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/cstrchr-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-26d9e06-m [2018-02-02 08:41:31,378 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 08:41:31,379 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 08:41:31,391 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 08:41:31,391 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 08:41:31,392 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 08:41:31,393 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 08:41:31,394 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 08:41:31,396 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 08:41:31,396 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 08:41:31,397 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 08:41:31,397 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 08:41:31,398 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 08:41:31,399 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 08:41:31,400 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 08:41:31,401 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 08:41:31,403 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 08:41:31,404 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 08:41:31,405 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 08:41:31,406 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 08:41:31,407 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 08:41:31,412 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 08:41:31,420 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 08:41:31,420 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 08:41:31,421 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 08:41:31,421 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 08:41:31,422 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 08:41:31,422 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 08:41:31,422 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 08:41:31,422 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 08:41:31,422 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 08:41:31,423 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 08:41:31,423 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 08:41:31,423 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 08:41:31,423 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 08:41:31,423 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 08:41:31,423 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 08:41:31,423 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 08:41:31,424 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 08:41:31,424 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 08:41:31,424 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 08:41:31,424 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 08:41:31,424 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 08:41:31,424 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 08:41:31,424 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 08:41:31,425 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 08:41:31,425 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-02 08:41:31,451 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 08:41:31,459 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 08:41:31,461 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 08:41:31,462 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 08:41:31,462 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 08:41:31,463 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrchr-alloca_true-valid-memsafety_true-termination.i [2018-02-02 08:41:31,586 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 08:41:31,588 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 08:41:31,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 08:41:31,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 08:41:31,592 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 08:41:31,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 08:41:31" (1/1) ... [2018-02-02 08:41:31,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ad95545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:41:31, skipping insertion in model container [2018-02-02 08:41:31,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 08:41:31" (1/1) ... [2018-02-02 08:41:31,605 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 08:41:31,633 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 08:41:31,726 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 08:41:31,738 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 08:41:31,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:41:31 WrapperNode [2018-02-02 08:41:31,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 08:41:31,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 08:41:31,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 08:41:31,745 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 08:41:31,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:41:31" (1/1) ... [2018-02-02 08:41:31,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:41:31" (1/1) ... [2018-02-02 08:41:31,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:41:31" (1/1) ... [2018-02-02 08:41:31,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:41:31" (1/1) ... [2018-02-02 08:41:31,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:41:31" (1/1) ... [2018-02-02 08:41:31,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:41:31" (1/1) ... [2018-02-02 08:41:31,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:41:31" (1/1) ... [2018-02-02 08:41:31,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 08:41:31,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 08:41:31,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 08:41:31,768 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 08:41:31,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:41:31" (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 08:41:31,804 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 08:41:31,804 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 08:41:31,805 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrchr [2018-02-02 08:41:31,805 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 08:41:31,805 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 08:41:31,805 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 08:41:31,805 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 08:41:31,805 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 08:41:31,805 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 08:41:31,805 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 08:41:31,805 INFO L128 BoogieDeclarations]: Found specification of procedure cstrchr [2018-02-02 08:41:31,805 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 08:41:31,805 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 08:41:31,805 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 08:41:31,951 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 08:41:31,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 08:41:31 BoogieIcfgContainer [2018-02-02 08:41:31,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 08:41:31,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 08:41:31,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 08:41:31,955 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 08:41:31,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 