java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf -i ../../../trunk/examples/svcomp/memsafety/lockfree-3.2_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-26d9e06-m [2018-02-02 09:55:50,675 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 09:55:50,676 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 09:55:50,689 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 09:55:50,689 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 09:55:50,690 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 09:55:50,690 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 09:55:50,692 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 09:55:50,693 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 09:55:50,694 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 09:55:50,695 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 09:55:50,695 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 09:55:50,696 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 09:55:50,697 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 09:55:50,698 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 09:55:50,699 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 09:55:50,701 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 09:55:50,703 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 09:55:50,703 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 09:55:50,705 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 09:55:50,706 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 09:55:50,710 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 09:55:50,711 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 09:55:50,711 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf [2018-02-02 09:55:50,720 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 09:55:50,720 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 09:55:50,721 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 09:55:50,722 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 09:55:50,722 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 09:55:50,722 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 09:55:50,722 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 09:55:50,722 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 09:55:50,722 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 09:55:50,722 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 09:55:50,722 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 09:55:50,722 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 09:55:50,723 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 09:55:50,723 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 09:55:50,723 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 09:55:50,723 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 09:55:50,723 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 09:55:50,723 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 09:55:50,723 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 09:55:50,723 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 09:55:50,723 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 09:55:50,723 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 09:55:50,724 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-02-02 09:55:50,750 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 09:55:50,758 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 09:55:50,760 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 09:55:50,761 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 09:55:50,762 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 09:55:50,762 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/lockfree-3.2_false-valid-memtrack.i [2018-02-02 09:55:50,907 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 09:55:50,909 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 09:55:50,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 09:55:50,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 09:55:50,915 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 09:55:50,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:55:50" (1/1) ... [2018-02-02 09:55:50,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59897e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:55:50, skipping insertion in model container [2018-02-02 09:55:50,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:55:50" (1/1) ... [2018-02-02 09:55:50,931 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 09:55:50,964 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 09:55:51,063 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 09:55:51,077 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 09:55:51,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:55:51 WrapperNode [2018-02-02 09:55:51,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 09:55:51,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 09:55:51,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 09:55:51,085 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 09:55:51,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:55:51" (1/1) ... [2018-02-02 09:55:51,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:55:51" (1/1) ... [2018-02-02 09:55:51,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:55:51" (1/1) ... [2018-02-02 09:55:51,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:55:51" (1/1) ... [2018-02-02 09:55:51,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:55:51" (1/1) ... [2018-02-02 09:55:51,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:55:51" (1/1) ... [2018-02-02 09:55:51,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:55:51" (1/1) ... [2018-02-02 09:55:51,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 09:55:51,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 09:55:51,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 09:55:51,114 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 09:55:51,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:55:51" (1/1) ... No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 09:55:51,152 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 09:55:51,152 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 