/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/example_multiple_interleavings.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 14:16:07,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 14:16:07,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 14:16:07,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 14:16:07,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 14:16:07,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 14:16:07,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 14:16:07,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 14:16:07,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 14:16:07,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 14:16:07,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 14:16:07,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 14:16:07,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 14:16:07,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 14:16:07,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 14:16:07,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 14:16:07,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 14:16:07,469 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 [2021-03-11 14:16:07,491 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 14:16:07,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 14:16:07,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 14:16:07,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 14:16:07,495 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 14:16:07,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 14:16:07,495 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 14:16:07,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 14:16:07,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 14:16:07,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 14:16:07,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 14:16:07,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 14:16:07,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 14:16:07,496 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 14:16:07,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 14:16:07,496 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 14:16:07,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 14:16:07,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 14:16:07,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 14:16:07,497 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 14:16:07,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 14:16:07,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 14:16:07,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 14:16:07,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 14:16:07,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 14:16:07,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 14:16:07,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 14:16:07,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 14:16:07,498 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 14:16:07,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 14:16:07,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 14:16:07,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 14:16:07,765 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 14:16:07,766 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 14:16:07,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example_multiple_interleavings.bpl [2021-03-11 14:16:07,767 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example_multiple_interleavings.bpl' [2021-03-11 14:16:07,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 14:16:07,800 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 14:16:07,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 14:16:07,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 14:16:07,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 14:16:07,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:07" (1/1) ... [2021-03-11 14:16:07,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:07" (1/1) ... [2021-03-11 14:16:07,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 14:16:07,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 14:16:07,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 14:16:07,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 14:16:07,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:07" (1/1) ... [2021-03-11 14:16:07,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:07" (1/1) ... [2021-03-11 14:16:07,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:07" (1/1) ... [2021-03-11 14:16:07,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:07" (1/1) ... [2021-03-11 14:16:07,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:07" (1/1) ... [2021-03-11 14:16:07,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:07" (1/1) ... [2021-03-11 14:16:07,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:07" (1/1) ... [2021-03-11 14:16:07,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 14:16:07,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 14:16:07,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 14:16:07,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 14:16:07,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:07" (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 [2021-03-11 14:16:07,886 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_y given in one single declaration [2021-03-11 14:16:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure set_y [2021-03-11 14:16:07,887 INFO L138 BoogieDeclarations]: Found implementation of procedure set_y [2021-03-11 14:16:07,887 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_x_1 given in one single declaration [2021-03-11 14:16:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure set_x_1 [2021-03-11 14:16:07,887 INFO L138 BoogieDeclarations]: Found implementation of procedure set_x_1 [2021-03-11 14:16:07,887 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_x_0 given in one single declaration [2021-03-11 14:16:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure set_x_0 [2021-03-11 14:16:07,887 INFO L138 BoogieDeclarations]: Found implementation of procedure set_x_0 [2021-03-11 14:16:07,887 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 14:16:07,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 14:16:07,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 14:16:07,888 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 14:16:07,980 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 14:16:07,980 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 14:16:07,981 INFO L202 PluginConnector]: Adding new model example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:16:07 BoogieIcfgContainer [2021-03-11 14:16:07,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 14:16:07,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 14:16:07,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 14:16:07,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 14:16:07,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:07" (1/2) ... [2021-03-11 14:16:07,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f86fd42 and model type example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:16:07, skipping insertion in model container [2021-03-11 14:16:07,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:16:07" (2/2) ... [2021-03-11 14:16:07,995 INFO L111 eAbstractionObserver]: Analyzing ICFG example_multiple_interleavings.bpl [2021-03-11 14:16:07,999 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 14:16:07,999 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 14:16:08,001 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 14:16:08,001 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 14:16:08,035 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2021-03-11 14:16:08,046 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 14:16:08,058 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 14:16:08,059 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 14:16:08,059 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 14:16:08,059 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 14:16:08,059 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 14:16:08,059 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 14:16:08,059 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 14:16:08,059 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 14:16:08,066 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 14:16:08,072 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 24 transitions, 90 flow [2021-03-11 14:16:08,074 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 24 transitions, 90 flow [2021-03-11 