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/heap-manipulation/dancing_true-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ccafca9-m [2018-02-04 04:18:40,096 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 04:18:40,097 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 04:18:40,107 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 04:18:40,108 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 04:18:40,108 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 04:18:40,109 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 04:18:40,111 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 04:18:40,112 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 04:18:40,113 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 04:18:40,114 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 04:18:40,114 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 04:18:40,115 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 04:18:40,116 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 04:18:40,116 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 04:18:40,118 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 04:18:40,119 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 04:18:40,121 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 04:18:40,122 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 04:18:40,123 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 04:18:40,124 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 04:18:40,128 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 04:18:40,129 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 04:18:40,129 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 04:18:40,138 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 04:18:40,138 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 04:18:40,139 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 04:18:40,140 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 04:18:40,140 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 04:18:40,140 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 04:18:40,140 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 04:18:40,140 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 04:18:40,140 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 04:18:40,141 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 04:18:40,141 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 04:18:40,141 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 04:18:40,141 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 04:18:40,141 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-04 04:18:40,141 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 04:18:40,142 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 04:18:40,142 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 04:18:40,142 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 04:18:40,142 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 04:18:40,142 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 04:18:40,142 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 04:18:40,142 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 04:18:40,143 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-04 04:18:40,143 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-04 04:18:40,143 INFO L133 SettingsManager]: * Trace refinement strategy=SMTINTERPOL [2018-02-04 04:18:40,169 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 04:18:40,180 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 04:18:40,183 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 04:18:40,185 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 04:18:40,185 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 04:18:40,185 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dancing_true-unreach-call_false-valid-memtrack.i [2018-02-04 04:18:40,310 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 04:18:40,311 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 04:18:40,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 04:18:40,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 04:18:40,318 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 04:18:40,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:18:40" (1/1) ... [2018-02-04 04:18:40,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7783ef04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:40, skipping insertion in model container [2018-02-04 04:18:40,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:18:40" (1/1) ... [2018-02-04 04:18:40,337 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:18:40,367 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:18:40,463 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:18:40,477 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:18:40,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:40 WrapperNode [2018-02-04 04:18:40,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 04:18:40,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 04:18:40,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 04:18:40,485 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 04:18:40,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:40" (1/1) ... [2018-02-04 04:18:40,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:40" (1/1) ... [2018-02-04 04:18:40,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:40" (1/1) ... [2018-02-04 04:18:40,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:40" (1/1) ... [2018-02-04 04:18:40,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:40" (1/1) ... [2018-02-04 04:18:40,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:40" (1/1) ... [2018-02-04 04:18:40,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:40" (1/1) ... [2018-02-04 04:18:40,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 04:18:40,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 04:18:40,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 04:18:40,516 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 04:18:40,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:40" (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 04:18:40,556 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 04:18:40,556 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 04:18:40,557 INFO L136 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-02-04 04:18:40,557 INFO L136 BoogieDeclarations]: Found implementation of procedure remove [2018-02-04 04:18:40,557 INFO L136 BoogieDeclarations]: Found implementation of procedure re_insert [2018-02-04 04:18:40,557 INFO L136 BoogieDeclarations]: Found implementation of procedure is_list_containing_x [2018-02-04 04:18:40,557 