09:55:51,152 INFO L136 BoogieDeclarations]: Found implementation of procedure push [2018-02-02 09:55:51,152 INFO L136 BoogieDeclarations]: Found implementation of procedure pop [2018-02-02 09:55:51,152 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 09:55:51,152 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 09:55:51,152 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 09:55:51,152 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-02 09:55:51,153 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-02 09:55:51,153 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 09:55:51,153 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 09:55:51,153 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 09:55:51,153 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-02 09:55:51,153 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-02 09:55:51,153 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 09:55:51,153 INFO L128 BoogieDeclarations]: Found specification of procedure push [2018-02-02 09:55:51,153 INFO L128 BoogieDeclarations]: Found specification of procedure pop [2018-02-02 09:55:51,153 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 09:55:51,153 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 09:55:51,153 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 09:55:51,415 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 09:55:51,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:55:51 BoogieIcfgContainer [2018-02-02 09:55:51,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 09:55:51,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 09:55:51,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 09:55:51,419 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 09:55:51,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:55:50" (1/3) ... [2018-02-02 09:55:51,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18cac531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:55:51, skipping insertion in model container [2018-02-02 09:55:51,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:55:51" (2/3) ... [2018-02-02 09:55:51,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18cac531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:55:51, skipping insertion in model container [2018-02-02 09:55:51,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:55:51" (3/3) ... [2018-02-02 09:55:51,421 INFO L107 eAbstractionObserver]: Analyzing ICFG lockfree-3.2_false-valid-memtrack.i [2018-02-02 09:55:51,427 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-02 09:55:51,433 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2018-02-02 09:55:51,456 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 09:55:51,457 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 09:55:51,457 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-02-02 09:55:51,457 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-02 09:55:51,457 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 09:55:51,457 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 09:55:51,458 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 09:55:51,458 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 09:55:51,458 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 09:55:51,468 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2018-02-02 09:55:51,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-02-02 09:55:51,476 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:55:51,476 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:55:51,477 INFO L371 AbstractCegarLoop]: === Iteration 1 === [popErr2RequiresViolation, popErr5RequiresViolation, popErr4RequiresViolation, popErr3RequiresViolation, popErr0RequiresViolation, popErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, pushErr5RequiresViolation, pushErr3RequiresViolation, pushErr0RequiresViolation, pushErr1RequiresViolation, pushErr7RequiresViolation, pushErr6RequiresViolation, pushErr2RequiresViolation, pushErr4RequiresViolation]=== [2018-02-02 09:55:51,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1799126466, now seen corresponding path program 1 times [2018-02-02 09:55:51,513 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:55:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:55:51,557 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:55:51,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:51,593 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:55:51,594 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 09:55:51,595 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:55:51,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:51,595 INFO L182 omatonBuilderFactory]: Interpolants [80#false, 79#true] [2018-02-02 09:55:51,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:51,597 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-02-02 09:55:51,607 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-02-02 09:55:51,607 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-02-02 09:55:51,609 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 2 states. [2018-02-02 09:55:51,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:55:51,625 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2018-02-02 09:55:51,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-02-02 09:55:51,681 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-02-02 09:55:51,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:55:51,694 INFO L225 Difference]: With dead ends: 76 [2018-02-02 09:55:51,694 INFO L226 Difference]: Without dead ends: 73 [2018-02-02 09:55:51,696 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-02-02 09:55:51,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-02-02 09:55:51,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-02-02 09:55:51,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-02-02 09:55:51,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 90 transitions. [2018-02-02 09:55:51,732 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 90 transitions. Word has length 9 [2018-02-02 09:55:51,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:55:51,732 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 