/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-VariableLbe.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-abd8500 [2020-01-16 18:58:50,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 18:58:50,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 18:58:50,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-01-16 18:58:50,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-01-16 18:58:50,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-01-16 18:58:50,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-01-16 18:58:50,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-01-16 18:58:50,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-01-16 18:58:50,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-01-16 18:58:50,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-01-16 18:58:50,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-01-16 18:58:50,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-01-16 18:58:50,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-01-16 18:58:50,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-01-16 18:58:50,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-01-16 18:58:50,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-01-16 18:58:50,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-01-16 18:58:50,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-01-16 18:58:50,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-01-16 18:58:50,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-01-16 18:58:50,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-01-16 18:58:50,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-01-16 18:58:50,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-01-16 18:58:50,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-01-16 18:58:50,461 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-VariableLbe.epf [2020-01-16 18:58:50,474 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 18:58:50,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 18:58:50,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 18:58:50,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 18:58:50,476 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 18:58:50,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 18:58:50,477 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 18:58:50,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 18:58:50,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 18:58:50,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 18:58:50,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 18:58:50,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 18:58:50,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 18:58:50,478 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 18:58:50,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 18:58:50,478 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 18:58:50,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 18:58:50,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 18:58:50,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 18:58:50,479 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 18:58:50,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 18:58:50,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 18:58:50,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 18:58:50,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 18:58:50,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 18:58:50,480 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 18:58:50,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 18:58:50,481 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-01-16 18:58:50,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-01-16 18:58:50,481 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 18:58:50,739 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 18:58:50,763 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 18:58:50,767 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 18:58:50,768 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 18:58:50,768 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 18:58:50,769 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_3.bpl [2020-01-16 18:58:50,769 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_3.bpl' [2020-01-16 18:58:50,802 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 18:58:50,804 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 18:58:50,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 18:58:50,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 18:58:50,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 18:58:50,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:58:50" (1/1) ... [2020-01-16 18:58:50,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:58:50" (1/1) ... [2020-01-16 18:58:50,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 18:58:50,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 18:58:50,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 18:58:50,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 18:58:50,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:58:50" (1/1) ... [2020-01-16 18:58:50,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:58:50" (1/1) ... [2020-01-16 18:58:50,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:58:50" (1/1) ... [2020-01-16 18:58:50,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:58:50" (1/1) ... [2020-01-16 18:58:50,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:58:50" (1/1) ... [2020-01-16 18:58:50,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:58:50" (1/1) ... [2020-01-16 18:58:50,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:58:50" (1/1) ... [2020-01-16 18:58:50,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 18:58:50,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 18:58:50,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 18:58:50,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 18:58:50,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:58:50" (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 [2020-01-16 18:58:50,920 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 18:58:50,920 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 18:58:50,921 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 18:58:50,921 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 18:58:50,921 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 18:58:50,921 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 18:58:50,922 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 18:58:50,922 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 18:58:50,922 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 18:58:50,922 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 18:58:50,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 18:58:50,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 18:58:50,924 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-01-16 18:58:51,078 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 18:58:51,079 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 18:58:51,080 INFO L202 PluginConnector]: Adding new model example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 06:58:51 BoogieIcfgContainer [2020-01-16 18:58:51,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 18:58:51,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 18:58:51,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 