java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf -i ../../../trunk/examples/svcomp/array-memsafety/array01-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c17473d-m [2018-02-04 17:16:54,374 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 17:16:54,375 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 17:16:54,390 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 17:16:54,390 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 17:16:54,391 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 17:16:54,392 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 17:16:54,394 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 17:16:54,396 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 17:16:54,397 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 17:16:54,398 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 17:16:54,398 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 17:16:54,399 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 17:16:54,400 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 17:16:54,401 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 17:16:54,403 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 17:16:54,405 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 17:16:54,406 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 17:16:54,408 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 17:16:54,409 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 17:16:54,411 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 17:16:54,415 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 17:16:54,416 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 17:16:54,416 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf [2018-02-04 17:16:54,426 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 17:16:54,426 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 17:16:54,427 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 17:16:54,427 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 17:16:54,427 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 17:16:54,428 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 17:16:54,428 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 17:16:54,428 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 17:16:54,428 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 17:16:54,428 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 17:16:54,428 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 17:16:54,428 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 17:16:54,428 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 17:16:54,428 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 17:16:54,428 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 17:16:54,429 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 17:16:54,429 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 17:16:54,429 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 17:16:54,429 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 17:16:54,429 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 17:16:54,429 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 17:16:54,429 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-04 17:16:54,429 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-04 17:16:54,430 INFO L133 SettingsManager]: * Trace refinement strategy=SMTINTERPOL [2018-02-04 17:16:54,456 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 17:16:54,464 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 17:16:54,467 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 17:16:54,468 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 17:16:54,468 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 17:16:54,469 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/array01-alloca_true-valid-memsafety_true-termination.i [2018-02-04 17:16:54,582 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 17:16:54,583 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 17:16:54,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 17:16:54,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 17:16:54,588 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 17:16:54,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 05:16:54" (1/1) ... [2018-02-04 17:16:54,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f51d34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 05:16:54, skipping insertion in model container [2018-02-04 17:16:54,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 05:16:54" (1/1) ... [2018-02-04 17:16:54,600 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 17:16:54,631 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 17:16:54,717 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 17:16:54,731 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 17:16:54,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 05:16:54 WrapperNode [2018-02-04 17:16:54,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 17:16:54,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 17:16:54,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 17:16:54,738 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 17:16:54,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 05:16:54" (1/1) ... [2018-02-04 17:16:54,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 05:16:54" (1/1) ... [2018-02-04 17:16:54,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 05:16:54" (1/1) ... [2018-02-04 17:16:54,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 05:16:54" (1/1) ... [2018-02-04 17:16:54,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 05:16:54" (1/1) ... [2018-02-04 17:16:54,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 05:16:54" (1/1) ... [2018-02-04 17:16:54,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 05:16:54" (1/1) ... [2018-02-04 17:16:54,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 17:16:54,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 17:16:54,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 17:16:54,766 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 17:16:54,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 05:16:54" (1/1) ... No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 17:16:54,803 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 17:16:54,803 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 17:16:54,803 INFO L136 BoogieDeclarations]: Found implementation of procedure test_fun [2018-02-04 17:16:54,803 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 17:16:54,804 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-04 17:16:54,804 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-04 17:16:54,804 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 17:16:54,804 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 17:16:54,804 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 17:16:54,804 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 17:16:54,804 INFO L128 BoogieDeclarations]: Found specification of procedure test_fun [2018-02-04 17:16:54,804 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 17:16:54,805 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 17:16:54,805 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 17:16:54,950 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 17:16:54,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 05:16:54 BoogieIcfgContainer [2018-02-04 17:16:54,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 17:16:54,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 17:16:54,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 17:16:54,953 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 