90 transitions. [2018-02-02 09:55:51,732 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-02-02 09:55:51,732 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 90 transitions. [2018-02-02 09:55:51,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-02-02 09:55:51,732 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:55:51,733 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:55:51,733 INFO L371 AbstractCegarLoop]: === Iteration 2 === [popErr2RequiresViolation, popErr5RequiresViolation, popErr4RequiresViolation, popErr3RequiresViolation, popErr0RequiresViolation, popErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, pushErr5RequiresViolation, pushErr3RequiresViolation, pushErr0RequiresViolation, pushErr1RequiresViolation, pushErr7RequiresViolation, pushErr6RequiresViolation, pushErr2RequiresViolation, pushErr4RequiresViolation]=== [2018-02-02 09:55:51,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1199640283, now seen corresponding path program 1 times [2018-02-02 09:55:51,734 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:55:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:55:51,753 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:55:51,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:51,788 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:55:51,788 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 09:55:51,788 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:55:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:51,789 INFO L182 omatonBuilderFactory]: Interpolants [230#true, 231#false, 232#|main_#t~short13|] [2018-02-02 09:55:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:51,790 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 09:55:51,791 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 09:55:51,791 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 09:55:51,791 INFO L87 Difference]: Start difference. First operand 73 states and 90 transitions. Second operand 3 states. [2018-02-02 09:55:51,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:55:51,819 INFO L93 Difference]: Finished difference Result 74 states and 91 transitions. [2018-02-02 09:55:51,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 09:55:51,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-02-02 09:55:51,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:55:51,821 INFO L225 Difference]: With dead ends: 74 [2018-02-02 09:55:51,821 INFO L226 Difference]: Without dead ends: 74 [2018-02-02 09:55:51,822 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 09:55:51,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-02-02 09:55:51,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-02-02 09:55:51,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-02-02 09:55:51,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2018-02-02 09:55:51,828 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 12 [2018-02-02 09:55:51,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:55:51,829 INFO L432 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2018-02-02 09:55:51,829 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 09:55:51,829 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2018-02-02 09:55:51,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-02-02 09:55:51,829 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:55:51,830 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:55:51,830 INFO L371 AbstractCegarLoop]: === Iteration 3 === [popErr2RequiresViolation, popErr5RequiresViolation, popErr4RequiresViolation, popErr3RequiresViolation, popErr0RequiresViolation, popErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, pushErr5RequiresViolation, pushErr3RequiresViolation, pushErr0RequiresViolation, pushErr1RequiresViolation, pushErr7RequiresViolation, pushErr6RequiresViolation, pushErr2RequiresViolation, pushErr4RequiresViolation]=== [2018-02-02 09:55:51,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1201487325, now seen corresponding path program 1 times [2018-02-02 09:55:51,831 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:55:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:55:51,848 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:55:51,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:51,895 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:55:51,895 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 09:55:51,895 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:55:51,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:51,895 INFO L182 omatonBuilderFactory]: Interpolants [381#true, 382#false, 383#(and (= 0 ~garbage.base) (= 0 ~garbage.offset))] [2018-02-02 09:55:51,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:51,896 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 09:55:51,896 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 09:55:51,896 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 09:55:51,896 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand 3 states. [2018-02-02 09:55:51,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:55:51,939 INFO L93 Difference]: Finished difference Result 132 states and 167 transitions. [2018-02-02 09:55:51,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 09:55:51,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-02-02 09:55:51,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:55:51,940 INFO L225 Difference]: With dead ends: 132 [2018-02-02 09:55:51,940 INFO L226 Difference]: Without dead ends: 132 [2018-02-02 09:55:51,940 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 09:55:51,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-02-02 09:55:51,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 114. [2018-02-02 09:55:51,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-02-02 09:55:51,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 159 transitions. [2018-02-02 09:55:51,951 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 159 transitions. Word has length 12 [2018-02-02 09:55:51,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:55:51,951 INFO L432 AbstractCegarLoop]: Abstraction has 114 states and 159 transitions. [2018-02-02 