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/stroeder2-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c17473d-m [2018-02-04 17:38:03,623 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 17:38:03,624 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 17:38:03,637 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 17:38:03,638 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 17:38:03,638 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 17:38:03,639 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 17:38:03,641 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 17:38:03,643 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 17:38:03,643 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 17:38:03,644 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 17:38:03,644 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 17:38:03,645 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 17:38:03,646 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 17:38:03,647 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 17:38:03,649 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 17:38:03,650 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 17:38:03,652 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 17:38:03,652 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 17:38:03,653 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 17:38:03,655 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-04 17:38:03,655 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-04 17:38:03,655 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-04 17:38:03,656 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-04 17:38:03,657 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-04 17:38:03,658 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-04 17:38:03,658 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-04 17:38:03,658 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-04 17:38:03,659 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-04 17:38:03,659 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 17:38:03,659 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 17:38:03,660 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 17:38:03,669 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 17:38:03,670 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 17:38:03,671 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 17:38:03,671 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 17:38:03,671 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 17:38:03,671 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 17:38:03,671 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 17:38:03,672 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 17:38:03,672 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 17:38:03,672 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 17:38:03,672 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 17:38:03,672 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 17:38:03,672 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 17:38:03,673 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 17:38:03,673 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 17:38:03,673 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 17:38:03,673 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 17:38:03,673 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 17:38:03,673 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 17:38:03,674 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 17:38:03,674 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 17:38:03,674 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-04 17:38:03,674 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-04 17:38:03,674 INFO L133 SettingsManager]: * Trace refinement strategy=SMTINTERPOL [2018-02-04 17:38:03,704 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 17:38:03,713 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 17:38:03,716 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 17:38:03,718 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 17:38:03,718 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 17:38:03,719 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/stroeder2-alloca_true-valid-memsafety_true-termination.i [2018-02-04 17:38:03,856 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 17:38:03,858 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 17:38:03,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 17:38:03,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 17:38:03,864 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 17:38:03,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 05:38:03" (1/1) ... [2018-02-04 17:38:03,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1482aa0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 05:38:03, skipping insertion in model container [2018-02-04 17:38:03,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 05:38:03" (1/1) ... [2018-02-04 17:38:03,882 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 17:38:03,912 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 17:38:03,999 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 17:38:04,010 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 17:38:04,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 05:38:04 WrapperNode [2018-02-04 17:38:04,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 17:38:04,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 17:38:04,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 17:38:04,015 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 17:38:04,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 05:38:04" (1/1) ... [2018-02-04 17:38:04,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 05:38:04" (1/1) ... [2018-02-04 17:38:04,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 05:38:04" (1/1) ... [2018-02-04 17:38:04,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 05:38:04" (1/1) ... [2018-02-04 17:38:04,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 05:38:04" (1/1) ... [2018-02-04 17:38:04,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 05:38:04" (1/1) ... [2018-02-04 17:38:04,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 05:38:04" (1/1) ... [2018-02-04 17:38:04,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 17:38:04,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 17:38:04,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 17:38:04,037 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 17:38:04,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 05:38:04" (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 17:38:04,073 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 17:38:04,073 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 17:38:04,074 INFO L136 BoogieDeclarations]: Found implementation of procedure sumOfThirdBytes [2018-02-04 17:38:04,074 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 17:38:04,074 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-04 17:38:04,074 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-04 17:38:04,074 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 17:38:04,074 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 17:38:04,075 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 17:38:04,075 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 17:38:04,075 INFO L128 BoogieDeclarations]: Found specification of procedure sumOfThirdBytes [2018-02-04 17:38:04,075 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 17:38:04,075 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 17:38:04,075 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 17:38:04,196 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 17:38:04,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 05:38:04 BoogieIcfgContainer [2018-02-04 17:38:04,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 17:38:04,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 