/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d9e330d [2020-02-10 20:11:47,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-02-10 20:11:47,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-02-10 20:11:47,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-02-10 20:11:47,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-02-10 20:11:47,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-02-10 20:11:47,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-02-10 20:11:47,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-02-10 20:11:47,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-02-10 20:11:47,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-02-10 20:11:47,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-02-10 20:11:47,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-02-10 20:11:47,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-02-10 20:11:47,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-02-10 20:11:47,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-02-10 20:11:47,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-02-10 20:11:47,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-02-10 20:11:47,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-02-10 20:11:47,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-02-10 20:11:47,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-02-10 20:11:47,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-02-10 20:11:47,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-02-10 20:11:47,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-02-10 20:11:47,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-02-10 20:11:47,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-02-10 20:11:47,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-02-10 20:11:47,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-02-10 20:11:47,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-02-10 20:11:47,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-02-10 20:11:47,689 INFO L113 SettingsManager]: Loading preferences was successful [2020-02-10 20:11:47,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-02-10 20:11:47,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-02-10 20:11:47,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-02-10 20:11:47,691 INFO L138 SettingsManager]: * Use SBE=true [2020-02-10 20:11:47,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-02-10 20:11:47,691 INFO L138 SettingsManager]: * sizeof long=4 [2020-02-10 20:11:47,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-02-10 20:11:47,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-02-10 20:11:47,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-02-10 20:11:47,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-02-10 20:11:47,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-02-10 20:11:47,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-02-10 20:11:47,692 INFO L138 SettingsManager]: * sizeof long double=12 [2020-02-10 20:11:47,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-02-10 20:11:47,693 INFO L138 SettingsManager]: * Use constant arrays=true [2020-02-10 20:11:47,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-02-10 20:11:47,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-02-10 20:11:47,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-02-10 20:11:47,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-02-10 20:11:47,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-02-10 20:11:47,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-10 20:11:47,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-02-10 20:11:47,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-02-10 20:11:47,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-02-10 20:11:47,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-02-10 20:11:47,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-02-10 20:11:47,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-02-10 20:11:47,695 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-02-10 20:11:47,976 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-02-10 20:11:47,987 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-02-10 20:11:47,992 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-02-10 20:11:47,994 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-02-10 20:11:47,995 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-02-10 20:11:47,996 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_3.bpl [2020-02-10 20:11:47,996 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_3.bpl' [2020-02-10 20:11:48,029 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-02-10 20:11:48,032 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-02-10 20:11:48,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-02-10 20:11:48,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-02-10 20:11:48,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-02-10 20:11:48,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 08:11:48" (1/1) ... [2020-02-10 20:11:48,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 08:11:48" (1/1) ... [2020-02-10 20:11:48,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-02-10 20:11:48,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-02-10 20:11:48,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-02-10 20:11:48,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-02-10 20:11:48,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 08:11:48" (1/1) ... [2020-02-10 20:11:48,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 08:11:48" (1/1) ... [2020-02-10 20:11:48,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 08:11:48" (1/1) ... [2020-02-10 20:11:48,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 08:11:48" (1/1) ... [2020-02-10 20:11:48,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 08:11:48" (1/1) ... [2020-02-10 20:11:48,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 08:11:48" (1/1) ... [2020-02-10 20:11:48,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 08:11:48" (1/1) ... [2020-02-10 20:11:48,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-02-10 20:11:48,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-02-10 20:11:48,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-02-10 20:11:48,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-02-10 20:11:48,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 08:11:48" (1/1) ... No working directory specified, using /storage/repos/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 [2020-02-10 20:11:48,160 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-02-10 20:11:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-02-10 20:11:48,161 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-02-10 20:11:48,163 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-02-10 20:11:48,163 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-02-10 20:11:48,163 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-02-10 20:11:48,164 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-02-10 20:11:48,164 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-02-10 20:11:48,164 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-02-10 20:11:48,164 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-02-10 20:11:48,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-02-10 20:11:48,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-02-10 20:11:48,166 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-02-10 20:11:48,348 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-02-10 20:11:48,348 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-02-10 20:11:48,353 INFO L202 PluginConnector]: Adding new model example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 08:11:48 BoogieIcfgContainer [2020-02-10 20:11:48,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-02-10 