09:55:51,951 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 09:55:51,951 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 159 transitions. [2018-02-02 09:55:51,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-02 09:55:51,952 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:55:51,952 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:55:51,952 INFO L371 AbstractCegarLoop]: === Iteration 4 === [popErr2RequiresViolation, popErr5RequiresViolation, popErr4RequiresViolation, popErr3RequiresViolation, popErr0RequiresViolation, popErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, pushErr5RequiresViolation, pushErr3RequiresViolation, pushErr0RequiresViolation, pushErr1RequiresViolation, pushErr7RequiresViolation, pushErr6RequiresViolation, pushErr2RequiresViolation, pushErr4RequiresViolation]=== [2018-02-02 09:55:51,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1408600152, now seen corresponding path program 1 times [2018-02-02 09:55:51,953 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:55:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:55:51,966 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:55:51,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:51,988 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:55:51,988 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 09:55:51,989 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:55:51,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:51,989 INFO L182 omatonBuilderFactory]: Interpolants [630#true, 631#false, 632#(= |#valid| |old(#valid)|)] [2018-02-02 09:55:51,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:51,989 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 09:55:51,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 09:55:51,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 09:55:51,990 INFO L87 Difference]: Start difference. First operand 114 states and 159 transitions. Second operand 3 states. [2018-02-02 09:55:52,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:55:52,061 INFO L93 Difference]: Finished difference Result 147 states and 205 transitions. [2018-02-02 09:55:52,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 09:55:52,062 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-02-02 09:55:52,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:55:52,063 INFO L225 Difference]: With dead ends: 147 [2018-02-02 09:55:52,063 INFO L226 Difference]: Without dead ends: 143 [2018-02-02 09:55:52,063 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 [2018-02-02 09:55:52,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-02-02 09:55:52,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 135. [2018-02-02 09:55:52,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-02-02 09:55:52,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 192 transitions. [2018-02-02 09:55:52,071 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 192 transitions. Word has length 13 [2018-02-02 09:55:52,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:55:52,072 INFO L432 AbstractCegarLoop]: Abstraction has 135 states and 192 transitions. [2018-02-02 09:55:52,072 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 09:55:52,072 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 192 transitions. [2018-02-02 09:55:52,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-02 09:55:52,072 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:55:52,073 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:55:52,073 INFO L371 AbstractCegarLoop]: === Iteration 5 === [popErr2RequiresViolation, popErr5RequiresViolation, popErr4RequiresViolation, popErr3RequiresViolation, popErr0RequiresViolation, popErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, pushErr5RequiresViolation, pushErr3RequiresViolation, pushErr0RequiresViolation, pushErr1RequiresViolation, pushErr7RequiresViolation, pushErr6RequiresViolation, pushErr2RequiresViolation, pushErr4RequiresViolation]=== [2018-02-02 09:55:52,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1628464921, now seen corresponding path program 1 times [2018-02-02 09:55:52,073 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:55:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:55:52,085 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:55:52,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:52,132 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:55:52,132 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 09:55:52,132 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:55:52,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:52,132 INFO L182 omatonBuilderFactory]: Interpolants [915#true, 916#false, 917#(<= ~pc1 1), 918#(<= |push_#t~post0| 1), 919#(not |push_#t~switch1|)] [2018-02-02 09:55:52,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:52,133 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 09:55:52,133 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 09:55:52,133 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 09:55:52,133 INFO L87 Difference]: Start difference. First operand 135 states and 192 transitions. Second operand 5 states. [2018-02-02 09:55:52,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:55:52,189 INFO L93 Difference]: Finished difference Result 255 states and 357 transitions. [2018-02-02 09:55:52,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 09:55:52,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-02-02 09:55:52,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:55:52,192 INFO L225 Difference]: With dead ends: 255 [2018-02-02 09:55:52,192 INFO L226 Difference]: Without dead ends: 255 [2018-02-02 09:55:52,192 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-02 09:55:52,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-02-02 09:55:52,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 226. [2018-02-02 09:55:52,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-02-02 09:55:52,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 338 transitions. [2018-02-02 09:55:52,210 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 338 transitions. Word has length 15 [2018-02-02 