08:41:31" (1/3) ... [2018-02-02 08:41:31,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b3af03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 08:41:31, skipping insertion in model container [2018-02-02 08:41:31,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:41:31" (2/3) ... [2018-02-02 08:41:31,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b3af03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 08:41:31, skipping insertion in model container [2018-02-02 08:41:31,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 08:41:31" (3/3) ... [2018-02-02 08:41:31,957 INFO L107 eAbstractionObserver]: Analyzing ICFG cstrchr-alloca_true-valid-memsafety_true-termination.i [2018-02-02 08:41:31,964 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 08:41:31,970 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-02-02 08:41:32,001 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 08:41:32,001 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 08:41:32,001 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 08:41:32,001 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 08:41:32,001 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 08:41:32,002 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 08:41:32,002 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 08:41:32,002 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 08:41:32,002 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 08:41:32,013 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-02-02 08:41:32,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-02-02 08:41:32,020 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:41:32,020 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:41:32,020 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrchrErr4RequiresViolation, cstrchrErr2RequiresViolation, cstrchrErr5RequiresViolation, cstrchrErr3RequiresViolation, cstrchrErr1RequiresViolation, cstrchrErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:41:32,023 INFO L82 PathProgramCache]: Analyzing trace with hash 797989968, now seen corresponding path program 1 times [2018-02-02 08:41:32,024 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:41:32,024 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:41:32,054 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:41:32,054 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:41:32,054 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:41:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:41:32,091 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:41:32,142 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 08:41:32,144 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:41:32,144 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 08:41:32,145 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 08:41:32,153 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 08:41:32,153 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 08:41:32,155 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 4 states. [2018-02-02 08:41:32,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:41:32,224 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-02-02 08:41:32,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 08:41:32,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-02-02 08:41:32,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:41:32,232 INFO L225 Difference]: With dead ends: 40 [2018-02-02 08:41:32,232 INFO L226 Difference]: Without dead ends: 37 [2018-02-02 08:41:32,233 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 08:41:32,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-02-02 08:41:32,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-02-02 08:41:32,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-02-02 08:41:32,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-02-02 08:41:32,298 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 10 [2018-02-02 08:41:32,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:41:32,298 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-02-02 08:41:32,298 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 08:41:32,298 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-02-02 08:41:32,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-02-02 08:41:32,298 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:41:32,299 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:41:32,299 INFO L371 AbstractCegarLoop]: === Iteration 2 === [cstrchrErr4RequiresViolation, cstrchrErr2RequiresViolation, cstrchrErr5RequiresViolation, cstrchrErr3RequiresViolation, cstrchrErr1RequiresViolation, cstrchrErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:41:32,299 INFO L82 PathProgramCache]: Analyzing trace with hash 797989969, now seen corresponding path program 1 times [2018-02-02 08:41:32,299 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:41:32,299 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:41:32,300 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:41:32,300 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:41:32,301 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:41:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:41:32,311 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:41:32,378 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 08:41:32,379 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:41:32,379 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 08:41:32,380 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 08:41:32,381 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 08:41:32,381 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 08:41:32,381 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 5 states. [2018-02-02 08:41:32,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:41:32,426 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2018-02-02 08:41:32,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 08:41:32,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-02-02 08:41:32,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:41:32,427 INFO L225 Difference]: With dead ends: 36 [2018-02-02 08:41:32,427 INFO L226 Difference]: Without dead ends: 36 [2018-02-02 08:41:32,428 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-02-02 08:41:32,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-02-02 08:41:32,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-02-02 08:41:32,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-02-02 08:41:32,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2018-02-02 08:41:32,434 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 10 [2018-02-02 08:41:32,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:41:32,434 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2018-02-02 08:41:32,435 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 08:41:32,435 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2018-02-02 08:41:32,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-02 08:41:32,435 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:41:32,435 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:41:32,435 INFO L371 AbstractCegarLoop]: === Iteration 3 === [cstrchrErr4RequiresViolation, cstrchrErr2RequiresViolation, cstrchrErr5RequiresViolation, cstrchrErr3RequiresViolation, cstrchrErr1RequiresViolation, cstrchrErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:41:32,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1840539991, now seen corresponding