17:16:54,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 05:16:54" (1/3) ... [2018-02-04 17:16:54,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41af72e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 05:16:54, skipping insertion in model container [2018-02-04 17:16:54,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 05:16:54" (2/3) ... [2018-02-04 17:16:54,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41af72e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 05:16:54, skipping insertion in model container [2018-02-04 17:16:54,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 05:16:54" (3/3) ... [2018-02-04 17:16:54,955 INFO L107 eAbstractionObserver]: Analyzing ICFG array01-alloca_true-valid-memsafety_true-termination.i [2018-02-04 17:16:54,960 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-04 17:16:54,964 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-02-04 17:16:54,994 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 17:16:54,994 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 17:16:54,994 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-04 17:16:54,994 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-04 17:16:54,994 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 17:16:54,994 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 17:16:54,995 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 17:16:54,995 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 17:16:54,995 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 17:16:55,008 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-02-04 17:16:55,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-04 17:16:55,017 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 17:16:55,018 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 17:16:55,019 INFO L371 AbstractCegarLoop]: === Iteration 1 === [test_funErr4RequiresViolation, test_funErr5RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 17:16:55,021 INFO L82 PathProgramCache]: Analyzing trace with hash -55325045, now seen corresponding path program 1 times [2018-02-04 17:16:55,023 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 17:16:55,023 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 17:16:55,053 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:16:55,053 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 17:16:55,053 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:16:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 17:16:55,098 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 17:16:55,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 17:16:55,191 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 17:16:55,192 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 17:16:55,193 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 17:16:55,201 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 17:16:55,201 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-04 17:16:55,203 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 6 states. [2018-02-04 17:16:55,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 17:16:55,305 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-02-04 17:16:55,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 17:16:55,306 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-02-04 17:16:55,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 17:16:55,313 INFO L225 Difference]: With dead ends: 35 [2018-02-04 17:16:55,313 INFO L226 Difference]: Without dead ends: 32 [2018-02-04 17:16:55,315 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-02-04 17:16:55,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-02-04 17:16:55,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-02-04 17:16:55,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-02-04 17:16:55,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2018-02-04 17:16:55,386 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 15 [2018-02-04 17:16:55,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 17:16:55,386 INFO L432 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2018-02-04 17:16:55,386 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 17:16:55,386 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2018-02-04 17:16:55,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-04 17:16:55,387 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 17:16:55,387 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 17:16:55,387 INFO L371 AbstractCegarLoop]: === Iteration 2 === [test_funErr4RequiresViolation, test_funErr5RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 17:16:55,387 INFO L82 PathProgramCache]: Analyzing trace with hash -55325044, now seen corresponding path program 1 times [2018-02-04 17:16:55,387 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 17:16:55,387 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 17:16:55,388 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:16:55,388 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 17:16:55,388 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:16:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 17:16:55,404 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 17:16:55,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 17:16:55,495 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 17:16:55,495 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 17:16:55,497 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 17:16:55,497 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 17:16:55,497 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-02-04 17:16:55,497 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 7 states. [2018-02-04 17:16:55,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 17:16:55,610 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2018-02-04 17:16:55,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 17:16:55,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-02-04 17:16:55,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 17:16:55,620 INFO L225 Difference]: With dead ends: 45 [2018-02-04 17:16:55,620 INFO L226 Difference]: Without dead ends: 45 [2018-02-04 17:16:55,621 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-02-04 17:16:55,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-02-04 17:16:55,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2018-02-04 17:16:55,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-02-04 17:16:55,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-02-04 17:16:55,624 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 15 [2018-02-04 17:16:55,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 17:16:55,624 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-02-04 17:16:55,625 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 17:16:55,625 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-02-04 17:16:55,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 17:16:55,625 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 17:16:55,625 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 17:16:55,625 INFO L371 AbstractCegarLoop]: === Iteration 3 === [test_funErr4RequiresViolation, test_funErr5RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 17:16:55,625 INFO L82 PathProgramCache]: Analyzing trace with hash -195737667, now seen corresponding path program 1 times [2018-02-04 17:16:55,625 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 17:16:55,626 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 17:16:55,626 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:16:55,626 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 17:16:55,626 