09:55:52,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:55:52,210 INFO L432 AbstractCegarLoop]: Abstraction has 226 states and 338 transitions. [2018-02-02 09:55:52,210 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 09:55:52,210 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 338 transitions. [2018-02-02 09:55:52,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-02-02 09:55:52,211 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:55:52,211 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:55:52,211 INFO L371 AbstractCegarLoop]: === Iteration 6 === [popErr2RequiresViolation, popErr5RequiresViolation, popErr4RequiresViolation, popErr3RequiresViolation, popErr0RequiresViolation, popErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, pushErr5RequiresViolation, pushErr3RequiresViolation, pushErr0RequiresViolation, pushErr1RequiresViolation, pushErr7RequiresViolation, pushErr6RequiresViolation, pushErr2RequiresViolation, pushErr4RequiresViolation]=== [2018-02-02 09:55:52,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1057474006, now seen corresponding path program 1 times [2018-02-02 09:55:52,212 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:55:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:55:52,221 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:55:52,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:52,241 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:55:52,241 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 09:55:52,241 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:55:52,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:52,241 INFO L182 omatonBuilderFactory]: Interpolants [1403#true, 1404#false, 1405#(= 1 (select |#valid| |push_#t~malloc2.base|)), 1406#(= 1 (select |#valid| ~x1.base))] [2018-02-02 09:55:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:52,242 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 09:55:52,242 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 09:55:52,242 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 09:55:52,242 INFO L87 Difference]: Start difference. First operand 226 states and 338 transitions. Second operand 4 states. [2018-02-02 09:55:52,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:55:52,323 INFO L93 Difference]: Finished difference Result 386 states and 569 transitions. [2018-02-02 09:55:52,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 09:55:52,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-02-02 09:55:52,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:55:52,326 INFO L225 Difference]: With dead ends: 386 [2018-02-02 09:55:52,326 INFO L226 Difference]: Without dead ends: 386 [2018-02-02 09:55:52,326 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 09:55:52,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2018-02-02 09:55:52,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 358. [2018-02-02 09:55:52,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2018-02-02 09:55:52,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 548 transitions. [2018-02-02 09:55:52,346 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 548 transitions. Word has length 16 [2018-02-02 09:55:52,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:55:52,346 INFO L432 AbstractCegarLoop]: Abstraction has 358 states and 548 transitions. [2018-02-02 09:55:52,346 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 09:55:52,347 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 548 transitions. [2018-02-02 09:55:52,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-02-02 09:55:52,347 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:55:52,347 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:55:52,347 INFO L371 AbstractCegarLoop]: === Iteration 7 === [popErr2RequiresViolation, popErr5RequiresViolation, popErr4RequiresViolation, popErr3RequiresViolation, popErr0RequiresViolation, popErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, pushErr5RequiresViolation, pushErr3RequiresViolation, pushErr0RequiresViolation, pushErr1RequiresViolation, pushErr7RequiresViolation, pushErr6RequiresViolation, pushErr2RequiresViolation, pushErr4RequiresViolation]=== [2018-02-02 09:55:52,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1057474005, now seen corresponding path program 1 times [2018-02-02 09:55:52,348 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:55:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:55:52,357 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:55:52,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:52,396 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:55:52,397 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 09:55:52,397 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:55:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:52,397 INFO L182 omatonBuilderFactory]: Interpolants [2153#true, 2154#false, 2155#(and (= 8 (select |#length| |push_#t~malloc2.base|)) (= 0 |push_#t~malloc2.offset|)), 2156#(and (= (select |#length| ~x1.base) 8) (= ~x1.offset 0))] [2018-02-02 09:55:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:52,398 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 09:55:52,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 09:55:52,398 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 09:55:52,398 INFO L87 Difference]: Start difference. First operand 358 states and 548 transitions. Second operand 4 states. [2018-02-02 09:55:52,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:55:52,497 INFO L93 Difference]: Finished difference Result 485 states and 716 transitions. [2018-02-02 09:55:52,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 09:55:52,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-02-02 09:55:52,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:55:52,500 INFO L225 Difference]: With dead ends: 485 [2018-02-02 09:55:52,501 INFO L226 Difference]: Without dead ends: 485 [2018-02-02 09:55:52,501 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 09:55:52,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2018-02-02 09:55:52,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 460. [2018-02-02 09:55:52,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2018-02-02 