17:38:04,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 17:38:04,199 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 17:38:04,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 05:38:03" (1/3) ... [2018-02-04 17:38:04,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e68003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 05:38:04, skipping insertion in model container [2018-02-04 17:38:04,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 05:38:04" (2/3) ... [2018-02-04 17:38:04,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e68003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 05:38:04, skipping insertion in model container [2018-02-04 17:38:04,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 05:38:04" (3/3) ... [2018-02-04 17:38:04,202 INFO L107 eAbstractionObserver]: Analyzing ICFG stroeder2-alloca_true-valid-memsafety_true-termination.i [2018-02-04 17:38:04,207 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-04 17:38:04,212 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-02-04 17:38:04,242 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 17:38:04,242 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 17:38:04,242 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-04 17:38:04,243 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-04 17:38:04,243 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 17:38:04,243 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 17:38:04,243 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 17:38:04,243 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 17:38:04,244 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 17:38:04,253 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-02-04 17:38:04,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-04 17:38:04,261 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 17:38:04,262 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 17:38:04,262 INFO L371 AbstractCegarLoop]: === Iteration 1 === [sumOfThirdBytesErr1RequiresViolation, sumOfThirdBytesErr4RequiresViolation, sumOfThirdBytesErr5RequiresViolation, sumOfThirdBytesErr0RequiresViolation, sumOfThirdBytesErr3RequiresViolation, sumOfThirdBytesErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 17:38:04,266 INFO L82 PathProgramCache]: Analyzing trace with hash -55325045, now seen corresponding path program 1 times [2018-02-04 17:38:04,267 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 17:38:04,267 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 17:38:04,301 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:38:04,301 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 17:38:04,301 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:38:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 17:38:04,346 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 17:38:04,424 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 17:38:04,425 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 17:38:04,425 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 17:38:04,426 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 17:38:04,439 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 17:38:04,440 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 17:38:04,442 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 7 states. [2018-02-04 17:38:04,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 17:38:04,647 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-02-04 17:38:04,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 17:38:04,648 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-02-04 17:38:04,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 17:38:04,656 INFO L225 Difference]: With dead ends: 40 [2018-02-04 17:38:04,656 INFO L226 Difference]: Without dead ends: 37 [2018-02-04 17:38:04,658 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-02-04 17:38:04,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-02-04 17:38:04,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2018-02-04 17:38:04,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-02-04 17:38:04,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2018-02-04 17:38:04,682 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 15 [2018-02-04 17:38:04,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 17:38:04,682 INFO L432 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2018-02-04 17:38:04,683 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 17:38:04,683 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2018-02-04 17:38:04,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-04 17:38:04,683 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 17:38:04,683 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 17:38:04,683 INFO L371 AbstractCegarLoop]: === Iteration 2 === [sumOfThirdBytesErr1RequiresViolation, sumOfThirdBytesErr4RequiresViolation, sumOfThirdBytesErr5RequiresViolation, sumOfThirdBytesErr0RequiresViolation, sumOfThirdBytesErr3RequiresViolation, sumOfThirdBytesErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 17:38:04,684 INFO L82 PathProgramCache]: Analyzing trace with hash -55325044, now seen corresponding path program 1 times [2018-02-04 17:38:04,684 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 17:38:04,684 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 17:38:04,685 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:38:04,685 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 17:38:04,685 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:38:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 17:38:04,702 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 17:38:04,804 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 17:38:04,804 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 17:38:04,805 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 17:38:04,806 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 17:38:04,807 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 17:38:04,807 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 17:38:04,807 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 7 states. [2018-02-04 17:38:04,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 17:38:04,968 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2018-02-04 17:38:04,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-04 17:38:04,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-02-04 17:38:04,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 17:38:04,970 INFO L225 Difference]: With dead ends: 50 [2018-02-04 17:38:04,970 INFO L226 Difference]: Without dead ends: 50 [2018-02-04 17:38:04,971 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-02-04 17:38:04,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-02-04 17:38:04,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2018-02-04 17:38:04,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-02-04 17:38:04,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-02-04 17:38:04,977 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 15 [2018-02-04 17:38:04,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 17:38:04,977 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-02-04 17:38:04,977 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 17:38:04,977 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-02-04 17:38:04,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 17:38:04,978 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 17:38:04,978 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 17:38:04,978 INFO L371 AbstractCegarLoop]: === Iteration 3 === [sumOfThirdBytesErr1RequiresViolation, sumOfThirdBytesErr4RequiresViolation, sumOfThirdBytesErr5RequiresViolation, sumOfThirdBytesErr0RequiresViolation, sumOfThirdBytesErr3RequiresViolation, sumOfThirdBytesErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 17:38:04,978 INFO L82 PathProgramCache]: Analyzing trace with hash -195737667, now seen corresponding path program 1 