18:58:51,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 18:58:51,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:58:50" (1/2) ... [2020-01-16 18:58:51,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe819a7 and model type example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 06:58:51, skipping insertion in model container [2020-01-16 18:58:51,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 06:58:51" (2/2) ... [2020-01-16 18:58:51,089 INFO L109 eAbstractionObserver]: Analyzing ICFG example_3.bpl [2020-01-16 18:58:51,099 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-01-16 18:58:51,100 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 18:58:51,108 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 18:58:51,109 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 18:58:51,180 INFO L250 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-01-16 18:58:51,202 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 18:58:51,202 INFO L375 AbstractCegarLoop]: Hoare is true [2020-01-16 18:58:51,202 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 18:58:51,202 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-01-16 18:58:51,202 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 18:58:51,203 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 18:58:51,203 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 18:58:51,203 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 18:58:51,220 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 24 transitions [2020-01-16 18:58:51,228 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions [2020-01-16 18:58:51,322 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2020-01-16 18:58:51,322 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-01-16 18:58:51,334 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. [2020-01-16 18:58:51,341 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions [2020-01-16 18:58:51,364 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2020-01-16 18:58:51,365 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-01-16 18:58:51,370 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. [2020-01-16 18:58:51,373 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 84 [2020-01-16 18:58:51,376 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-01-16 18:58:51,459 INFO L206 etLargeBlockEncoding]: Checked pairs total: 27 [2020-01-16 18:58:51,459 INFO L214 etLargeBlockEncoding]: Total number of compositions: 4 [2020-01-16 18:58:51,463 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 20 transitions [2020-01-16 18:58:51,472 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 36 states. [2020-01-16 18:58:51,474 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-01-16 18:58:51,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-01-16 18:58:51,482 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:58:51,483 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:58:51,483 INFO L426 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:58:51,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:58:51,490 INFO L82 PathProgramCache]: Analyzing trace with hash -630022353, now seen corresponding path program 1 times [2020-01-16 18:58:51,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:58:51,500 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258554454] [2020-01-16 18:58:51,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:58:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:58:51,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:58:51,794 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258554454] [2020-01-16 18:58:51,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:58:51,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-01-16 18:58:51,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358390844] [2020-01-16 18:58:51,801 INFO L458 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-01-16 18:58:51,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:58:51,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-01-16 18:58:51,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-01-16 18:58:51,818 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 5 states. [2020-01-16 18:58:51,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:58:51,894 INFO L93 Difference]: Finished difference Result 58 states and 104 transitions. [2020-01-16 18:58:51,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-01-16 18:58:51,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-01-16 18:58:51,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:58:51,907 INFO L225 Difference]: With dead ends: 58 [2020-01-16 18:58:51,907 INFO L226 Difference]: Without dead ends: 44 [2020-01-16 18:58:51,909 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 [2020-01-16 18:58:51,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-01-16 18:58:51,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2020-01-16 18:58:51,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-01-16 18:58:51,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 64 transitions. [2020-01-16 18:58:51,960 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 64 transitions. Word has length 10 [2020-01-16 18:58:51,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:58:51,960 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 64 transitions. [2020-01-16 18:58:51,960 INFO L479 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-01-16 18:58:51,961 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 64 transitions. [2020-01-16 18:58:51,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-01-16 18:58:51,962 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:58:51,962 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:58:51,962 INFO L426 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:58:51,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:58:51,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1034099385, now seen corresponding path program 2 times [2020-01-16 18:58:51,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:58:51,963 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020293877] [2020-01-16 18:58:51,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:58:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:58:52,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:58:52,096 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020293877] [2020-01-16 18:58:52,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:58:52,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-01-16 18:58:52,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496570697] [2020-01-16 18:58:52,099 INFO L458 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-01-16 18:58:52,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:58:52,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-01-16 18:58:52,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-01-16 18:58:52,100 INFO L87 Difference]: Start difference. First operand 35 states and 64 transitions. Second operand 5 states. [2020-01-16 18:58:52,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:58:52,173 INFO L93 Difference]: Finished difference Result 56 states and 97 transitions. [2020-01-16 18:58:52,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-01-16 18:58:52,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-01-16 18:58:52,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:58:52,175 