09:55:52,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 696 transitions. [2018-02-02 09:55:52,520 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 696 transitions. Word has length 16 [2018-02-02 09:55:52,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:55:52,520 INFO L432 AbstractCegarLoop]: Abstraction has 460 states and 696 transitions. [2018-02-02 09:55:52,520 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 09:55:52,520 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 696 transitions. [2018-02-02 09:55:52,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-02-02 09:55:52,521 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:55:52,521 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:55:52,521 INFO L371 AbstractCegarLoop]: === Iteration 8 === [popErr2RequiresViolation, popErr5RequiresViolation, popErr4RequiresViolation, popErr3RequiresViolation, popErr0RequiresViolation, popErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, pushErr5RequiresViolation, pushErr3RequiresViolation, pushErr0RequiresViolation, pushErr1RequiresViolation, pushErr7RequiresViolation, pushErr6RequiresViolation, pushErr2RequiresViolation, pushErr4RequiresViolation]=== [2018-02-02 09:55:52,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1708141764, now seen corresponding path program 1 times [2018-02-02 09:55:52,522 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:55:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:55:52,534 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:55:52,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:52,568 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:55:52,568 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 09:55:52,568 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:55:52,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:52,569 INFO L182 omatonBuilderFactory]: Interpolants [3104#true, 3105#false, 3106#(<= ~pc4 1), 3107#(<= |pop_#t~post7| 1), 3108#(not |pop_#t~switch8|)] [2018-02-02 09:55:52,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:52,569 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 09:55:52,569 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 09:55:52,570 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 09:55:52,570 INFO L87 Difference]: Start difference. First operand 460 states and 696 transitions. Second operand 5 states. [2018-02-02 09:55:52,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:55:52,630 INFO L93 Difference]: Finished difference Result 861 states and 1225 transitions. [2018-02-02 09:55:52,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 09:55:52,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-02-02 09:55:52,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:55:52,636 INFO L225 Difference]: With dead ends: 861 [2018-02-02 09:55:52,636 INFO L226 Difference]: Without dead ends: 861 [2018-02-02 09:55:52,637 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-02 09:55:52,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2018-02-02 09:55:52,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 828. [2018-02-02 09:55:52,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 828 states. [2018-02-02 09:55:52,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1196 transitions. [2018-02-02 09:55:52,662 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1196 transitions. Word has length 16 [2018-02-02 09:55:52,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:55:52,664 INFO L432 AbstractCegarLoop]: Abstraction has 828 states and 1196 transitions. [2018-02-02 09:55:52,664 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 09:55:52,664 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1196 transitions. [2018-02-02 09:55:52,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-02-02 09:55:52,665 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:55:52,665 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:55:52,665 INFO L371 AbstractCegarLoop]: === Iteration 9 === [popErr2RequiresViolation, popErr5RequiresViolation, popErr4RequiresViolation, popErr3RequiresViolation, popErr0RequiresViolation, popErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, pushErr5RequiresViolation, pushErr3RequiresViolation, pushErr0RequiresViolation, pushErr1RequiresViolation, pushErr7RequiresViolation, pushErr6RequiresViolation, pushErr2RequiresViolation, pushErr4RequiresViolation]=== [2018-02-02 09:55:52,665 INFO L82 PathProgramCache]: Analyzing trace with hash 750766986, now seen corresponding path program 1 times [2018-02-02 09:55:52,666 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:55:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:55:52,680 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:55:52,724 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:52,725 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-02 09:55:52,725 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-02-02 09:55:52,725 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:55:52,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:52,725 INFO L182 omatonBuilderFactory]: Interpolants [4800#true, 4801#false, 4802#(or (not |pop_#t~switch8|) (<= ~pc4 2)), 4803#(<= ~pc4 2), 4804#(<= |pop_#t~post7| 2), 4805#(not |pop_#t~switch8|)] [2018-02-02 09:55:52,726 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:52,726 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 09:55:52,726 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 09:55:52,726 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-02 09:55:52,726 INFO L87 Difference]: Start difference. First operand 828 states and 1196 transitions. Second operand 6 states. [2018-02-02 09:55:52,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:55:52,785 INFO L93 Difference]: Finished difference Result 1289 states and 1809 transitions. [2018-02-02 09:55:52,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 09:55:52,786 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-02-02 09:55:52,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:55:52,790 INFO L225 Difference]: With dead ends: 1289 [2018-02-02 09:55:52,790 INFO L226 Difference]: Without dead ends: 1289 [2018-02-02 09:55:52,790 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-02-02 09:55:52,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2018-02-02 09:55:52,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1220. [2018-02-02 09:55:52,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1220 states. [2018-02-02 09:55:52,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1744 transitions. [2018-02-02 09:55:52,826 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1744 transitions. Word has length 26 [2018-02-02 09:55:52,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:55:52,826 INFO L432 AbstractCegarLoop]: Abstraction has 1220 states and 1744 transitions. [2018-02-02 09:55:52,826 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 09:55:52,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1744 transitions. [2018-02-02 09:55:52,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-02-02 09:55:52,827 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:55:52,828 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:55:52,828 INFO L371 AbstractCegarLoop]: === Iteration 10 === [popErr2RequiresViolation, popErr5RequiresViolation, popErr4RequiresViolation, popErr3RequiresViolation, popErr0RequiresViolation, popErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, pushErr5RequiresViolation, pushErr3RequiresViolation, pushErr0RequiresViolation, pushErr1RequiresViolation, pushErr7RequiresViolation, pushErr6RequiresViolation, pushErr2RequiresViolation, pushErr4RequiresViolation]=== [2018-02-02 09:55:52,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1952857995, now seen corresponding path program 1 times [2018-02-02 09:55:52,829 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:55:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:55:52,843 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:55:52,904 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:52,904 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-02 09:55:52,904 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-02-02 09:55:52,905 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:55:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:52,905 INFO L182 omatonBuilderFactory]: Interpolants [7321#true, 7322#false, 7323#(= 0 ~S.base), 7324#(or (not (= ~S.offset 0)) (not (= 1 ~pc4)) (not |main_#t~short13|)), 7325#(or (not (= ~S.offset 0)) (not (= 1 ~pc4))), 7326#(= ~S.offset |old(~S.offset)|), 7327#|main_#t~short13|] [2018-02-02 09:55:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:55:52,905 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 09:55:52,906 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 09:55:52,906 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-02-02 09:55:52,906 INFO L87 Difference]: Start difference. First operand 1220 states and 1744 transitions. Second operand 7 states. [2018-02-02 09:55:53,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:55:53,034 INFO L93 Difference]: Finished difference Result 3241 states and 4724 transitions. [2018-02-02 09:55:53,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 09:55:53,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-02-02 09:55:53,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:55:53,049 INFO L225 Difference]: With dead ends: 3241 [2018-02-02 09:55:53,049 INFO L226 Difference]: Without dead ends: 3241 [2018-02-02 09:55:53,050 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-02-02 09:55:53,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3241 states. [2018-02-02 09:55:53,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3241 to 3128. [2018-02-02 09:55:53,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3128 states. [2018-02-02 09:55:53,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 4498 transitions. [2018-02-02 09:55:53,132 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 4498 transitions. Word has length 27 [2018-02-02 09:55:53,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:55:53,132 INFO L432 AbstractCegarLoop]: Abstraction has 3128 states and 4498 transitions. [2018-02-02 09:55:53,132 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 09:55:53,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 4498 transitions. [2018-02-02 09:55:53,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-02-02 09:55:53,133 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:55:53,134 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:55:53,134 INFO L371 AbstractCegarLoop]: === Iteration 11 === [popErr2RequiresViolation, popErr5RequiresViolation, popErr4RequiresViolation, popErr3RequiresViolation, popErr0RequiresViolation, popErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, pushErr5RequiresViolation, pushErr3RequiresViolation, pushErr0RequiresViolation, pushErr1RequiresViolation, pushErr7RequiresViolation, pushErr6RequiresViolation, pushErr2RequiresViolation, pushErr4RequiresViolation]=== [2018-02-02 09:55:53,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1524460851, now seen corresponding path program 1 times [2018-02-02 09:55:53,135 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:55:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 09:55:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 09:55:53,189 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-02 09:55:53,211 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-02-02 09:55:53,221 WARN L1215 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch1 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2018-02-02 09:55:53,222 WARN L1215 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch1 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2018-02-02 09:55:53,223 WARN L1215 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch1 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2018-02-02 09:55:53,224 WARN L1215 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch1 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2018-02-02 09:55:53,225 WARN L1215 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch1 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2018-02-02 09:55:53,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 09:55:53 BoogieIcfgContainer [2018-02-02 09:55:53,235 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 09:55:53,235 INFO L168 Benchmark]: Toolchain (without parser) took 2327.63 ms. Allocated memory was 397.4 MB in the beginning and 623.4 MB in the end (delta: 226.0 MB). Free memory was 354.1 MB in the beginning and 473.3 MB in the end (delta: -119.2 MB). Peak memory consumption was 106.8 MB. Max. memory is 5.3 GB. [2018-02-02 09:55:53,236 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 397.4 MB. Free memory is still 360.