20:11:48,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-02-10 20:11:48,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-02-10 20:11:48,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-02-10 20:11:48,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 08:11:48" (1/2) ... [2020-02-10 20:11:48,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b06139 and model type example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 08:11:48, skipping insertion in model container [2020-02-10 20:11:48,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 08:11:48" (2/2) ... [2020-02-10 20:11:48,364 INFO L109 eAbstractionObserver]: Analyzing ICFG example_3.bpl [2020-02-10 20:11:48,374 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-02-10 20:11:48,375 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-02-10 20:11:48,382 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-02-10 20:11:48,383 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-02-10 20:11:48,523 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-02-10 20:11:48,546 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-02-10 20:11:48,546 INFO L376 AbstractCegarLoop]: Hoare is true [2020-02-10 20:11:48,546 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-02-10 20:11:48,546 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-02-10 20:11:48,546 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-02-10 20:11:48,547 INFO L380 AbstractCegarLoop]: Difference is false [2020-02-10 20:11:48,547 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-02-10 20:11:48,547 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-02-10 20:11:48,561 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 24 transitions [2020-02-10 20:11:48,562 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions [2020-02-10 20:11:48,606 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2020-02-10 20:11:48,606 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-02-10 20:11:48,611 INFO L76 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 24 events. 5/24 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs. 0/23 useless extension candidates. Maximal degree in co-relation 20. Up to 6 conditions per place. [2020-02-10 20:11:48,613 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions [2020-02-10 20:11:48,625 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2020-02-10 20:11:48,625 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-02-10 20:11:48,626 INFO L76 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 24 events. 5/24 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs. 0/23 useless extension candidates. Maximal degree in co-relation 20. Up to 6 conditions per place. [2020-02-10 20:11:48,627 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 84 [2020-02-10 20:11:48,628 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-02-10 20:11:48,704 INFO L206 etLargeBlockEncoding]: Checked pairs total: 27 [2020-02-10 20:11:48,705 INFO L214 etLargeBlockEncoding]: Total number of compositions: 4 [2020-02-10 20:11:48,709 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 20 transitions [2020-02-10 20:11:48,719 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 36 states. [2020-02-10 20:11:48,722 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-02-10 20:11:48,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-02-10 20:11:48,729 INFO L407 BasicCegarLoop]: Found error trace [2020-02-10 20:11:48,731 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 20:11:48,731 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 20:11:48,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 20:11:48,739 INFO L82 PathProgramCache]: Analyzing trace with hash -630022353, now seen corresponding path program 1 times [2020-02-10 20:11:48,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 20:11:48,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310346081] [2020-02-10 20:11:48,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 20:11:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 20:11:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 20:11:49,046 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310346081] [2020-02-10 20:11:49,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 20:11:49,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-02-10 20:11:49,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114810619] [2020-02-10 20:11:49,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-02-10 20:11:49,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 20:11:49,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-02-10 20:11:49,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-02-10 20:11:49,072 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 5 states. [2020-02-10 20:11:49,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-02-10 20:11:49,190 INFO L93 Difference]: Finished difference Result 58 states and 104 transitions. [2020-02-10 20:11:49,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-02-10 20:11:49,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-02-10 20:11:49,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-02-10 20:11:49,204 INFO L225 Difference]: With dead ends: 58 [2020-02-10 20:11:49,205 INFO L226 Difference]: Without dead ends: 44 [2020-02-10 20:11:49,209 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-02-10 20:11:49,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-02-10 20:11:49,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2020-02-10 20:11:49,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-02-10 20:11:49,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 64 transitions. [2020-02-10 20:11:49,291 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 64 transitions. Word has length 10 [2020-02-10 20:11:49,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-02-10 20:11:49,292 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 64 transitions. [2020-02-10 20:11:49,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-02-10 20:11:49,293 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 64 transitions. [2020-02-10 20:11:49,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-02-10 20:11:49,296 INFO L407 BasicCegarLoop]: Found error trace [2020-02-10 20:11:49,297 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 20:11:49,297 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 20:11:49,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 20:11:49,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1034099385, now seen corresponding path program 2 times [2020-02-10 20:11:49,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 20:11:49,299 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560709637] [2020-02-10 20:11:49,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 20:11:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 20:11:49,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 20:11:49,472 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560709637] [2020-02-10 20:11:49,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 20:11:49,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-02-10 20:11:49,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060051533] [2020-02-10 20:11:49,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-02-10 20:11:49,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 20:11:49,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-02-10 20:11:49,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-02-10 20:11:49,477 INFO L87 Difference]: Start difference. First operand 35 states and 64 transitions. Second operand 5 states. [2020-02-10 20:11:49,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-02-10 20:11:49,545 INFO L93 Difference]: Finished difference Result 56 states and 97 transitions. [2020-02-10 