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:16:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 17:16:55,638 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 17:16:55,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 17:16:55,673 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 17:16:55,673 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 17:16:55,674 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 17:16:55,674 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 17:16:55,674 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 17:16:55,674 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2018-02-04 17:16:55,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 17:16:55,706 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2018-02-04 17:16:55,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 17:16:55,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-02-04 17:16:55,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 17:16:55,707 INFO L225 Difference]: With dead ends: 45 [2018-02-04 17:16:55,707 INFO L226 Difference]: Without dead ends: 42 [2018-02-04 17:16:55,707 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-04 17:16:55,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-02-04 17:16:55,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-02-04 17:16:55,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-02-04 17:16:55,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-02-04 17:16:55,710 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 20 [2018-02-04 17:16:55,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 17:16:55,710 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-02-04 17:16:55,711 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 17:16:55,711 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-02-04 17:16:55,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-04 17:16:55,711 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 17:16:55,711 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 17:16:55,711 INFO L371 AbstractCegarLoop]: === Iteration 4 === [test_funErr4RequiresViolation, test_funErr5RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 17:16:55,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1506152513, now seen corresponding path program 1 times [2018-02-04 17:16:55,711 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 17:16:55,712 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 17:16:55,712 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:16:55,712 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 17:16:55,712 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:16:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 17:16:55,725 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 17:16:55,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 17:16:55,801 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 17:16:55,801 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-02-04 17:16:55,802 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 17:16:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 17:16:55,822 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 17:16:55,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 17:16:55,879 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-04 17:16:55,879 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 12 [2018-02-04 17:16:55,880 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-02-04 17:16:55,880 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-02-04 17:16:55,880 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-02-04 17:16:55,880 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 12 states. [2018-02-04 17:16:55,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 17:16:55,988 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2018-02-04 17:16:55,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-04 17:16:55,989 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2018-02-04 17:16:55,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 17:16:55,990 INFO L225 Difference]: With dead ends: 65 [2018-02-04 17:16:55,990 INFO L226 Difference]: Without dead ends: 65 [2018-02-04 17:16:55,991 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2018-02-04 17:16:55,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-02-04 17:16:55,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2018-02-04 17:16:55,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-02-04 17:16:55,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2018-02-04 17:16:55,996 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 21 [2018-02-04 17:16:55,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 17:16:55,997 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2018-02-04 17:16:55,997 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-02-04 17:16:55,997 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2018-02-04 17:16:55,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-04 17:16:55,997 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 17:16:55,997 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 17:16:55,997 INFO L371 AbstractCegarLoop]: === Iteration 5 === [test_funErr4RequiresViolation, test_funErr5RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 17:16:55,997 INFO L82 PathProgramCache]: Analyzing trace with hash 226288835, now seen corresponding path program 1 times [2018-02-04 17:16:55,998 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 17:16:55,998 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 17:16:55,998 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:16:55,999 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 17:16:55,999 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:16:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 17:16:56,009 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 17:16:56,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 17:16:56,105 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 17:16:56,106 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-02-04 17:16:56,106 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 17:16:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 17:16:56,120 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 17:16:56,139 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 [2018-02-04 17:16:56,140 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 17:16:56,143 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-04 17:16:56,143 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-02-04 17:16:56,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 17:16:56,304 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 17:16:56,304 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-02-04 17:16:56,304 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-02-04 17:16:56,305 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-02-04 17:16:56,305 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2018-02-04 17:16:56,305 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 16 states. [2018-02-04 17:16:56,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 17:16:56,534 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2018-02-04 17:16:56,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-04 17:16:56,534 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2018-02-04 17:16:56,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 17:16:56,535 INFO L225 Difference]: With dead ends: 58 [2018-02-04 17:16:56,535 INFO L226 Difference]: Without dead ends: 58 [2018-02-04 17:16:56,535 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2018-02-04 17:16:56,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-02-04 