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/ldv-memsafety/memleaks_test3_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ccafca9-m [2018-02-04 04:18:06,785 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 04:18:06,789 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 04:18:06,802 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 04:18:06,802 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 04:18:06,803 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 04:18:06,804 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 04:18:06,805 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 04:18:06,807 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 04:18:06,808 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 04:18:06,808 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 04:18:06,809 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 04:18:06,809 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 04:18:06,810 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 04:18:06,811 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 04:18:06,813 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 04:18:06,814 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 04:18:06,815 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 04:18:06,816 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 04:18:06,817 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 04:18:06,819 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 04:18:06,822 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 04:18:06,823 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 04:18:06,823 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 04:18:06,833 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 04:18:06,833 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 04:18:06,834 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 04:18:06,834 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 04:18:06,835 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 04:18:06,835 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 04:18:06,835 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 04:18:06,835 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 04:18:06,835 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 04:18:06,836 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 04:18:06,836 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 04:18:06,836 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 04:18:06,836 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 04:18:06,836 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-04 04:18:06,836 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 04:18:06,836 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 04:18:06,837 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 04:18:06,837 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 04:18:06,837 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 04:18:06,837 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 04:18:06,837 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 04:18:06,837 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 04:18:06,838 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-04 04:18:06,838 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-04 04:18:06,838 INFO L133 SettingsManager]: * Trace refinement strategy=SMTINTERPOL [2018-02-04 04:18:06,871 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 04:18:06,884 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 04:18:06,889 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 04:18:06,892 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 04:18:06,892 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 04:18:06,893 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test3_true-valid-memsafety_true-termination.i [2018-02-04 04:18:07,049 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 04:18:07,051 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 04:18:07,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 04:18:07,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 04:18:07,058 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 04:18:07,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:18:07" (1/1) ... [2018-02-04 04:18:07,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f13972f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:07, skipping insertion in model container [2018-02-04 04:18:07,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:18:07" (1/1) ... [2018-02-04 04:18:07,076 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:18:07,114 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:18:07,201 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:18:07,211 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:18:07,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:07 WrapperNode [2018-02-04 04:18:07,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 04:18:07,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 04:18:07,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 04:18:07,216 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 04:18:07,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:07" (1/1) ... [2018-02-04 04:18:07,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:07" (1/1) ... [2018-02-04 04:18:07,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:07" (1/1) ... [2018-02-04 04:18:07,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:07" (1/1) ... [2018-02-04 04:18:07,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:07" (1/1) ... [2018-02-04 04:18:07,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:07" (1/1) ... [2018-02-04 04:18:07,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:07" (1/1) ... [2018-02-04 04:18:07,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 04:18:07,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 04:18:07,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 04:18:07,242 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 04:18:07,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:07" (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 04:18:07,282 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 04:18:07,283 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 04:18:07,283 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-02-04 04:18:07,283 INFO L136 BoogieDeclarations]: Found implementation of procedure h_safe [2018-02-04 04:18:07,283 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-02-04 04:18:07,283 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 04:18:07,283 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 04:18:07,283 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 04:18:07,283 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 04:18:07,284 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-04 04:18:07,284 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-04 04:18:07,284 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 04:18:07,284 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-02-04 04:18:07,284 INFO L128 BoogieDeclarations]: Found specification of procedure h_safe [2018-02-04 04:18:07,284 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-02-04 04:18:07,284 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 04:18:07,284 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 04:18:07,284 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 04:18:07,374 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 04:18:07,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:18:07 BoogieIcfgContainer [2018-02-04 04:18:07,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 04:18:07,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 04:18:07,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 04:18:07,377 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 04:18:07,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 04:18:07" (1/3) ... [2018-02-04 04:18:07,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d1162f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:18:07, skipping insertion in model container [2018-02-04 04:18:07,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:07" (2/3) ... [2018-02-04 04:18:07,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d1162f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:18:07, skipping insertion in model container [2018-02-04 04:18:07,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:18:07" (3/3) ... [2018-02-04 04:18:07,379 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test3_true-valid-memsafety_true-termination.i [2018-02-04 04:18:07,384 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-04 04:18:07,388 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-02-04 04:18:07,419 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 04:18:07,419 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 04:18:07,419 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-04 04:18:07,420 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-04 04:18:07,420 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 04:18:07,420 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 04:18:07,420 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 04:18:07,420 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 04:18:07,421 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 04:18:07,431 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-02-04 04:18:07,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-04 04:18:07,439 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:07,439 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:18:07,439 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:18:07,442 INFO L82 PathProgramCache]: Analyzing trace with hash -36513995, now seen corresponding path program 1 times [2018-02-04 04:18:07,443 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:07,443 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:07,494 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:07,495 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:07,495 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:07,544 