path program 1 times [2018-02-02 08:41:32,436 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:41:32,436 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:41:32,436 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:41:32,437 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:41:32,437 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:41:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:41:32,448 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:41:32,474 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 08:41:32,474 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:41:32,475 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 08:41:32,475 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 08:41:32,475 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 08:41:32,475 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 08:41:32,476 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 5 states. [2018-02-02 08:41:32,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:41:32,516 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2018-02-02 08:41:32,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 08:41:32,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-02-02 08:41:32,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:41:32,517 INFO L225 Difference]: With dead ends: 33 [2018-02-02 08:41:32,517 INFO L226 Difference]: Without dead ends: 33 [2018-02-02 08:41:32,517 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 08:41:32,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-02-02 08:41:32,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-02-02 08:41:32,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-02-02 08:41:32,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-02-02 08:41:32,521 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 15 [2018-02-02 08:41:32,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:41:32,521 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-02-02 08:41:32,521 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 08:41:32,521 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-02-02 08:41:32,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-02 08:41:32,522 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:41:32,522 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:41:32,522 INFO L371 AbstractCegarLoop]: === Iteration 4 === [cstrchrErr4RequiresViolation, cstrchrErr2RequiresViolation, cstrchrErr5RequiresViolation, cstrchrErr3RequiresViolation, cstrchrErr1RequiresViolation, cstrchrErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:41:32,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1840539990, now seen corresponding path program 1 times [2018-02-02 08:41:32,522 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:41:32,522 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:41:32,523 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:41:32,523 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:41:32,524 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:41:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:41:32,534 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:41:32,598 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 08:41:32,598 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:41:32,598 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-02 08:41:32,599 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-02 08:41:32,599 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-02 08:41:32,599 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-02-02 08:41:32,599 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 8 states. [2018-02-02 08:41:32,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:41:32,690 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2018-02-02 08:41:32,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-02 08:41:32,691 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-02-02 08:41:32,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:41:32,694 INFO L225 Difference]: With dead ends: 45 [2018-02-02 08:41:32,694 INFO L226 Difference]: Without dead ends: 45 [2018-02-02 08:41:32,694 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-02-02 08:41:32,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-02-02 08:41:32,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2018-02-02 08:41:32,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-02-02 08:41:32,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2018-02-02 08:41:32,699 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 15 [2018-02-02 08:41:32,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:41:32,700 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2018-02-02 08:41:32,700 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-02 08:41:32,700 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-02-02 08:41:32,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-02 08:41:32,700 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:41:32,701 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:41:32,701 INFO L371 AbstractCegarLoop]: === Iteration 5 === [cstrchrErr4RequiresViolation, cstrchrErr2RequiresViolation, cstrchrErr5RequiresViolation, cstrchrErr3RequiresViolation, cstrchrErr1RequiresViolation, cstrchrErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:41:32,701 INFO L82 PathProgramCache]: Analyzing trace with hash 985116459, now seen corresponding path program 1 times [2018-02-02 08:41:32,701 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:41:32,701 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:41:32,702 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:41:32,702 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:41:32,702 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:41:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:41:32,713 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:41:32,733 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 08:41:32,734 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:41:32,734 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 08:41:32,734 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 08:41:32,734 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 08:41:32,734 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 08:41:32,734 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 3 states. [2018-02-02 08:41:32,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:41:32,741 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2018-02-02 08:41:32,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 08:41:32,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-02-02 08:41:32,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:41:32,742 INFO L225 Difference]: With dead ends: 43 [2018-02-02 08:41:32,742 INFO L226 Difference]: Without dead ends: 43 [2018-02-02 08:41:32,742 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 08:41:32,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-02-02 08:41:32,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-02-02 08:41:32,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-02-02 08:41:32,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2018-02-02 08:41:32,746 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 20 [2018-02-02 08:41:32,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:41:32,746 INFO L432 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2018-02-02 08:41:32,746 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 