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 04:18:40,557 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-04 04:18:40,557 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-04 04:18:40,557 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 04:18:40,557 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 04:18:40,557 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 04:18:40,557 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-02-04 04:18:40,557 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2018-02-04 04:18:40,558 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-02-04 04:18:40,558 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-02-04 04:18:40,558 INFO L128 BoogieDeclarations]: Found specification of procedure remove [2018-02-04 04:18:40,558 INFO L128 BoogieDeclarations]: Found specification of procedure re_insert [2018-02-04 04:18:40,558 INFO L128 BoogieDeclarations]: Found specification of procedure is_list_containing_x [2018-02-04 04:18:40,558 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 04:18:40,558 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 04:18:40,558 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 04:18:40,824 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 04:18:40,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:18:40 BoogieIcfgContainer [2018-02-04 04:18:40,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 04:18:40,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 04:18:40,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 04:18:40,828 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 04:18:40,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 04:18:40" (1/3) ... [2018-02-04 04:18:40,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b740347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:18:40, skipping insertion in model container [2018-02-04 04:18:40,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:18:40" (2/3) ... [2018-02-04 04:18:40,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b740347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:18:40, skipping insertion in model container [2018-02-04 04:18:40,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:18:40" (3/3) ... [2018-02-04 04:18:40,831 INFO L107 eAbstractionObserver]: Analyzing ICFG dancing_true-unreach-call_false-valid-memtrack.i [2018-02-04 04:18:40,839 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-04 04:18:40,847 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 43 error locations. [2018-02-04 04:18:40,874 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 04:18:40,874 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 04:18:40,874 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-04 04:18:40,874 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-04 04:18:40,874 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 04:18:40,874 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 04:18:40,874 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 04:18:40,874 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 04:18:40,875 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 04:18:40,885 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states. [2018-02-04 04:18:40,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-02-04 04:18:40,894 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:40,894 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:18:40,895 INFO L371 AbstractCegarLoop]: === Iteration 1 === [re_insertErr7RequiresViolation, re_insertErr5RequiresViolation, re_insertErr2RequiresViolation, re_insertErr3RequiresViolation, re_insertErr9RequiresViolation, re_insertErr6RequiresViolation, re_insertErr8RequiresViolation, re_insertErr4RequiresViolation, re_insertErr11RequiresViolation, re_insertErr0RequiresViolation, re_insertErr1RequiresViolation, re_insertErr10RequiresViolation, mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr9RequiresViolation, mainErr8RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr10EnsuresViolation, is_list_containing_xErr1RequiresViolation, is_list_containing_xErr0RequiresViolation, is_list_containing_xErr2RequiresViolation, is_list_containing_xErr3RequiresViolation, removeErr9RequiresViolation, removeErr13RequiresViolation, removeErr0RequiresViolation, removeErr4RequiresViolation, removeErr5RequiresViolation, removeErr12RequiresViolation, removeErr10RequiresViolation, removeErr6RequiresViolation, removeErr14RequiresViolation, removeErr3RequiresViolation, removeErr1RequiresViolation, removeErr8RequiresViolation, removeErr11RequiresViolation, removeErr7RequiresViolation, removeErr15RequiresViolation, removeErr2RequiresViolation]=== [2018-02-04 04:18:40,898 INFO L82 PathProgramCache]: Analyzing trace with hash 436525791, now seen corresponding path program 1 times [2018-02-04 04:18:40,899 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:40,900 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:40,931 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:40,931 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:40,931 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:40,967 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:41,011 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 04:18:41,012 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:18:41,013 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-04 04:18:41,014 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-04 04:18:41,021 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-04 04:18:41,022 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 04:18:41,023 INFO L87 Difference]: Start difference. First operand 122 states. Second operand 3 states. [2018-02-04 04:18:41,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:18:41,212 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2018-02-04 04:18:41,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-04 04:18:41,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-02-04 04:18:41,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:18:41,221 INFO L225 Difference]: With dead ends: 120 [2018-02-04 04:18:41,221 INFO L226 Difference]: Without dead ends: 116 [2018-02-04 04:18:41,222 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 04:18:41,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-02-04 04:18:41,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-02-04 04:18:41,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-02-04 04:18:41,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 129 transitions. [2018-02-04 04:18:41,255 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 129 transitions. Word has length 7 [2018-02-04 04:18:41,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:18:41,255 