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 09:55:53,237 INFO L168 Benchmark]: CACSL2BoogieTranslator took 175.58 ms. Allocated memory is still 397.4 MB. Free memory was 354.1 MB in the beginning and 343.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-02-02 09:55:53,237 INFO L168 Benchmark]: Boogie Preprocessor took 28.66 ms. Allocated memory is still 397.4 MB. Free memory was 343.5 MB in the beginning and 340.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-02 09:55:53,237 INFO L168 Benchmark]: RCFGBuilder took 302.07 ms. Allocated memory is still 397.4 MB. Free memory was 340.9 MB in the beginning and 313.0 MB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 5.3 GB. [2018-02-02 09:55:53,237 INFO L168 Benchmark]: TraceAbstraction took 1818.23 ms. Allocated memory was 397.4 MB in the beginning and 623.4 MB in the end (delta: 226.0 MB). Free memory was 313.0 MB in the beginning and 473.3 MB in the end (delta: -160.3 MB). Peak memory consumption was 65.7 MB. Max. memory is 5.3 GB. [2018-02-02 09:55:53,238 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 397.4 MB. Free memory is still 360.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 175.58 ms. Allocated memory is still 397.4 MB. Free memory was 354.1 MB in the beginning and 343.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 28.66 ms. Allocated memory is still 397.4 MB. Free memory was 343.5 MB in the beginning and 340.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 302.07 ms. Allocated memory is still 397.4 MB. Free memory was 340.9 MB in the beginning and 313.0 MB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1818.23 ms. Allocated memory was 397.4 MB in the beginning and 623.4 MB in the end (delta: 226.0 MB). Free memory was 313.0 MB in the beginning and 473.3 MB in the end (delta: -160.3 MB). Peak memory consumption was 65.7 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch1 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch1 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch1 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch1 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch1 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 688]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 688. Possible FailurePath: [L625] int pc1 = 1; [L626] int pc4 = 1; [L624] struct cell *S; [L627] static struct cell *t1 = ((void *)0); [L628] static struct cell *x1 = ((void *)0); [L657] struct cell* garbage; [L658] static struct cell *t4 = ((void *)0); [L659] static struct cell *x4 = ((void *)0); [L662] static int res4; VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L690] S || 1 != pc4 || __VERIFIER_nondet_int() [L690] S || 1 != pc4 || __VERIFIER_nondet_int() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, __VERIFIER_nondet_int()=1, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, S || 1 != pc4 || __VERIFIER_nondet_int()=1, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L690] COND TRUE S || 1 != pc4 || __VERIFIER_nondet_int() [L691] COND TRUE __VERIFIER_nondet_int() [L692] CALL push() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L631] pc1++ [L632] case 1: VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L633] EXPR, FCALL malloc(sizeof(*x1)) VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, malloc(sizeof(*x1))={12:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L633] x1 = malloc(sizeof(*x1)) VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, malloc(sizeof(*x1))={12:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={12:0}, x4={0:0}] [L634] FCALL x1->data = 0 VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, malloc(sizeof(*x1))={12:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={12:0}, x4={0:0}] [L635] RET, FCALL x1->next = ((void *)0) VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, malloc(sizeof(*x1))={12:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={12:0}, x4={0:0}] [L692] push() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={12:0}, x4={0:0}] [L690] S || 1 != pc4 || __VERIFIER_nondet_int() [L690] S || 1 != pc4 || __VERIFIER_nondet_int() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, __VERIFIER_nondet_int()=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, S || 1 != pc4 || __VERIFIER_nondet_int()=0, t1={0:0}, t4={0:0}, x1={12:0}, x4={0:0}] [L690] COND FALSE !(S || 1 != pc4 || __VERIFIER_nondet_int()) [L696] COND FALSE !(\read(*garbage)) VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={12:0}, x4={0:0}] [L701] S = ((void *)0) [L702] t1 = ((void *)0) [L703] x1 = ((void *)0) [L704] t4 = ((void *)0) [L705] x4 = ((void *)0) [L706] return !!garbage; VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, \result=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 76 locations, 19 error locations. UNSAFE Result, 1.7s OverallTime, 11 OverallIterations, 2 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 932 SDtfs, 809 SDslu, 1466 SDs, 0 SdLazy, 368 SolverSat, 109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3128occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 8/12 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 323 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 189 NumberOfCodeBlocks, 189 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 7141 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 8/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/lockfree-3.2_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_09-55-53-244.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/lockfree-3.2_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_09-55-53-244.csv Received shutdown request...