08:41:32,746 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2018-02-02 08:41:32,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-02 08:41:32,747 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:41:32,747 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] [2018-02-02 08:41:32,747 INFO L371 AbstractCegarLoop]: === Iteration 6 === [cstrchrErr4RequiresViolation, cstrchrErr2RequiresViolation, cstrchrErr5RequiresViolation, cstrchrErr3RequiresViolation, cstrchrErr1RequiresViolation, cstrchrErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:41:32,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1622551342, now seen corresponding path program 1 times [2018-02-02 08:41:32,747 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:41:32,748 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:41:32,748 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:41:32,748 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:41:32,748 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:41:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:41:32,759 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:41:32,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:41:32,955 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:41:32,955 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) [2018-02-02 08:41:32,964 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 08:41:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:41:32,987 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:41:33,019 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-02-02 08:41:33,021 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 11 treesize of output 10 [2018-02-02 08:41:33,021 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 08:41:33,022 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:41:33,027 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-02-02 08:41:33,027 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2018-02-02 08:41:33,099 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2018-02-02 08:41:33,107 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 11 [2018-02-02 08:41:33,108 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-02-02 08:41:33,112 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-02-02 08:41:33,124 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-02-02 08:41:33,124 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:33 [2018-02-02 08:41:33,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:41:33,225 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:41:33,225 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2018-02-02 08:41:33,225 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-02-02 08:41:33,226 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-02-02 08:41:33,226 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2018-02-02 08:41:33,226 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 18 states. [2018-02-02 08:41:33,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:41:33,748 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2018-02-02 08:41:33,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-02-02 08:41:33,748 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22 [2018-02-02 08:41:33,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:41:33,749 INFO L225 Difference]: With dead ends: 65 [2018-02-02 08:41:33,749 INFO L226 Difference]: Without dead ends: 65 [2018-02-02 08:41:33,750 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2018-02-02 08:41:33,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-02-02 08:41:33,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 50. [2018-02-02 08:41:33,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-02-02 08:41:33,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2018-02-02 08:41:33,754 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 22 [2018-02-02 08:41:33,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:41:33,754 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2018-02-02 08:41:33,754 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-02-02 08:41:33,754 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2018-02-02 08:41:33,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-02-02 08:41:33,755 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:41:33,755 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:41:33,755 INFO L371 AbstractCegarLoop]: === Iteration 7 === [cstrchrErr4RequiresViolation, cstrchrErr2RequiresViolation, cstrchrErr5RequiresViolation, cstrchrErr3RequiresViolation, cstrchrErr1RequiresViolation, cstrchrErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:41:33,755 INFO L82 PathProgramCache]: Analyzing trace with hash 112532188, now seen corresponding path program 1 times [2018-02-02 08:41:33,756 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:41:33,756 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:41:33,756 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:41:33,757 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:41:33,757 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:41:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:41:33,768 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:41:33,802 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 08:41:33,802 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:41:33,802 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 08:41:33,802 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 08:41:33,803 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 08:41:33,803 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 08:41:33,803 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 4 states. [2018-02-02 08:41:33,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:41:33,842 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2018-02-02 08:41:33,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 08:41:33,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-02-02 08:41:33,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:41:33,843 INFO L225 Difference]: With dead ends: 49 [2018-02-02 08:41:33,843 INFO L226 Difference]: Without dead ends: 39 [2018-02-02 08:41:33,843 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 08:41:33,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-02-02 08:41:33,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-02-02 08:41:33,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-02-02 08:41:33,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2018-02-02 08:41:33,845 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 27 [2018-02-02 08:41:33,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:41:33,845 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2018-02-02 08:41:33,845 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 08:41:33,845 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2018-02-02 08:41:33,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-02-02 08:41:33,845 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:41:33,845 INFO L351 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:41:33,846 INFO L371 AbstractCegarLoop]: === Iteration 8 === [cstrchrErr4RequiresViolation, cstrchrErr2RequiresViolation, cstrchrErr5RequiresViolation, cstrchrErr3RequiresViolation, cstrchrErr1RequiresViolation, cstrchrErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:41:33,846 INFO L82 PathProgramCache]: Analyzing trace with hash 622344746, now seen corresponding path program 2 times [2018-02-02 