46,938 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=15, Unknown=2, NotChecked=14, Total=42 [2018-02-02 08:43:46,938 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 7 states. [2018-02-02 08:43:46,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:43:46,957 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2018-02-02 08:43:46,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 08:43:46,958 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2018-02-02 08:43:46,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:43:46,958 INFO L225 Difference]: With dead ends: 51 [2018-02-02 08:43:46,958 INFO L226 Difference]: Without dead ends: 0 [2018-02-02 08:43:46,958 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=15, Unknown=2, NotChecked=14, Total=42 [2018-02-02 08:43:46,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-02 08:43:46,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-02 08:43:46,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-02 08:43:46,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-02 08:43:46,959 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2018-02-02 08:43:46,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:43:46,959 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-02 08:43:46,959 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 08:43:46,959 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-02 08:43:46,959 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-02 08:43:46,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 08:43:46 BoogieIcfgContainer [2018-02-02 08:43:46,963 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 08:43:46,963 INFO L168 Benchmark]: Toolchain (without parser) took 3224.70 ms. Allocated memory was 399.5 MB in the beginning and 621.8 MB in the end (delta: 222.3 MB). Free memory was 357.3 MB in the beginning and 406.4 MB in the end (delta: -49.1 MB). Peak memory consumption was 173.2 MB. Max. memory is 5.3 GB. [2018-02-02 08:43:46,964 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 399.5 MB. Free memory is still 362.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 08:43:46,965 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.69 ms. Allocated memory is still 399.5 MB. Free memory was 356.0 MB in the beginning and 345.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-02-02 08:43:46,965 INFO L168 Benchmark]: Boogie Preprocessor took 27.94 ms. Allocated memory is still 399.5 MB. Free memory was 345.4 MB in the beginning and 344.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-02 08:43:46,965 INFO L168 Benchmark]: RCFGBuilder took 189.35 ms. Allocated memory is still 399.5 MB. Free memory was 344.1 MB in the beginning and 325.5 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 5.3 GB. [2018-02-02 08:43:46,965 INFO L168 Benchmark]: TraceAbstraction took 2843.62 ms. Allocated memory was 399.5 MB in the beginning and 621.8 MB in the end (delta: 222.3 MB). Free memory was 325.5 MB in the beginning and 406.4 MB in the end (delta: -80.9 MB). Peak memory consumption was 141.4 MB. Max. memory is 5.3 GB. [2018-02-02 08:43:46,967 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 399.5 MB. Free memory is still 362.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 160.69 ms. Allocated memory is still 399.5 MB. Free memory was 356.0 MB in the beginning and 345.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 27.94 ms. Allocated memory is still 399.5 MB. Free memory was 345.4 MB in the beginning and 344.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 189.35 ms. Allocated memory is still 399.5 MB. Free memory was 344.1 MB in the beginning and 325.5 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2843.62 ms. Allocated memory was 399.5 MB in the beginning and 621.8 MB in the end (delta: 222.3 MB). Free memory was 325.5 MB in the beginning and 406.4 MB in the end (delta: -80.9 MB). Peak memory consumption was 141.4 MB. 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: 540]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 46 locations, 7 error locations. SAFE Result, 2.8s OverallTime, 11 OverallIterations, 2 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 305 SDtfs, 606 SDslu, 507 SDs, 0 SdLazy, 504 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=6, 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, 11 MinimizatonAttempts, 58 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 259 NumberOfCodeBlocks, 259 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 248 ConstructedInterpolants, 27 QuantifiedInterpolants, 50421 SizeOfPredicates, 33 NumberOfNonLiveVariables, 909 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 17/18 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/mult_array-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_08-43-46-975.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mult_array-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_08-43-46-975.csv Received shutdown request...