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:07,661 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 04:18:07,663 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:18:07,663 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 04:18:07,665 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 04:18:07,674 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 04:18:07,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:18:07,676 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 7 states. [2018-02-04 04:18:07,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:18:07,774 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-02-04 04:18:07,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 04:18:07,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2018-02-04 04:18:07,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:18:07,785 INFO L225 Difference]: With dead ends: 38 [2018-02-04 04:18:07,785 INFO L226 Difference]: Without dead ends: 35 [2018-02-04 04:18:07,787 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:18:07,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-02-04 04:18:07,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2018-02-04 04:18:07,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-02-04 04:18:07,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2018-02-04 04:18:07,811 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 18 [2018-02-04 04:18:07,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:18:07,812 INFO L432 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2018-02-04 04:18:07,812 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 04:18:07,812 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2018-02-04 04:18:07,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-04 04:18:07,813 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:07,813 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:18:07,813 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:18:07,813 INFO L82 PathProgramCache]: Analyzing trace with hash -36513994, now seen corresponding path program 1 times [2018-02-04 04:18:07,813 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:07,813 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:07,814 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:07,815 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:07,815 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:07,829 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:07,898 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 04:18:07,899 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:18:07,899 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 04:18:07,900 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 04:18:07,900 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 04:18:07,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:18:07,900 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 7 states. [2018-02-04 04:18:07,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:18:07,957 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2018-02-04 04:18:07,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 04:18:07,958 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2018-02-04 04:18:07,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:18:07,961 INFO L225 Difference]: With dead ends: 36 [2018-02-04 04:18:07,961 INFO L226 Difference]: Without dead ends: 36 [2018-02-04 04:18:07,962 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:18:07,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-02-04 04:18:07,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2018-02-04 04:18:07,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-02-04 04:18:07,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-02-04 04:18:07,966 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 18 [2018-02-04 04:18:07,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:18:07,966 INFO L432 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-02-04 04:18:07,966 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 04:18:07,967 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-02-04 04:18:07,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 04:18:07,967 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:07,967 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 04:18:07,968 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:18:07,968 INFO L82 PathProgramCache]: Analyzing trace with hash 133826739, now seen corresponding path program 1 times [2018-02-04 04:18:07,968 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:07,968 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:07,970 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:07,970 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:07,970 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:07,984 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:08,047 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 04:18:08,048 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:18:08,048 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 04:18:08,048 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 04:18:08,049 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 04:18:08,049 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-02-04 04:18:08,049 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 8 states. [2018-02-04 04:18:08,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:18:08,105 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2018-02-04 04:18:08,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-04 04:18:08,106 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-02-04 04:18:08,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:18:08,107 INFO L225 Difference]: With dead ends: 33 [2018-02-04 04:18:08,107 INFO L226 Difference]: Without dead ends: 33 [2018-02-04 04:18:08,107 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-02-04 04:18:08,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-02-04 04:18:08,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-02-04 04:18:08,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-02-04 04:18:08,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-02-04 04:18:08,114 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 20 [2018-02-04 04:18:08,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:18:08,114 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-02-04 04:18:08,114 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 04:18:08,114 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-02-04 04:18:08,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 04:18:08,115 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:08,116 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 04:18:08,117 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:18:08,117 INFO L82 PathProgramCache]: Analyzing trace with hash 133826740, now seen corresponding path program 1 times [2018-02-04 04:18:08,117 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:08,117 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:08,118 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:08,118 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:08,119 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:08,129 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:08,194 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 04:18:08,194 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:18:08,195 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 04:18:08,195 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 04:18:08,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 04:18:08,196 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-02-04 04:18:08,196 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 8 states. [2018-02-04 04:18:08,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:18:08,273 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2018-02-04 04:18:08,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:18:08,273 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-02-04 04:18:08,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:18:08,274 INFO L225 Difference]: With dead ends: 34 [2018-02-04 04:18:08,274 INFO L226 Difference]: Without dead ends: 34 [2018-02-04 04:18:08,274 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-02-04 04:18:08,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-02-04 04:18:08,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2018-02-04 04:18:08,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-02-04 04:18:08,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-02-04 04:18:08,277 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 20 [2018-02-04 04:18:08,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:18:08,277 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-02-04 04:18:08,277 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 04:18:08,277 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-02-04 04:18:08,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 04:18:08,278 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:08,278 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 04:18:08,278 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:18:08,278 INFO L82 PathProgramCache]: Analyzing trace with hash -730055936, now seen corresponding path program 1 times [2018-02-04 04:18:08,278 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:08,278 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:08,279 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:08,279 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:08,279 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:08,285 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:08,318 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 04:18:08,318 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:18:08,318 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-04 04:18:08,318 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-04 04:18:08,319 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-04 04:18:08,319 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 04:18:08,319 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 