08:41:33,846 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:41:33,846 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:41:33,846 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:41:33,846 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:41:33,846 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:41:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:41:33,860 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:41:34,070 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:41:34,071 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:41:34,071 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 08:41:34,075 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 08:41:34,083 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:41:34,086 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:41:34,087 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 08:41:34,089 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:41:34,091 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 08:41:34,092 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:41:34,093 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:41:34,093 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-02-02 08:41:34,114 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-02-02 08:41:34,116 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 13 treesize of output 12 [2018-02-02 08:41:34,116 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 08:41:34,117 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:41:34,120 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:41:34,120 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2018-02-02 08:41:34,207 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-02-02 08:41:34,213 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 13 [2018-02-02 08:41:34,213 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-02-02 08:41:34,215 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-02-02 08:41:34,228 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-02-02 08:41:34,228 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:38, output treesize:49 [2018-02-02 08:41:34,290 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:41:34,307 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:41:34,307 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-02-02 08:41:34,307 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-02-02 08:41:34,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-02-02 08:41:34,307 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2018-02-02 08:41:34,308 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 20 states. [2018-02-02 08:41:34,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:41:34,784 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-02-02 08:41:34,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-02-02 08:41:34,784 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 29 [2018-02-02 08:41:34,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:41:34,784 INFO L225 Difference]: With dead ends: 37 [2018-02-02 08:41:34,784 INFO L226 Difference]: Without dead ends: 0 [2018-02-02 08:41:34,785 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=820, Unknown=0, NotChecked=0, Total=992 [2018-02-02 08:41:34,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-02 08:41:34,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-02 08:41:34,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-02 08:41:34,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-02 08:41:34,785 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2018-02-02 08:41:34,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:41:34,785 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-02 08:41:34,785 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-02-02 08:41:34,786 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-02 08:41:34,786 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-02 08:41:34,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 08:41:34 BoogieIcfgContainer [2018-02-02 08:41:34,789 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 08:41:34,790 INFO L168 Benchmark]: Toolchain (without parser) took 3203.10 ms. Allocated memory was 400.6 MB in the beginning and 664.3 MB in the end (delta: 263.7 MB). Free memory was 355.9 MB in the beginning and 483.3 MB in the end (delta: -127.4 MB). Peak memory consumption was 136.3 MB. Max. memory is 5.3 GB. [2018-02-02 08:41:34,791 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 400.6 MB. Free memory is still 361.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 08:41:34,791 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.26 ms. Allocated memory is still 400.6 MB. Free memory was 354.6 MB in the beginning and 345.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 5.3 GB. [2018-02-02 08:41:34,792 INFO L168 Benchmark]: Boogie Preprocessor took 22.61 ms. Allocated memory is still 400.6 MB. Free memory was 345.4 MB in the beginning and 342.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-02 08:41:34,792 INFO L168 Benchmark]: RCFGBuilder took 183.84 ms. Allocated memory is still 400.6 MB. Free memory was 342.7 MB in the beginning and 325.5 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 5.3 GB. [2018-02-02 08:41:34,792 INFO L168 Benchmark]: TraceAbstraction took 2837.64 ms. Allocated memory was 400.6 MB in the beginning and 664.3 MB in the end (delta: 263.7 MB). Free memory was 325.5 MB in the beginning and 483.3 MB in the end (delta: -157.8 MB). Peak memory consumption was 105.9 MB. Max. memory is 5.3 GB. [2018-02-02 08:41:34,793 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 400.6 MB. Free memory is still 361.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 156.26 ms. Allocated memory is still 400.6 MB. Free memory was 354.6 MB in the beginning and 345.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 22.61 ms. Allocated memory is still 400.6 MB. Free memory was 345.4 MB in the beginning and 342.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 183.84 ms. Allocated memory is still 400.6 MB. Free memory was 342.7 MB in the beginning and 325.5 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2837.64 ms. Allocated memory was 400.6 MB in the beginning and 664.3 MB in the end (delta: 263.7 MB). Free memory was 325.5 MB in the beginning and 483.3 MB in the end (delta: -157.8 MB). Peak memory consumption was 105.9 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: 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: 546]: 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 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 41 locations, 9 error locations. SAFE Result, 2.7s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 232 SDtfs, 428 SDslu, 642 SDs, 0 SdLazy, 667 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred 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, 8 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 199 NumberOfCodeBlocks, 199 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 189 ConstructedInterpolants, 15 QuantifiedInterpolants, 36713 SizeOfPredicates, 14 NumberOfNonLiveVariables, 195 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 4/28 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/cstrchr-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_08-41-34-799.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrchr-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_08-41-34-799.csv Received shutdown request...