times [2018-02-04 17:38:04,979 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 17:38:04,979 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 17:38:04,980 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:38:04,980 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 17:38:04,980 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:38:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 17:38:04,998 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 17:38:05,046 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 17:38:05,046 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 17:38:05,046 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 17:38:05,046 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 17:38:05,047 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 17:38:05,047 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 17:38:05,047 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2018-02-04 17:38:05,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 17:38:05,074 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2018-02-04 17:38:05,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 17:38:05,075 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-02-04 17:38:05,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 17:38:05,076 INFO L225 Difference]: With dead ends: 45 [2018-02-04 17:38:05,076 INFO L226 Difference]: Without dead ends: 42 [2018-02-04 17:38:05,076 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 17:38:05,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-02-04 17:38:05,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-02-04 17:38:05,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-02-04 17:38:05,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-02-04 17:38:05,080 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 20 [2018-02-04 17:38:05,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 17:38:05,080 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-02-04 17:38:05,080 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 17:38:05,080 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-02-04 17:38:05,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-04 17:38:05,081 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 17:38:05,081 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 17:38:05,081 INFO L371 AbstractCegarLoop]: === Iteration 4 === [sumOfThirdBytesErr1RequiresViolation, sumOfThirdBytesErr4RequiresViolation, sumOfThirdBytesErr5RequiresViolation, sumOfThirdBytesErr0RequiresViolation, sumOfThirdBytesErr3RequiresViolation, sumOfThirdBytesErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 17:38:05,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1506152513, now seen corresponding path program 1 times [2018-02-04 17:38:05,081 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 17:38:05,082 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 17:38:05,082 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:38:05,083 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 17:38:05,083 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:38:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 17:38:05,094 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 17:38:05,167 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 17:38:05,167 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 17:38:05,167 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-02-04 17:38:05,168 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 17:38:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 17:38:05,186 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 17:38:05,225 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 17:38:05,225 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-04 17:38:05,226 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 13 [2018-02-04 17:38:05,226 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-02-04 17:38:05,226 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-02-04 17:38:05,226 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-02-04 17:38:05,227 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 13 states. [2018-02-04 17:38:05,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 17:38:05,397 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2018-02-04 17:38:05,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-04 17:38:05,397 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 21 [2018-02-04 17:38:05,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 17:38:05,398 INFO L225 Difference]: With dead ends: 65 [2018-02-04 17:38:05,399 INFO L226 Difference]: Without dead ends: 65 [2018-02-04 17:38:05,399 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-02-04 17:38:05,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-02-04 17:38:05,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2018-02-04 17:38:05,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-02-04 17:38:05,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2018-02-04 17:38:05,402 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 21 [2018-02-04 17:38:05,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 17:38:05,402 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2018-02-04 17:38:05,402 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-02-04 17:38:05,402 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2018-02-04 17:38:05,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-04 17:38:05,403 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 17:38:05,403 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 17:38:05,403 INFO L371 AbstractCegarLoop]: === Iteration 5 === [sumOfThirdBytesErr1RequiresViolation, sumOfThirdBytesErr4RequiresViolation, sumOfThirdBytesErr5RequiresViolation, sumOfThirdBytesErr0RequiresViolation, sumOfThirdBytesErr3RequiresViolation, sumOfThirdBytesErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 17:38:05,403 INFO L82 PathProgramCache]: Analyzing trace with hash 226288835, now seen corresponding path program 1 times [2018-02-04 17:38:05,403 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 17:38:05,403 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 17:38:05,404 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:38:05,404 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 17:38:05,404 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:38:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 17:38:05,414 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 17:38:05,536 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 17:38:05,537 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 17:38:05,537 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-02-04 17:38:05,537 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 17:38:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 17:38:05,557 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 17:38:05,576 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 17:38:05,577 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 17:38:05,580 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-04 17:38:05,580 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-02-04 17:38:05,781 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 17:38:05,781 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 17:38:05,781 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2018-02-04 17:38:05,781 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-02-04 17:38:05,782 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-02-04 17:38:05,782 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2018-02-04 17:38:05,782 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 18 states. [2018-02-04 17:38:06,156 WARN L146 SmtUtils]: Spent 262ms on a formula simplification. DAG size of input: 47 DAG size of output 39 [2018-02-04 17:38:06,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 17:38:06,287 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2018-02-04 17:38:06,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-04 