14:16:08,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 90 flow [2021-03-11 14:16:08,090 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2021-03-11 14:16:08,090 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-11 14:16:08,092 INFO L84 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 32 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 20. Up to 6 conditions per place. [2021-03-11 14:16:08,093 INFO L116 LiptonReduction]: Number of co-enabled transitions 84 [2021-03-11 14:16:08,199 INFO L131 LiptonReduction]: Checked pairs total: 117 [2021-03-11 14:16:08,199 INFO L133 LiptonReduction]: Total number of compositions: 4 [2021-03-11 14:16:08,205 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 20 transitions, 82 flow [2021-03-11 14:16:08,211 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 36 states, 34 states have (on average 2.0) internal successors, (68), 35 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:16:08,212 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 34 states have (on average 2.0) internal successors, (68), 35 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:16:08,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 14:16:08,216 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:16:08,216 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:16:08,216 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:16:08,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:16:08,220 INFO L82 PathProgramCache]: Analyzing trace with hash -630022352, now seen corresponding path program 1 times [2021-03-11 14:16:08,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:16:08,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835182545] [2021-03-11 14:16:08,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:16:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:16:08,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:16:08,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:16:08,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:16:08,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 14:16:08,310 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-11 14:16:08,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:16:08,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:16:08,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835182545] [2021-03-11 14:16:08,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:16:08,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 14:16:08,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90831158] [2021-03-11 14:16:08,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 14:16:08,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:16:08,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 14:16:08,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 14:16:08,333 INFO L87 Difference]: Start difference. First operand has 36 states, 34 states have (on average 2.0) internal successors, (68), 35 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:16:08,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:16:08,368 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2021-03-11 14:16:08,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 14:16:08,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-03-11 14:16:08,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:16:08,376 INFO L225 Difference]: With dead ends: 63 [2021-03-11 14:16:08,376 INFO L226 Difference]: Without dead ends: 48 [2021-03-11 14:16:08,377 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 14:16:08,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-03-11 14:16:08,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 35. [2021-03-11 14:16:08,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 34 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:16:08,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 64 transitions. [2021-03-11 14:16:08,407 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 64 transitions. Word has length 10 [2021-03-11 14:16:08,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:16:08,408 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 64 transitions. [2021-03-11 14:16:08,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:16:08,408 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 64 transitions. [2021-03-11 14:16:08,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 14:16:08,409 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:16:08,409 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:16:08,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 14:16:08,410 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:16:08,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:16:08,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1034099386, now seen corresponding path program 2 times [2021-03-11 14:16:08,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:16:08,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062696532] [2021-03-11 14:16:08,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:16:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:16:08,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:16:08,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:16:08,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:16:08,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:16:08,456 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-11 14:16:08,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:16:08,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:16:08,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062696532] [2021-03-11 14:16:08,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:16:08,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 14:16:08,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837844145] [2021-03-11 14:16:08,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 14:16:08,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:16:08,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 14:16:08,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 14:16:08,467 INFO L87 Difference]: Start difference. First operand 35 states and 64 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:16:08,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:16:08,477 INFO L93 Difference]: Finished difference Result 47 states and 84 transitions. [2021-03-11 14:16:08,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 14:16:08,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-03-11 14:16:08,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:16:08,477 INFO L225 Difference]: With dead ends: 47 [2021-03-11 14:16:08,478 INFO L226 Difference]: Without dead ends: 31 [2021-03-11 14:16:08,478 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 14:16:08,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-03-11 14:16:08,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2021-03-11 14:16:08,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:16:08,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 46 transitions. [2021-03-11 14:16:08,481 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 46 transitions. Word has length 10 [2021-03-11 14:16:08,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:16:08,481 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 46 transitions. [2021-03-11 14:16:08,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:16:08,481 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 46 transitions. [2021-03-11 14:16:08,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 14:16:08,481 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:16:08,481 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:16:08,481 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 14:16:08,482 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:16:08,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:16:08,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1610616078, now seen corresponding path program 3 times [2021-03-11 14:16:08,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:16:08,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620616539] [2021-03-11 14:16:08,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:16:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:16:08,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:16:08,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:16:08,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:16:08,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:16:08,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:16:08,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:16:08,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:16:08,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620616539] [2021-03-11 