INFO L432 AbstractCegarLoop]: Abstraction has 116 states and 129 transitions. [2018-02-04 04:18:41,255 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-04 04:18:41,255 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 129 transitions. [2018-02-04 04:18:41,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-02-04 04:18:41,255 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:41,256 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:18:41,256 INFO L371 AbstractCegarLoop]: === Iteration 2 === [re_insertErr7RequiresViolation, re_insertErr5RequiresViolation, re_insertErr2RequiresViolation, re_insertErr3RequiresViolation, re_insertErr9RequiresViolation, re_insertErr6RequiresViolation, re_insertErr8RequiresViolation, re_insertErr4RequiresViolation, re_insertErr11RequiresViolation, re_insertErr0RequiresViolation, re_insertErr1RequiresViolation, re_insertErr10RequiresViolation, mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr9RequiresViolation, mainErr8RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr10EnsuresViolation, is_list_containing_xErr1RequiresViolation, is_list_containing_xErr0RequiresViolation, is_list_containing_xErr2RequiresViolation, is_list_containing_xErr3RequiresViolation, removeErr9RequiresViolation, removeErr13RequiresViolation, removeErr0RequiresViolation, removeErr4RequiresViolation, removeErr5RequiresViolation, removeErr12RequiresViolation, removeErr10RequiresViolation, removeErr6RequiresViolation, removeErr14RequiresViolation, removeErr3RequiresViolation, removeErr1RequiresViolation, removeErr8RequiresViolation, removeErr11RequiresViolation, removeErr7RequiresViolation, removeErr15RequiresViolation, removeErr2RequiresViolation]=== [2018-02-04 04:18:41,256 INFO L82 PathProgramCache]: Analyzing trace with hash 436525792, now seen corresponding path program 1 times [2018-02-04 04:18:41,256 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:41,256 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:41,257 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:41,257 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:41,257 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:41,269 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:41,303 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 04:18:41,304 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:18:41,304 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-04 04:18:41,305 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-04 04:18:41,305 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-04 04:18:41,305 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 04:18:41,306 INFO L87 Difference]: Start difference. First operand 116 states and 129 transitions. Second operand 3 states. [2018-02-04 04:18:41,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:18:41,402 INFO L93 Difference]: Finished difference Result 114 states and 127 transitions. [2018-02-04 04:18:41,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-04 04:18:41,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-02-04 04:18:41,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:18:41,404 INFO L225 Difference]: With dead ends: 114 [2018-02-04 04:18:41,405 INFO L226 Difference]: Without dead ends: 114 [2018-02-04 04:18:41,405 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 04:18:41,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-02-04 04:18:41,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-02-04 04:18:41,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-02-04 04:18:41,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 127 transitions. [2018-02-04 04:18:41,414 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 127 transitions. Word has length 7 [2018-02-04 04:18:41,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:18:41,414 INFO L432 AbstractCegarLoop]: Abstraction has 114 states and 127 transitions. [2018-02-04 04:18:41,415 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-04 04:18:41,415 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 127 transitions. [2018-02-04 04:18:41,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-04 04:18:41,415 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:41,415 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:18:41,416 INFO L371 AbstractCegarLoop]: === Iteration 3 === [re_insertErr7RequiresViolation, re_insertErr5RequiresViolation, re_insertErr2RequiresViolation, re_insertErr3RequiresViolation, re_insertErr9RequiresViolation, re_insertErr6RequiresViolation, re_insertErr8RequiresViolation, re_insertErr4RequiresViolation, re_insertErr11RequiresViolation, re_insertErr0RequiresViolation, re_insertErr1RequiresViolation, re_insertErr10RequiresViolation, mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr9RequiresViolation, mainErr8RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr10EnsuresViolation, is_list_containing_xErr1RequiresViolation, is_list_containing_xErr0RequiresViolation, is_list_containing_xErr2RequiresViolation, is_list_containing_xErr3RequiresViolation, removeErr9RequiresViolation, removeErr13RequiresViolation, removeErr0RequiresViolation, removeErr4RequiresViolation, removeErr5RequiresViolation, removeErr12RequiresViolation, removeErr10RequiresViolation, removeErr6RequiresViolation, removeErr14RequiresViolation, removeErr3RequiresViolation, removeErr1RequiresViolation, removeErr8RequiresViolation, removeErr11RequiresViolation, removeErr7RequiresViolation, removeErr15RequiresViolation, removeErr2RequiresViolation]=== [2018-02-04 04:18:41,416 INFO L82 PathProgramCache]: Analyzing trace with hash -711243012, now seen corresponding path program 1 times [2018-02-04 04:18:41,416 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:41,416 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:41,417 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:41,417 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:41,417 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:41,434 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:41,476 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 04:18:41,476 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:18:41,476 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 04:18:41,476 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 04:18:41,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 04:18:41,476 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 04:18:41,477 INFO L87 Difference]: Start difference. First operand 114 states and 127 transitions. Second operand 5 states. [2018-02-04 04:18:41,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:18:41,545 INFO L93 Difference]: Finished difference Result 