17:16:56,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2018-02-04 17:16:56,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-02-04 17:16:56,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2018-02-04 17:16:56,538 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 21 [2018-02-04 17:16:56,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 17:16:56,539 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2018-02-04 17:16:56,539 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-02-04 17:16:56,539 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2018-02-04 17:16:56,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-02-04 17:16:56,539 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 17:16:56,539 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] [2018-02-04 17:16:56,539 INFO L371 AbstractCegarLoop]: === Iteration 6 === [test_funErr4RequiresViolation, test_funErr5RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 17:16:56,540 INFO L82 PathProgramCache]: Analyzing trace with hash 308334376, now seen corresponding path program 1 times [2018-02-04 17:16:56,540 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 17:16:56,540 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 17:16:56,540 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:16:56,540 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 17:16:56,540 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:16:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 17:16:56,551 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 17:16:56,556 INFO L430 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown lemma type! [2018-02-04 17:16:56,556 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 17:16:56,556 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-02-04 17:16:56,557 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 17:16:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 17:16:56,573 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 17:16:56,592 INFO L700 Elim1Store]: detected not equals via solver [2018-02-04 17:16:56,597 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 12 treesize of output 5 [2018-02-04 17:16:56,597 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 17:16:56,599 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. [2018-02-04 17:16:56,599 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-02-04 17:16:56,618 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc6.base| Int)) (and (= 0 (select |c_old(#valid)| |main_#t~malloc6.base|)) (= |c_#valid| (store |c_old(#valid)| |main_#t~malloc6.base| 0)))) is different from true [2018-02-04 17:16:56,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 17:16:56,621 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 17:16:56,621 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 17:16:56,622 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 17:16:56,622 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 17:16:56,622 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2018-02-04 17:16:56,622 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 6 states. [2018-02-04 17:16:56,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 17:16:56,658 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2018-02-04 17:16:56,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 17:16:56,659 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-02-04 17:16:56,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 17:16:56,659 INFO L225 Difference]: With dead ends: 49 [2018-02-04 17:16:56,659 INFO L226 Difference]: Without dead ends: 0 [2018-02-04 17:16:56,659 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2018-02-04 17:16:56,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-04 17:16:56,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-04 17:16:56,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-04 17:16:56,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-04 17:16:56,660 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2018-02-04 17:16:56,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 17:16:56,660 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-04 17:16:56,660 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 17:16:56,661 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-04 17:16:56,661 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-04 17:16:56,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 05:16:56 BoogieIcfgContainer [2018-02-04 17:16:56,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 17:16:56,666 INFO L168 Benchmark]: Toolchain (without parser) took 2083.68 ms. Allocated memory was 403.7 MB in the beginning and 629.1 MB in the end (delta: 225.4 MB). Free memory was 360.4 MB in the beginning and 554.6 MB in the end (delta: -194.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 5.3 GB. [2018-02-04 17:16:56,667 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 403.7 MB. Free memory is still 365.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 17:16:56,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 153.51 ms. Allocated memory is still 403.7 MB. Free memory was 360.4 MB in the beginning and 349.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-02-04 17:16:56,667 INFO L168 Benchmark]: Boogie Preprocessor took 27.68 ms. Allocated memory is still 403.7 MB. Free memory was 349.8 MB in the beginning and 347.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-04 17:16:56,667 INFO L168 Benchmark]: RCFGBuilder took 185.11 ms. Allocated memory is still 403.7 MB. Free memory was 347.2 MB in the beginning and 330.0 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 5.3 GB. [2018-02-04 17:16:56,667 INFO L168 Benchmark]: TraceAbstraction took 1714.21 ms. Allocated memory was 403.7 MB in the beginning and 629.1 MB in the end (delta: 225.4 MB). Free memory was 330.0 MB in the beginning and 554.6 MB in the end (delta: -224.6 MB). Peak memory consumption was 830.1 kB. Max. memory is 5.3 GB. [2018-02-04 17:16:56,668 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 403.7 MB. Free memory is still 365.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 153.51 ms. Allocated memory is still 403.7 MB. Free memory was 360.4 MB in the beginning and 349.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 27.68 ms. Allocated memory is still 403.7 MB. Free memory was 349.8 MB in the beginning and 347.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 185.11 ms. Allocated memory is still 403.7 MB. Free memory was 347.2 MB in the beginning and 330.0 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1714.21 ms. Allocated memory was 403.7 MB in the beginning and 629.1 MB in the end (delta: 225.4 MB). Free memory was 330.0 MB in the beginning and 554.6 MB in the end (delta: -224.6 MB). Peak memory consumption was 830.1 kB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 552]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 38 locations, 7 error locations. SAFE Result, 1.6s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 149 SDtfs, 298 SDslu, 530 SDs, 0 SdLazy, 378 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 186 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 152 ConstructedInterpolants, 25 QuantifiedInterpolants, 19996 SizeOfPredicates, 10 NumberOfNonLiveVariables, 244 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 12/18 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array01-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_17-16-56-675.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array01-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-04_17-16-56-675.csv Received shutdown request...