INFO L225 Difference]: With dead ends: 56 [2020-01-16 18:58:52,175 INFO L226 Difference]: Without dead ends: 40 [2020-01-16 18:58:52,177 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 [2020-01-16 18:58:52,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-01-16 18:58:52,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 31. [2020-01-16 18:58:52,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-01-16 18:58:52,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 56 transitions. [2020-01-16 18:58:52,187 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 56 transitions. Word has length 10 [2020-01-16 18:58:52,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:58:52,188 INFO L478 AbstractCegarLoop]: Abstraction has 31 states and 56 transitions. [2020-01-16 18:58:52,188 INFO L479 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-01-16 18:58:52,188 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 56 transitions. [2020-01-16 18:58:52,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-01-16 18:58:52,191 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:58:52,191 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:58:52,193 INFO L426 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:58:52,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:58:52,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1610616079, now seen corresponding path program 3 times [2020-01-16 18:58:52,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:58:52,195 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190261931] [2020-01-16 18:58:52,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:58:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:58:52,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:58:52,320 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190261931] [2020-01-16 18:58:52,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:58:52,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-01-16 18:58:52,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755576025] [2020-01-16 18:58:52,321 INFO L458 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-01-16 18:58:52,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:58:52,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-01-16 18:58:52,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-01-16 18:58:52,322 INFO L87 Difference]: Start difference. First operand 31 states and 56 transitions. Second operand 5 states. [2020-01-16 18:58:52,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:58:52,355 INFO L93 Difference]: Finished difference Result 48 states and 81 transitions. [2020-01-16 18:58:52,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-01-16 18:58:52,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-01-16 18:58:52,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:58:52,356 INFO L225 Difference]: With dead ends: 48 [2020-01-16 18:58:52,357 INFO L226 Difference]: Without dead ends: 35 [2020-01-16 18:58:52,357 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 [2020-01-16 18:58:52,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-01-16 18:58:52,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2020-01-16 18:58:52,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-01-16 18:58:52,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 44 transitions. [2020-01-16 18:58:52,362 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 44 transitions. Word has length 10 [2020-01-16 18:58:52,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:58:52,363 INFO L478 AbstractCegarLoop]: Abstraction has 26 states and 44 transitions. [2020-01-16 18:58:52,363 INFO L479 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-01-16 18:58:52,363 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 44 transitions. [2020-01-16 18:58:52,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-01-16 18:58:52,363 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:58:52,364 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:58:52,364 INFO L426 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:58:52,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:58:52,364 INFO L82 PathProgramCache]: Analyzing trace with hash 940085819, now seen corresponding path program 4 times [2020-01-16 18:58:52,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:58:52,365 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574866521] [2020-01-16 18:58:52,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:58:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:58:52,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:58:52,485 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574866521] [2020-01-16 18:58:52,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:58:52,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-01-16 18:58:52,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91027343] [2020-01-16 18:58:52,486 INFO L458 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-01-16 18:58:52,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:58:52,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-01-16 18:58:52,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-01-16 18:58:52,490 INFO L87 Difference]: Start difference. First operand 26 states and 44 transitions. Second operand 5 states. [2020-01-16 18:58:52,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:58:52,526 INFO L93 Difference]: Finished difference Result 38 states and 64 transitions. [2020-01-16 18:58:52,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-01-16 18:58:52,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-01-16 18:58:52,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:58:52,528 INFO L225 Difference]: With dead ends: 38 [2020-01-16 18:58:52,528 INFO L226 Difference]: Without dead ends: 23 [2020-01-16 18:58:52,528 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 [2020-01-16 18:58:52,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-01-16 18:58:52,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-01-16 18:58:52,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-01-16 18:58:52,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2020-01-16 18:58:52,536 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 38 transitions. Word has length 10 [2020-01-16 18:58:52,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:58:52,537 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 38 transitions. [2020-01-16 18:58:52,537 INFO L479 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-01-16 18:58:52,537 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 38 transitions. [2020-01-16 18:58:52,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-01-16 18:58:52,537 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:58:52,538 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:58:52,538 INFO L426 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:58:52,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:58:52,538 INFO L82 PathProgramCache]: Analyzing trace with hash 960546515, now seen corresponding path program 5 times [2020-01-16 18:58:52,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:58:52,540 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198013371] [2020-01-16 18:58:52,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:58:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:58:52,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:58:52,640 