20:11:49,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-02-10 20:11:49,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-02-10 20:11:49,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-02-10 20:11:49,547 INFO L225 Difference]: With dead ends: 56 [2020-02-10 20:11:49,547 INFO L226 Difference]: Without dead ends: 40 [2020-02-10 20:11:49,549 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-02-10 20:11:49,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-02-10 20:11:49,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 31. [2020-02-10 20:11:49,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-02-10 20:11:49,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 56 transitions. [2020-02-10 20:11:49,559 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 56 transitions. Word has length 10 [2020-02-10 20:11:49,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-02-10 20:11:49,559 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 56 transitions. [2020-02-10 20:11:49,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-02-10 20:11:49,560 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 56 transitions. [2020-02-10 20:11:49,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-02-10 20:11:49,560 INFO L407 BasicCegarLoop]: Found error trace [2020-02-10 20:11:49,561 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 20:11:49,561 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 20:11:49,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 20:11:49,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1610616079, now seen corresponding path program 3 times [2020-02-10 20:11:49,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 20:11:49,562 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379551267] [2020-02-10 20:11:49,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 20:11:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 20:11:49,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 20:11:49,685 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379551267] [2020-02-10 20:11:49,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 20:11:49,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-02-10 20:11:49,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941427456] [2020-02-10 20:11:49,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-02-10 20:11:49,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 20:11:49,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-02-10 20:11:49,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-02-10 20:11:49,687 INFO L87 Difference]: Start difference. First operand 31 states and 56 transitions. Second operand 5 states. [2020-02-10 20:11:49,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-02-10 20:11:49,725 INFO L93 Difference]: Finished difference Result 48 states and 81 transitions. [2020-02-10 20:11:49,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-02-10 20:11:49,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-02-10 20:11:49,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-02-10 20:11:49,727 INFO L225 Difference]: With dead ends: 48 [2020-02-10 20:11:49,727 INFO L226 Difference]: Without dead ends: 35 [2020-02-10 20:11:49,727 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-02-10 20:11:49,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-02-10 20:11:49,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2020-02-10 20:11:49,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-02-10 20:11:49,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 44 transitions. [2020-02-10 20:11:49,733 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 44 transitions. Word has length 10 [2020-02-10 20:11:49,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-02-10 20:11:49,733 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 44 transitions. [2020-02-10 20:11:49,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-02-10 20:11:49,733 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 44 transitions. [2020-02-10 20:11:49,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-02-10 20:11:49,734 INFO L407 BasicCegarLoop]: Found error trace [2020-02-10 20:11:49,734 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 20:11:49,735 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 20:11:49,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 20:11:49,735 INFO L82 PathProgramCache]: Analyzing trace with hash 940085819, now seen corresponding path program 4 times [2020-02-10 20:11:49,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 20:11:49,736 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605753828] [2020-02-10 20:11:49,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 20:11:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 20:11:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 20:11:49,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605753828] [2020-02-10 20:11:49,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 20:11:49,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-02-10 20:11:49,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765923971] [2020-02-10 20:11:49,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-02-10 20:11:49,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 20:11:49,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-02-10 20:11:49,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-02-10 20:11:49,866 INFO L87 Difference]: Start difference. First operand 26 states and 44 transitions. Second operand 5 states. [2020-02-10 20:11:49,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-02-10 20:11:49,904 INFO L93 Difference]: Finished difference Result 38 states and 64 transitions. [2020-02-10 20:11:49,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-02-10 20:11:49,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-02-10 20:11:49,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-02-10 20:11:49,905 INFO L225 Difference]: With dead ends: 38 [2020-02-10 20:11:49,905 INFO L226 Difference]: Without dead ends: 23 [2020-02-10 20:11:49,906 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-02-10 20:11:49,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-02-10 20:11:49,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-02-10 20:11:49,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-02-10 20:11:49,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2020-02-10 20:11:49,911 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 38 transitions. Word has length 10 [2020-02-10 20:11:49,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-02-10 20:11:49,911 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 38 transitions. [2020-02-10 20:11:49,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-02-10 20:11:49,912 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 38 transitions. [2020-02-10 20:11:49,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-02-10 20:11:49,912 INFO L407 BasicCegarLoop]: Found error trace [2020-02-10 20:11:49,913 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 20:11:49,913 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 20:11:49,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 20:11:49,913 INFO L82 PathProgramCache]: Analyzing trace with hash 960546515, now seen corresponding path program 5 times [2020-02-10 20:11:49,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 20:11:49,914 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710121871] [2020-02-10 20:11:49,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 20:11:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 20:11:50,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 20:11:50,016 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710121871] [2020-02-10 20:11:50,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 20:11:50,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-02-10 