150 states and 176 transitions. [2018-02-04 04:18:41,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 04:18:41,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-02-04 04:18:41,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:18:41,549 INFO L225 Difference]: With dead ends: 150 [2018-02-04 04:18:41,549 INFO L226 Difference]: Without dead ends: 150 [2018-02-04 04:18:41,549 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 04:18:41,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-02-04 04:18:41,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 138. [2018-02-04 04:18:41,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-02-04 04:18:41,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 166 transitions. [2018-02-04 04:18:41,561 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 166 transitions. Word has length 15 [2018-02-04 04:18:41,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:18:41,561 INFO L432 AbstractCegarLoop]: Abstraction has 138 states and 166 transitions. [2018-02-04 04:18:41,561 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 04:18:41,561 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 166 transitions. [2018-02-04 04:18:41,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-04 04:18:41,562 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:41,562 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:18:41,562 INFO L371 AbstractCegarLoop]: === Iteration 4 === [re_insertErr7RequiresViolation, re_insertErr5RequiresViolation, re_insertErr2RequiresViolation, re_insertErr3RequiresViolation, re_insertErr9RequiresViolation, re_insertErr6RequiresViolation, re_insertErr8RequiresViolation, re_insertErr4RequiresViolation, re_insertErr11RequiresViolation, re_insertErr0RequiresViolation, re_insertErr1RequiresViolation, re_insertErr10RequiresViolation, mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr9RequiresViolation, mainErr8RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr10EnsuresViolation, is_list_containing_xErr1RequiresViolation, is_list_containing_xErr0RequiresViolation, is_list_containing_xErr2RequiresViolation, is_list_containing_xErr3RequiresViolation, removeErr9RequiresViolation, removeErr13RequiresViolation, removeErr0RequiresViolation, removeErr4RequiresViolation, removeErr5RequiresViolation, removeErr12RequiresViolation, removeErr10RequiresViolation, removeErr6RequiresViolation, removeErr14RequiresViolation, removeErr3RequiresViolation, removeErr1RequiresViolation, removeErr8RequiresViolation, removeErr11RequiresViolation, removeErr7RequiresViolation, removeErr15RequiresViolation, removeErr2RequiresViolation]=== [2018-02-04 04:18:41,562 INFO L82 PathProgramCache]: Analyzing trace with hash -714029430, now seen corresponding path program 1 times [2018-02-04 04:18:41,562 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:41,562 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:41,563 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:41,563 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:41,564 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:41,576 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:41,603 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 04:18:41,604 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:18:41,604 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-04 04:18:41,604 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-04 04:18:41,605 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-04 04:18:41,605 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-04 04:18:41,605 INFO L87 Difference]: Start difference. First operand 138 states and 166 transitions. Second operand 4 states. [2018-02-04 04:18:41,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:18:41,740 INFO L93 Difference]: Finished difference Result 154 states and 189 transitions. [2018-02-04 04:18:41,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-04 04:18:41,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-02-04 04:18:41,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:18:41,742 INFO L225 Difference]: With dead ends: 154 [2018-02-04 04:18:41,742 INFO L226 Difference]: Without dead ends: 154 [2018-02-04 04:18:41,743 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-04 04:18:41,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-02-04 04:18:41,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 136. [2018-02-04 04:18:41,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-02-04 04:18:41,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 162 transitions. [2018-02-04 04:18:41,751 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 162 transitions. Word has length 15 [2018-02-04 04:18:41,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:18:41,751 INFO L432 AbstractCegarLoop]: Abstraction has 136 states and 162 transitions. [2018-02-04 04:18:41,751 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-04 04:18:41,751 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 162 transitions. [2018-02-04 04:18:41,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-04 04:18:41,752 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:41,752 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:18:41,752 INFO L371 AbstractCegarLoop]: === Iteration 5 === [re_insertErr7RequiresViolation, re_insertErr5RequiresViolation, re_insertErr2RequiresViolation, re_insertErr3RequiresViolation, re_insertErr9RequiresViolation, re_insertErr6RequiresViolation, re_insertErr8RequiresViolation, re_insertErr4RequiresViolation, re_insertErr11RequiresViolation, re_insertErr0RequiresViolation, re_insertErr1RequiresViolation, re_insertErr10RequiresViolation, mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr9RequiresViolation, mainErr8RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr10EnsuresViolation, is_list_containing_xErr1RequiresViolation, is_list_containing_xErr0RequiresViolation, is_list_containing_xErr2RequiresViolation, is_list_containing_xErr3RequiresViolation, removeErr9RequiresViolation, removeErr13RequiresViolation, removeErr0RequiresViolation, removeErr4RequiresViolation, removeErr5RequiresViolation, removeErr12RequiresViolation, removeErr10RequiresViolation, removeErr6RequiresViolation, removeErr14RequiresViolation, removeErr3RequiresViolation, removeErr1RequiresViolation, removeErr8RequiresViolation, removeErr11RequiresViolation, removeErr7RequiresViolation, removeErr15RequiresViolation, removeErr2RequiresViolation]=== [2018-02-04 04:18:41,752 INFO L82 PathProgramCache]: Analyzing trace with hash -714029429, now seen corresponding path program 1 times [2018-02-04 04:18:41,752 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:41,753 