17:38:06,288 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2018-02-04 17:38:06,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 17:38:06,288 INFO L225 Difference]: With dead ends: 63 [2018-02-04 17:38:06,288 INFO L226 Difference]: Without dead ends: 63 [2018-02-04 17:38:06,289 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2018-02-04 17:38:06,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-02-04 17:38:06,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 50. [2018-02-04 17:38:06,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-02-04 17:38:06,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2018-02-04 17:38:06,293 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 21 [2018-02-04 17:38:06,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 17:38:06,294 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2018-02-04 17:38:06,294 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-02-04 17:38:06,294 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2018-02-04 17:38:06,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-02-04 17:38:06,295 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 17:38:06,295 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 17:38:06,295 INFO L371 AbstractCegarLoop]: === Iteration 6 === [sumOfThirdBytesErr1RequiresViolation, sumOfThirdBytesErr4RequiresViolation, sumOfThirdBytesErr5RequiresViolation, sumOfThirdBytesErr0RequiresViolation, sumOfThirdBytesErr3RequiresViolation, sumOfThirdBytesErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 17:38:06,295 INFO L82 PathProgramCache]: Analyzing trace with hash 308334376, now seen corresponding path program 1 times [2018-02-04 17:38:06,295 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 17:38:06,295 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 17:38:06,296 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:38:06,296 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 17:38:06,296 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 17:38:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 17:38:06,306 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 17:38:06,311 INFO L430 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown lemma type! [2018-02-04 17:38:06,312 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 17:38:06,312 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-02-04 17:38:06,312 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 17:38:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 17:38:06,326 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 17:38:06,339 INFO L700 Elim1Store]: detected not equals via solver [2018-02-04 17:38:06,341 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 17:38:06,341 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 17:38:06,342 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 17:38:06,342 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-02-04 17:38:06,354 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 17:38:06,357 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 17:38:06,358 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 17:38:06,358 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 17:38:06,358 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 17:38:06,358 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 17:38:06,358 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2018-02-04 17:38:06,358 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 6 states. [2018-02-04 17:38:06,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 17:38:06,399 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2018-02-04 17:38:06,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 17:38:06,399 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-02-04 17:38:06,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 17:38:06,400 INFO L225 Difference]: With dead ends: 49 [2018-02-04 17:38:06,400 INFO L226 Difference]: Without dead ends: 0 [2018-02-04 17:38:06,400 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 17:38:06,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-04 17:38:06,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-04 17:38:06,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-04 17:38:06,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-04 17:38:06,400 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2018-02-04 17:38:06,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 17:38:06,401 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-04 17:38:06,401 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 17:38:06,401 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-04 17:38:06,401 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-04 17:38:06,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 05:38:06 BoogieIcfgContainer [2018-02-04 17:38:06,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 17:38:06,404 INFO L168 Benchmark]: Toolchain (without parser) took 2547.58 ms. Allocated memory was 402.1 MB in the beginning and 623.9 MB in the end (delta: 221.8 MB). Free memory was 360.3 MB in the beginning and 500.6 MB in the end (delta: -140.2 MB). Peak memory consumption was 81.5 MB. Max. memory is 5.3 GB. [2018-02-04 17:38:06,405 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 402.1 MB. Free memory is still 365.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 17:38:06,405 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.11 ms. Allocated memory is still 402.1 MB. Free memory was 359.0 MB in the beginning and 349.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 5.3 GB. [2018-02-04 17:38:06,405 INFO L168 Benchmark]: Boogie Preprocessor took 21.64 ms. Allocated memory is still 402.1 MB. Free memory was 349.7 MB in the beginning and 347.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-04 17:38:06,406 INFO L168 Benchmark]: RCFGBuilder took 159.82 ms. Allocated memory is still 402.1 MB. Free memory was 347.1 MB in the beginning and 330.3 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 5.3 GB. [2018-02-04 17:38:06,406 INFO L168 Benchmark]: TraceAbstraction took 2207.05 ms. Allocated memory was 402.1 MB in the beginning and 623.9 MB in the end (delta: 221.8 MB). Free memory was 330.3 MB in the beginning and 500.6 MB in the end (delta: -170.3 MB). Peak memory consumption was 51.5 MB. Max. memory is 5.3 GB. [2018-02-04 17:38:06,406 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 402.1 MB. Free memory is still 365.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 156.11 ms. Allocated memory is still 402.1 MB. Free memory was 359.0 MB in the beginning and 349.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 21.64 ms. Allocated memory is still 402.1 MB. Free memory was 349.7 MB in the beginning and 347.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 159.82 ms. Allocated memory is still 402.1 MB. Free memory was 347.1 MB in the beginning and 330.3 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2207.05 ms. Allocated memory was 402.1 MB in the beginning and 623.9 MB in the end (delta: 221.8 MB). Free memory was 330.3 MB in the beginning and 500.6 MB in the end (delta: -170.3 MB). Peak memory consumption was 51.5 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: 555]: 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, 2.1s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 164 SDtfs, 378 SDslu, 632 SDs, 0 SdLazy, 415 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.0s 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, 33 StatesRemovedByMinimization, 5 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, 20860 SizeOfPredicates, 14 NumberOfNonLiveVariables, 266 ConjunctsInSsa, 34 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/stroeder2-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_17-38-06-412.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/stroeder2-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-04_17-38-06-412.csv Received shutdown request...