/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-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-12 00:19:04,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-12 00:19:04,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-12 00:19:04,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-12 00:19:04,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-12 00:19:04,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-12 00:19:04,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-12 00:19:04,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-12 00:19:04,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-12 00:19:04,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-12 00:19:04,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-12 00:19:05,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-12 00:19:05,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-12 00:19:05,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-12 00:19:05,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-12 00:19:05,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-12 00:19:05,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-12 00:19:05,015 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-PN-SemanticLbe.epf [2021-03-12 00:19:05,034 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-12 00:19:05,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-12 00:19:05,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-12 00:19:05,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-12 00:19:05,036 INFO L138 SettingsManager]: * Use SBE=true [2021-03-12 00:19:05,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-12 00:19:05,036 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-12 00:19:05,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-12 00:19:05,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-12 00:19:05,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-12 00:19:05,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-12 00:19:05,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-12 00:19:05,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-12 00:19:05,038 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-12 00:19:05,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-12 00:19:05,038 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-12 00:19:05,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-12 00:19:05,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-12 00:19:05,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-12 00:19:05,038 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-12 00:19:05,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-12 00:19:05,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-12 00:19:05,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-12 00:19:05,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-12 00:19:05,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-12 00:19:05,039 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-12 00:19:05,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-12 00:19:05,040 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-12 00:19:05,040 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-12 00:19:05,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-12 00:19:05,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-12 00:19:05,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-12 00:19:05,365 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-12 00:19:05,366 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-12 00:19:05,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl [2021-03-12 00:19:05,367 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl' [2021-03-12 00:19:05,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-12 00:19:05,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-12 00:19:05,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-12 00:19:05,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-12 00:19:05,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-12 00:19:05,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:19:05" (1/1) ... [2021-03-12 00:19:05,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:19:05" (1/1) ... [2021-03-12 00:19:05,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-12 00:19:05,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-12 00:19:05,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-12 00:19:05,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-12 00:19:05,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:19:05" (1/1) ... [2021-03-12 00:19:05,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:19:05" (1/1) ... [2021-03-12 00:19:05,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:19:05" (1/1) ... [2021-03-12 00:19:05,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:19:05" (1/1) ... [2021-03-12 00:19:05,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:19:05" (1/1) ... [2021-03-12 00:19:05,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:19:05" (1/1) ... [2021-03-12 00:19:05,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:19:05" (1/1) ... [2021-03-12 00:19:05,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-12 00:19:05,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-12 00:19:05,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-12 00:19:05,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-12 00:19:05,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:19:05" (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 [2021-03-12 00:19:05,528 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-12 00:19:05,528 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-12 00:19:05,528 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-12 00:19:05,528 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-12 00:19:05,529 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-12 00:19:05,529 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-12 00:19:05,529 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-12 00:19:05,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-12 00:19:05,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-12 00:19:05,530 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-12 00:19:05,736 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-12 00:19:05,737 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-12 00:19:05,739 INFO L202 PluginConnector]: Adding new model misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 12:19:05 BoogieIcfgContainer [2021-03-12 00:19:05,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-12 00:19:05,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-12 00:19:05,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-12 00:19:05,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-12 00:19:05,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:19:05" (1/2) ... [2021-03-12 00:19:05,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ede8c2a and model type misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.03 12:19:05, skipping insertion in model container [2021-03-12 00:19:05,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 12:19:05" (2/2) ... [2021-03-12 00:19:05,747 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-2-unrolled.wvr.bpl [2021-03-12 00:19:05,755 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-12 00:19:05,766 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-12 00:19:05,767 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-12 00:19:05,823 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-12 00:19:05,856 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-12 00:19:05,884 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-12 00:19:05,884 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-12 00:19:05,884 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-12 00:19:05,885 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-12 00:19:05,885 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-12 00:19:05,885 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-12 00:19:05,885 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-12 00:19:05,885 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-12 00:19:05,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 25 transitions, 66 flow [2021-03-12 00:19:05,910 INFO L129 PetriNetUnfolder]: 2/23 cut-off events. [2021-03-12 00:19:05,910 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-12 00:19:05,913 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 23 events. 