14:16:08,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:16:08,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 14:16:08,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085297180] [2021-03-11 14:16:08,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 14:16:08,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:16:08,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 14:16:08,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 14:16:08,523 INFO L87 Difference]: Start difference. First operand 27 states and 46 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:16:08,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:16:08,538 INFO L93 Difference]: Finished difference Result 35 states and 58 transitions. [2021-03-11 14:16:08,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 14:16:08,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-03-11 14:16:08,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:16:08,539 INFO L225 Difference]: With dead ends: 35 [2021-03-11 14:16:08,539 INFO L226 Difference]: Without dead ends: 22 [2021-03-11 14:16:08,540 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 14:16:08,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-03-11 14:16:08,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-03-11 14:16:08,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:16:08,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 34 transitions. [2021-03-11 14:16:08,544 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 34 transitions. Word has length 10 [2021-03-11 14:16:08,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:16:08,544 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 34 transitions. [2021-03-11 14:16:08,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:16:08,545 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 34 transitions. [2021-03-11 14:16:08,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 14:16:08,545 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:16:08,545 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:16:08,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 14:16:08,546 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:16:08,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:16:08,546 INFO L82 PathProgramCache]: Analyzing trace with hash 940085820, now seen corresponding path program 4 times [2021-03-11 14:16:08,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:16:08,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365818843] [2021-03-11 14:16:08,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:16:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:16:08,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:16:08,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:16:08,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:16:08,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:16:08,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:16:08,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:16:08,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:16:08,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365818843] [2021-03-11 14:16:08,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:16:08,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 14:16:08,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433047709] [2021-03-11 14:16:08,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 14:16:08,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:16:08,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 14:16:08,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 14:16:08,575 INFO L87 Difference]: Start difference. First operand 22 states and 34 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:16:08,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:16:08,585 INFO L93 Difference]: Finished difference Result 21 states and 33 transitions. [2021-03-11 14:16:08,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 14:16:08,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-03-11 14:16:08,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:16:08,586 INFO L225 Difference]: With dead ends: 21 [2021-03-11 14:16:08,586 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 14:16:08,586 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 14:16:08,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 14:16:08,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 14:16:08,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:16:08,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 14:16:08,588 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-03-11 14:16:08,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:16:08,588 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 14:16:08,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:16:08,588 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 14:16:08,588 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 14:16:08,588 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 14:16:08,591 INFO L202 PluginConnector]: Adding new model example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:16:08 BasicIcfg [2021-03-11 14:16:08,591 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 14:16:08,592 INFO L168 Benchmark]: Toolchain (without parser) took 794.39 ms. Allocated memory was 255.9 MB in the beginning and 373.3 MB in the end (delta: 117.4 MB). Free memory was 236.8 MB in the beginning and 356.7 MB in the end (delta: -119.9 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 14:16:08,593 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 14:16:08,596 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.43 ms. Allocated memory is still 255.9 MB. Free memory was 236.4 MB in the beginning and 234.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 14:16:08,597 INFO L168 Benchmark]: Boogie Preprocessor took 10.04 ms. Allocated memory is still 255.9 MB. Free memory was 234.9 MB in the beginning and 234.0 MB in the end (delta: 915.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 14:16:08,597 INFO L168 Benchmark]: RCFGBuilder took 149.41 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 225.7 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-11 14:16:08,597 INFO L168 Benchmark]: TraceAbstraction took 600.03 ms. Allocated memory was 255.9 MB in the beginning and 373.3 MB in the end (delta: 117.4 MB). Free memory was 240.8 MB in the beginning and 356.7 MB in the end (delta: -115.8 MB). Peak memory consumption was 222.8 kB. Max. memory is 16.0 GB. [2021-03-11 14:16:08,601 INFO L339 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 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 18.43 ms. Allocated memory is still 255.9 MB. Free memory was 236.4 MB in the beginning and 234.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.04 ms. Allocated memory is still 255.9 MB. Free memory was 234.9 MB in the beginning and 234.0 MB in the end (delta: 915.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 149.41 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 225.7 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 600.03 ms. Allocated memory was 255.9 MB in the beginning and 373.3 MB in the end (delta: 117.4 MB). Free memory was 240.8 MB in the beginning and 356.7 MB in the end (delta: -115.8 MB). Peak memory consumption was 222.8 kB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 125.1ms, 28 PlacesBefore, 24 PlacesAfterwards, 24 TransitionsBefore, 20 TransitionsAfterwards, 84 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 117 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 76, positive: 68, positive conditional: 0, positive unconditional: 68, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 50, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 50, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 18, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 76, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 50, unknown conditional: 0, unknown unconditional: 50] , Statistics on independence cache: Total cache size (in pairs): 14, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - 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. VerificationResult: SAFE, OverallTime: 531.8ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 6.3ms, AutomataDifference: 97.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 152.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 98 SDtfs, 82 SDslu, 72 SDs, 0 SdLazy, 21 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 26.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 29.3ms AutomataMinimizationTime, 4 MinimizatonAttempts, 17 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.0ms SsaConstructionTime, 19.1ms SatisfiabilityAnalysisTime, 134.1ms InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...