20:11:50,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171108068] [2020-02-10 20:11:50,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-02-10 20:11:50,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 20:11:50,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-02-10 20:11:50,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-02-10 20:11:50,019 INFO L87 Difference]: Start difference. First operand 23 states and 38 transitions. Second operand 5 states. [2020-02-10 20:11:50,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-02-10 20:11:50,053 INFO L93 Difference]: Finished difference Result 31 states and 50 transitions. [2020-02-10 20:11:50,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-02-10 20:11:50,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-02-10 20:11:50,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-02-10 20:11:50,054 INFO L225 Difference]: With dead ends: 31 [2020-02-10 20:11:50,054 INFO L226 Difference]: Without dead ends: 19 [2020-02-10 20:11:50,055 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-02-10 20:11:50,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-02-10 20:11:50,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-02-10 20:11:50,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-02-10 20:11:50,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 28 transitions. [2020-02-10 20:11:50,058 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 28 transitions. Word has length 10 [2020-02-10 20:11:50,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-02-10 20:11:50,059 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 28 transitions. [2020-02-10 20:11:50,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-02-10 20:11:50,059 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 28 transitions. [2020-02-10 20:11:50,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-02-10 20:11:50,060 INFO L407 BasicCegarLoop]: Found error trace [2020-02-10 20:11:50,060 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 20:11:50,060 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-10 20:11:50,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 20:11:50,061 INFO L82 PathProgramCache]: Analyzing trace with hash 988252145, now seen corresponding path program 6 times [2020-02-10 20:11:50,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 20:11:50,061 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217995936] [2020-02-10 20:11:50,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 20:11:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 20:11:50,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 20:11:50,167 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217995936] [2020-02-10 20:11:50,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 20:11:50,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-02-10 20:11:50,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372042771] [2020-02-10 20:11:50,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-02-10 20:11:50,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 20:11:50,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-02-10 20:11:50,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-02-10 20:11:50,171 INFO L87 Difference]: Start difference. First operand 19 states and 28 transitions. Second operand 5 states. [2020-02-10 20:11:50,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-02-10 20:11:50,193 INFO L93 Difference]: Finished difference Result 18 states and 27 transitions. [2020-02-10 20:11:50,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-02-10 20:11:50,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-02-10 20:11:50,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-02-10 20:11:50,194 INFO L225 Difference]: With dead ends: 18 [2020-02-10 20:11:50,194 INFO L226 Difference]: Without dead ends: 0 [2020-02-10 20:11:50,194 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-02-10 20:11:50,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-02-10 20:11:50,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-02-10 20:11:50,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-02-10 20:11:50,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-02-10 20:11:50,196 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-02-10 20:11:50,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-02-10 20:11:50,196 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-02-10 20:11:50,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-02-10 20:11:50,197 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-02-10 20:11:50,197 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-02-10 20:11:50,201 INFO L202 PluginConnector]: Adding new model example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 08:11:50 BasicIcfg [2020-02-10 20:11:50,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-02-10 20:11:50,207 INFO L168 Benchmark]: Toolchain (without parser) took 2172.89 ms. Allocated memory was 144.2 MB in the beginning and 175.6 MB in the end (delta: 31.5 MB). Free memory was 118.1 MB in the beginning and 66.4 MB in the end (delta: 51.6 MB). Peak memory consumption was 83.1 MB. Max. memory is 7.1 GB. [2020-02-10 20:11:50,209 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.41 ms. Allocated memory is still 144.2 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-02-10 20:11:50,217 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.49 ms. Allocated memory is still 144.2 MB. Free memory was 117.9 MB in the beginning and 116.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-02-10 20:11:50,219 INFO L168 Benchmark]: Boogie Preprocessor took 18.26 ms. Allocated memory is still 144.2 MB. Free memory was 116.2 MB in the beginning and 115.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-02-10 20:11:50,220 INFO L168 Benchmark]: RCFGBuilder took 270.53 ms. Allocated memory is still 144.2 MB. Free memory was 115.1 MB in the beginning and 104.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-02-10 20:11:50,221 INFO L168 Benchmark]: TraceAbstraction took 1846.73 ms. Allocated memory was 144.2 MB in the beginning and 175.6 MB in the end (delta: 31.5 MB). Free memory was 104.4 MB in the beginning and 66.4 MB in the end (delta: 37.9 MB). Peak memory consumption was 69.4 MB. Max. memory is 7.1 GB. [2020-02-10 20:11:50,230 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.41 ms. Allocated memory is still 144.2 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 31.49 ms. Allocated memory is still 144.2 MB. Free memory was 117.9 MB in the beginning and 116.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 18.26 ms. Allocated memory is still 144.2 MB. Free memory was 116.2 MB in the beginning and 115.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 270.53 ms. Allocated memory is still 144.2 MB. Free memory was 115.1 MB in the beginning and 104.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1846.73 ms. Allocated memory was 144.2 MB in the beginning and 175.6 MB in the end (delta: 31.5 MB). Free memory was 104.4 MB in the beginning and 66.4 MB in the end (delta: 37.9 MB). Peak memory consumption was 69.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.1s, 28 ProgramPointsBefore, 24 ProgramPointsAfterwards, 24 TransitionsBefore, 20 TransitionsAfterwards, 84 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 24 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 27 CheckedPairsTotal, 4 TotalNumberOfCompositions - PositiveResult [Line: 19]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. Result: SAFE, OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 154 SDtfs, 234 SDslu, 194 SDs, 0 SdLazy, 45 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 27 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 4734 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...