2/23 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2021-03-12 00:19:05,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 25 transitions, 66 flow [2021-03-12 00:19:05,916 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2021-03-12 00:19:05,919 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-12 00:19:05,928 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 21 transitions, 54 flow [2021-03-12 00:19:05,931 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 21 transitions, 54 flow [2021-03-12 00:19:05,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 21 transitions, 54 flow [2021-03-12 00:19:05,937 INFO L129 PetriNetUnfolder]: 2/21 cut-off events. [2021-03-12 00:19:05,938 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-12 00:19:05,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 2/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2021-03-12 00:19:05,939 INFO L116 LiptonReduction]: Number of co-enabled transitions 126 [2021-03-12 00:19:06,250 INFO L131 LiptonReduction]: Checked pairs total: 98 [2021-03-12 00:19:06,251 INFO L133 LiptonReduction]: Total number of compositions: 11 [2021-03-12 00:19:06,252 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 335 [2021-03-12 00:19:06,260 INFO L129 PetriNetUnfolder]: 2/9 cut-off events. [2021-03-12 00:19:06,261 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-12 00:19:06,261 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:19:06,261 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:19:06,262 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:19:06,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:19:06,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1499159552, now seen corresponding path program 1 times [2021-03-12 00:19:06,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:19:06,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269725190] [2021-03-12 00:19:06,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:19:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:19:06,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:06,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:19:06,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:19:06,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269725190] [2021-03-12 00:19:06,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:19:06,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-12 00:19:06,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70009533] [2021-03-12 00:19:06,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-12 00:19:06,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:19:06,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-12 00:19:06,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-12 00:19:06,408 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 36 [2021-03-12 00:19:06,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-03-12 00:19:06,409 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:19:06,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 36 [2021-03-12 00:19:06,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:19:06,421 INFO L129 PetriNetUnfolder]: 2/9 cut-off events. [2021-03-12 00:19:06,422 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-12 00:19:06,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 9 events. 2/9 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 1/10 useless extension candidates. Maximal degree in co-relation 9. Up to 3 conditions per place. [2021-03-12 00:19:06,423 INFO L132 encePairwiseOnDemand]: 34/36 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2021-03-12 00:19:06,423 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 9 transitions, 36 flow [2021-03-12 00:19:06,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 00:19:06,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-12 00:19:06,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2021-03-12 00:19:06,432 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2021-03-12 00:19:06,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 64 transitions. [2021-03-12 00:19:06,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 64 transitions. [2021-03-12 00:19:06,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:19:06,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 64 transitions. [2021-03-12 00:19:06,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2021-03-12 00:19:06,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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) [2021-03-12 00:19:06,440 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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) [2021-03-12 00:19:06,442 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 32 flow. Second operand 3 states and 64 transitions. [2021-03-12 00:19:06,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 9 transitions, 36 flow [2021-03-12 00:19:06,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 9 transitions, 28 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-12 00:19:06,446 INFO L241 Difference]: Finished difference. Result has 12 places, 0 transitions, 0 flow [2021-03-12 00:19:06,447 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=12, PETRI_TRANSITIONS=0} [2021-03-12 00:19:06,448 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, -3 predicate places. [2021-03-12 00:19:06,448 INFO L480 AbstractCegarLoop]: Abstraction has has 12 places, 0 transitions, 0 flow [2021-03-12 00:19:06,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-03-12 00:19:06,449 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-12 00:19:06,451 INFO L202 PluginConnector]: Adding new model misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.03 12:19:06 BasicIcfg [2021-03-12 00:19:06,452 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-12 00:19:06,453 INFO L168 Benchmark]: Toolchain (without parser) took 1046.68 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 236.7 MB in the beginning and 335.1 MB in the end (delta: -98.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.0 GB. [2021-03-12 00:19:06,453 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-12 00:19:06,454 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.15 ms. Allocated memory is still 255.9 MB. Free memory was 236.1 MB in the beginning and 234.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-12 00:19:06,455 INFO L168 Benchmark]: Boogie Preprocessor took 19.28 ms. Allocated memory is still 255.9 MB. Free memory was 234.6 MB in the beginning and 233.7 MB in the end (delta: 947.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-12 00:19:06,455 INFO L168 Benchmark]: RCFGBuilder took 279.48 ms. Allocated memory is still 255.9 MB. Free memory was 233.6 MB in the beginning and 237.6 MB in the end (delta: -4.0 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.0 GB. [2021-03-12 00:19:06,456 INFO L168 Benchmark]: TraceAbstraction took 710.99 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 237.1 MB in the beginning and 335.1 MB in the end (delta: -98.0 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.0 GB. [2021-03-12 00:19:06,459 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 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 27.15 ms. Allocated memory is still 255.9 MB. Free memory was 236.1 MB in the beginning and 234.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.28 ms. Allocated memory is still 255.9 MB. Free memory was 234.6 MB in the beginning and 233.7 MB in the end (delta: 947.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 279.48 ms. Allocated memory is still 255.9 MB. Free memory was 233.6 MB in the beginning and 237.6 MB in the end (delta: -4.0 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 710.99 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 237.1 MB in the beginning and 335.1 MB in the end (delta: -98.0 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 320.2ms, 26 PlacesBefore, 15 PlacesAfterwards, 21 TransitionsBefore, 10 TransitionsAfterwards, 126 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 11 TotalNumberOfCompositions, 98 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 98, positive: 98, positive conditional: 0, positive unconditional: 98, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 79, positive: 79, positive conditional: 0, positive unconditional: 79, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 79, positive: 70, positive conditional: 0, positive unconditional: 70, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 52, positive: 52, positive conditional: 0, positive unconditional: 52, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 98, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 79, unknown conditional: 0, unknown unconditional: 79] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 45]: 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 3 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 579.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 44.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 372.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 2 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.9ms SsaConstructionTime, 13.0ms SatisfiabilityAnalysisTime, 34.9ms InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...