3 states. [2018-02-04 04:18:08,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:18:08,358 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2018-02-04 04:18:08,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-04 04:18:08,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-02-04 04:18:08,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:18:08,360 INFO L225 Difference]: With dead ends: 35 [2018-02-04 04:18:08,360 INFO L226 Difference]: Without dead ends: 32 [2018-02-04 04:18:08,360 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 04:18:08,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-02-04 04:18:08,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2018-02-04 04:18:08,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-02-04 04:18:08,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-02-04 04:18:08,364 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 20 [2018-02-04 04:18:08,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:18:08,364 INFO L432 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-02-04 04:18:08,364 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-04 04:18:08,364 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-02-04 04:18:08,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-04 04:18:08,365 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:08,365 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:18:08,365 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:18:08,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1161698987, now seen corresponding path program 1 times [2018-02-04 04:18:08,365 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:08,366 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:08,367 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:08,367 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:08,367 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:08,375 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:08,426 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 04:18:08,426 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:18:08,426 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 04:18:08,427 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 04:18:08,427 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 04:18:08,427 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:18:08,427 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 7 states. [2018-02-04 04:18:08,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:18:08,439 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-02-04 04:18:08,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 04:18:08,440 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-02-04 04:18:08,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:18:08,440 INFO L225 Difference]: With dead ends: 33 [2018-02-04 04:18:08,441 INFO L226 Difference]: Without dead ends: 26 [2018-02-04 04:18:08,441 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:18:08,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-02-04 04:18:08,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-02-04 04:18:08,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-02-04 04:18:08,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-02-04 04:18:08,443 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2018-02-04 04:18:08,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:18:08,444 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-02-04 04:18:08,444 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 04:18:08,444 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-02-04 04:18:08,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-04 04:18:08,444 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:08,444 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:18:08,445 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:18:08,445 INFO L82 PathProgramCache]: Analyzing trace with hash -241367810, now seen corresponding path program 1 times [2018-02-04 04:18:08,445 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:08,445 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:08,446 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:08,446 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:08,446 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:08,454 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:08,488 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 04:18:08,488 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:18:08,488 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-04 04:18:08,488 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 04:18:08,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 04:18:08,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-02-04 04:18:08,488 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 8 states. [2018-02-04 04:18:08,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:18:08,513 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2018-02-04 04:18:08,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:18:08,514 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-02-04 04:18:08,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:18:08,514 INFO L225 Difference]: With dead ends: 24 [2018-02-04 04:18:08,514 INFO L226 Difference]: Without dead ends: 24 [2018-02-04 04:18:08,515 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-02-04 04:18:08,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-02-04 04:18:08,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-02-04 04:18:08,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-02-04 04:18:08,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2018-02-04 04:18:08,517 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 22 [2018-02-04 04:18:08,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:18:08,517 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2018-02-04 04:18:08,517 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 04:18:08,517 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2018-02-04 04:18:08,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-02-04 04:18:08,518 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:08,518 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:18:08,518 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:18:08,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1102731031, now seen corresponding path program 1 times [2018-02-04 04:18:08,518 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:08,518 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:08,520 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:08,520 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:08,520 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:08,532 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:08,539 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Unknown lemma type! at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:299) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$1(Interpolator.java:263) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:132) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:220) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:915) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackTraceAbstractionRefinementStrategy.getTraceCheck(MultiTrackTraceAbstractionRefinementStrategy.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:397) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:119) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-02-04 04:18:08,543 INFO L168 Benchmark]: Toolchain (without parser) took 1493.09 ms. Allocated memory was 393.7 MB in the beginning and 589.8 MB in the end (delta: 196.1 MB). Free memory was 350.6 MB in the beginning and 460.5 MB in the end (delta: -109.9 MB). Peak memory consumption was 86.2 MB. Max. memory is 5.3 GB. [2018-02-04 04:18:08,544 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 393.7 MB. Free memory is still 357.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 04:18:08,544 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.48 ms. Allocated memory is still 393.7 MB. Free memory was 350.6 MB in the beginning and 337.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. [2018-02-04 04:18:08,545 INFO L168 Benchmark]: Boogie Preprocessor took 25.06 ms. Allocated memory is still 393.7 MB. Free memory was 337.4 MB in the beginning and 336.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-04 04:18:08,545 INFO L168 Benchmark]: RCFGBuilder took 133.07 ms. Allocated memory is still 393.7 MB. Free memory was 336.1 MB in the beginning and 322.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. [2018-02-04 04:18:08,545 INFO L168 Benchmark]: TraceAbstraction took 1167.45 ms. Allocated memory was 393.7 MB in the beginning and 589.8 MB in the end (delta: 196.1 MB). Free memory was 322.0 MB in the beginning and 460.5 MB in the end (delta: -138.5 MB). Peak memory consumption was 57.6 MB. Max. memory is 5.3 GB. [2018-02-04 04:18:08,547 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 393.7 MB. Free memory is still 357.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 164.48 ms. Allocated memory is still 393.7 MB. Free memory was 350.6 MB in the beginning and 337.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 25.06 ms. Allocated memory is still 393.7 MB. Free memory was 337.4 MB in the beginning and 336.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 133.07 ms. Allocated memory is still 393.7 MB. Free memory was 336.1 MB in the beginning and 322.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1167.45 ms. Allocated memory was 393.7 MB in the beginning and 589.8 MB in the end (delta: 196.1 MB). Free memory was 322.0 MB in the beginning and 460.5 MB in the end (delta: -138.5 MB). Peak memory consumption was 57.6 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Unknown lemma type! de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Unknown lemma type!: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:299) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test3_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_04-18-08-553.csv Received shutdown request...