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:41,753 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:41,754 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:41,754 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:41,769 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:41,818 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 04:18:41,818 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:18:41,818 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-04 04:18:41,819 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-04 04:18:41,819 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-04 04:18:41,819 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-04 04:18:41,819 INFO L87 Difference]: Start difference. First operand 136 states and 162 transitions. Second operand 4 states. [2018-02-04 04:18:41,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:18:41,915 INFO L93 Difference]: Finished difference Result 155 states and 187 transitions. [2018-02-04 04:18:41,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-04 04:18:41,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-02-04 04:18:41,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:18:41,916 INFO L225 Difference]: With dead ends: 155 [2018-02-04 04:18:41,916 INFO L226 Difference]: Without dead ends: 155 [2018-02-04 04:18:41,916 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-04 04:18:41,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-02-04 04:18:41,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 134. [2018-02-04 04:18:41,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-02-04 04:18:41,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2018-02-04 04:18:41,926 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 15 [2018-02-04 04:18:41,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:18:41,926 INFO L432 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2018-02-04 04:18:41,927 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-04 04:18:41,927 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2018-02-04 04:18:41,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-04 04:18:41,927 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:18:41,927 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:18:41,928 INFO L371 AbstractCegarLoop]: === Iteration 6 === [re_insertErr7RequiresViolation, re_insertErr5RequiresViolation, re_insertErr2RequiresViolation, re_insertErr3RequiresViolation, re_insertErr9RequiresViolation, re_insertErr6RequiresViolation, re_insertErr8RequiresViolation, re_insertErr4RequiresViolation, re_insertErr11RequiresViolation, re_insertErr0RequiresViolation, re_insertErr1RequiresViolation, re_insertErr10RequiresViolation, mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr9RequiresViolation, mainErr8RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr10EnsuresViolation, is_list_containing_xErr1RequiresViolation, is_list_containing_xErr0RequiresViolation, is_list_containing_xErr2RequiresViolation, is_list_containing_xErr3RequiresViolation, removeErr9RequiresViolation, removeErr13RequiresViolation, removeErr0RequiresViolation, removeErr4RequiresViolation, removeErr5RequiresViolation, removeErr12RequiresViolation, removeErr10RequiresViolation, removeErr6RequiresViolation, removeErr14RequiresViolation, removeErr3RequiresViolation, removeErr1RequiresViolation, removeErr8RequiresViolation, removeErr11RequiresViolation, removeErr7RequiresViolation, removeErr15RequiresViolation, removeErr2RequiresViolation]=== [2018-02-04 04:18:41,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1012485069, now seen corresponding path program 1 times [2018-02-04 04:18:41,928 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:18:41,928 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:18:41,929 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:41,929 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:18:41,929 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:18:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:18:41,948 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:18:41,955 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 04:18:41,958 INFO L168 Benchmark]: Toolchain (without parser) took 1647.09 ms. Allocated memory was 403.7 MB in the beginning and 615.0 MB in the end (delta: 211.3 MB). Free memory was 360.6 MB in the beginning and 470.3 MB in the end (delta: -109.8 MB). Peak memory consumption was 101.5 MB. Max. memory is 5.3 GB. [2018-02-04 04:18:41,959 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 403.7 MB. Free memory is still 367.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 04:18:41,959 INFO L168 Benchmark]: CACSL2BoogieTranslator took 172.13 ms. Allocated memory is still 403.7 MB. Free memory was 360.6 MB in the beginning and 350.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-02-04 04:18:41,959 INFO L168 Benchmark]: Boogie Preprocessor took 31.40 ms. Allocated memory is still 403.7 MB. Free memory was 350.0 MB in the beginning and 347.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 5.3 GB. [2018-02-04 04:18:41,960 INFO L168 Benchmark]: RCFGBuilder took 308.86 ms. Allocated memory is still 403.7 MB. Free memory was 347.3 MB in the beginning and 314.4 MB in the end (delta: 32.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 5.3 GB. [2018-02-04 04:18:41,960 INFO L168 Benchmark]: TraceAbstraction took 1131.96 ms. Allocated memory was 403.7 MB in the beginning and 615.0 MB in the end (delta: 211.3 MB). Free memory was 314.4 MB in the beginning and 470.3 MB in the end (delta: -155.9 MB). Peak memory consumption was 55.3 MB. Max. memory is 5.3 GB. [2018-02-04 04:18:41,961 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 403.7 MB. Free memory is still 367.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 172.13 ms. Allocated memory is still 403.7 MB. Free memory was 360.6 MB in the beginning and 350.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 31.40 ms. Allocated memory is still 403.7 MB. Free memory was 350.0 MB in the beginning and 347.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 5.3 GB. * RCFGBuilder took 308.86 ms. Allocated memory is still 403.7 MB. Free memory was 347.3 MB in the beginning and 314.4 MB in the end (delta: 32.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1131.96 ms. Allocated memory was 403.7 MB in the beginning and 615.0 MB in the end (delta: 211.3 MB). Free memory was 314.4 MB in the beginning and 470.3 MB in the end (delta: -155.9 MB). Peak memory consumption was 55.3 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/dancing_true-unreach-call_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_04-18-41-969.csv Received shutdown request...