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198013371] [2020-01-16 18:58:52,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:58:52,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-01-16 18:58:52,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367223301] [2020-01-16 18:58:52,641 INFO L458 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-01-16 18:58:52,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:58:52,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-01-16 18:58:52,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-01-16 18:58:52,642 INFO L87 Difference]: Start difference. First operand 23 states and 38 transitions. Second operand 5 states. [2020-01-16 18:58:52,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:58:52,680 INFO L93 Difference]: Finished difference Result 31 states and 50 transitions. [2020-01-16 18:58:52,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-01-16 18:58:52,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-01-16 18:58:52,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:58:52,681 INFO L225 Difference]: With dead ends: 31 [2020-01-16 18:58:52,682 INFO L226 Difference]: Without dead ends: 19 [2020-01-16 18:58:52,682 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 [2020-01-16 18:58:52,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-01-16 18:58:52,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-01-16 18:58:52,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-01-16 18:58:52,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 28 transitions. [2020-01-16 18:58:52,685 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 28 transitions. Word has length 10 [2020-01-16 18:58:52,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:58:52,686 INFO L478 AbstractCegarLoop]: Abstraction has 19 states and 28 transitions. [2020-01-16 18:58:52,686 INFO L479 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-01-16 18:58:52,686 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 28 transitions. [2020-01-16 18:58:52,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-01-16 18:58:52,687 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:58:52,687 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:58:52,687 INFO L426 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:58:52,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:58:52,688 INFO L82 PathProgramCache]: Analyzing trace with hash 988252145, now seen corresponding path program 6 times [2020-01-16 18:58:52,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:58:52,688 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86448510] [2020-01-16 18:58:52,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:58:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:58:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:58:52,788 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86448510] [2020-01-16 18:58:52,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:58:52,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-01-16 18:58:52,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088891529] [2020-01-16 18:58:52,789 INFO L458 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-01-16 18:58:52,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:58:52,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-01-16 18:58:52,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-01-16 18:58:52,790 INFO L87 Difference]: Start difference. First operand 19 states and 28 transitions. Second operand 5 states. [2020-01-16 18:58:52,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:58:52,816 INFO L93 Difference]: Finished difference Result 18 states and 27 transitions. [2020-01-16 18:58:52,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-01-16 18:58:52,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-01-16 18:58:52,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:58:52,816 INFO L225 Difference]: With dead ends: 18 [2020-01-16 18:58:52,817 INFO L226 Difference]: Without dead ends: 0 [2020-01-16 18:58:52,817 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 [2020-01-16 18:58:52,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-01-16 18:58:52,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-01-16 18:58:52,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-01-16 18:58:52,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-01-16 18:58:52,818 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-01-16 18:58:52,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:58:52,819 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-01-16 18:58:52,819 INFO L479 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-01-16 18:58:52,819 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-01-16 18:58:52,819 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-01-16 18:58:52,823 INFO L202 PluginConnector]: Adding new model example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.01 06:58:52 BasicIcfg [2020-01-16 18:58:52,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-01-16 18:58:52,826 INFO L168 Benchmark]: Toolchain (without parser) took 2021.78 ms. Allocated memory was 136.8 MB in the beginning and 169.3 MB in the end (delta: 32.5 MB). Free memory was 118.8 MB in the beginning and 67.5 MB in the end (delta: 51.3 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. [2020-01-16 18:58:52,827 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-01-16 18:58:52,828 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.66 ms. Allocated memory is still 136.8 MB. Free memory was 118.6 MB in the beginning and 117.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-01-16 18:58:52,829 INFO L168 Benchmark]: Boogie Preprocessor took 18.15 ms. Allocated memory is still 136.8 MB. Free memory was 117.0 MB in the beginning and 116.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-01-16 18:58:52,830 INFO L168 Benchmark]: RCFGBuilder took 222.29 ms. Allocated memory is still 136.8 MB. Free memory was 115.7 MB in the beginning and 105.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-01-16 18:58:52,831 INFO L168 Benchmark]: TraceAbstraction took 1742.07 ms. Allocated memory was 136.8 MB in the beginning and 169.3 MB in the end (delta: 32.5 MB). Free memory was 105.4 MB in the beginning and 67.5 MB in the end (delta: 37.8 MB). Peak memory consumption was 70.3 MB. Max. memory is 7.1 GB. [2020-01-16 18:58:52,835 INFO L335 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 0.18 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 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 34.66 ms. Allocated memory is still 136.8 MB. Free memory was 118.6 MB in the beginning and 117.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 18.15 ms. Allocated memory is still 136.8 MB. Free memory was 117.0 MB in the beginning and 116.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 222.29 ms. Allocated memory is still 136.8 MB. Free memory was 115.7 MB in the beginning and 105.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1742.07 ms. Allocated memory was 136.8 MB in the beginning and 169.3 MB in the end (delta: 32.5 MB). Free memory was 105.4 MB in the beginning and 67.5 MB in the end (delta: 37.8 MB). Peak memory consumption was 70.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.2s, 28 ProgramPointsBefore, 23 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: 0.2s, 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...