/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-atomic.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 00:09:05,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 00:09:05,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 00:09:05,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-25 00:09:05,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 00:09:05,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 00:09:05,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 00:09:05,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 00:09:05,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 00:09:05,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 00:09:05,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 00:09:05,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 00:09:05,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 00:09:05,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 00:09:05,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 00:09:05,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 00:09:05,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 00:09:05,159 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 [2021-03-25 00:09:05,176 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 00:09:05,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 00:09:05,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 00:09:05,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 00:09:05,177 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 00:09:05,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 00:09:05,177 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 00:09:05,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 00:09:05,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 00:09:05,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 00:09:05,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 00:09:05,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 00:09:05,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 00:09:05,178 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 00:09:05,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 00:09:05,178 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 00:09:05,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 00:09:05,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 00:09:05,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 00:09:05,179 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 00:09:05,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 00:09:05,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 00:09:05,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 00:09:05,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 00:09:05,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 00:09:05,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 00:09:05,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 00:09:05,179 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 00:09:05,179 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 00:09:05,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 00:09:05,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 00:09:05,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 00:09:05,433 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 00:09:05,434 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 00:09:05,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled-atomic.wvr.bpl [2021-03-25 00:09:05,435 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled-atomic.wvr.bpl' [2021-03-25 00:09:05,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 00:09:05,472 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 00:09:05,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 00:09:05,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 00:09:05,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 00:09:05,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:09:05" (1/1) ... [2021-03-25 00:09:05,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:09:05" (1/1) ... [2021-03-25 00:09:05,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 00:09:05,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 00:09:05,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 00:09:05,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 00:09:05,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:09:05" (1/1) ... [2021-03-25 00:09:05,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:09:05" (1/1) ... [2021-03-25 00:09:05,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:09:05" (1/1) ... [2021-03-25 00:09:05,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:09:05" (1/1) ... [2021-03-25 00:09:05,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:09:05" (1/1) ... [2021-03-25 00:09:05,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:09:05" (1/1) ... [2021-03-25 00:09:05,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:09:05" (1/1) ... [2021-03-25 00:09:05,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 00:09:05,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 00:09:05,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 00:09:05,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 00:09:05,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:09:05" (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 [2021-03-25 00:09:05,550 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 00:09:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 00:09:05,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 00:09:05,550 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 00:09:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 00:09:05,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 00:09:05,550 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 00:09:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 00:09:05,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 00:09:05,551 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 00:09:05,716 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 00:09:05,717 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 00:09:05,718 INFO L202 PluginConnector]: Adding new model misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:09:05 BoogieIcfgContainer [2021-03-25 00:09:05,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 00:09:05,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 00:09:05,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 00:09:05,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 00:09:05,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:09:05" (1/2) ... [2021-03-25 00:09:05,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1fd6e7 and model type misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 12:09:05, skipping insertion in model container [2021-03-25 00:09:05,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:09:05" (2/2) ... [2021-03-25 00:09:05,722 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-2-unrolled-atomic.wvr.bpl [2021-03-25 00:09:05,725 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 00:09:05,728 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 00:09:05,728 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 00:09:05,745 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-25 00:09:05,757 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 00:09:05,770 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 00:09:05,771 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 00:09:05,771 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 00:09:05,771 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 00:09:05,771 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 00:09:05,771 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 00:09:05,771 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 00:09:05,771 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 00:09:05,776 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 19 transitions, 54 flow [2021-03-25 00:09:05,788 INFO L129 PetriNetUnfolder]: 2/17 cut-off events. [2021-03-25 00:09:05,789 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 00:09:05,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 17 events. 2/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2021-03-25 00:09:05,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 19 transitions, 54 flow [2021-03-25 00:09:05,793 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow [2021-03-25 00:09:05,794 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 00:09:05,819 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 15 transitions, 42 flow [2021-03-25 00:09:05,821 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 15 transitions, 42 flow [2021-03-25 00:09:05,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 15 transitions, 42 flow [2021-03-25 00:09:05,826 INFO L129 PetriNetUnfolder]: 2/15 cut-off events. [2021-03-25 00:09:05,826 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 00:09:05,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 15 events. 2/15 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 15 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2021-03-25 00:09:05,827 INFO L142 LiptonReduction]: Number of co-enabled transitions 48 [2021-03-25 00:09:05,949 INFO L154 LiptonReduction]: Checked pairs total: 20 [2021-03-25 00:09:05,949 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 00:09:05,950 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 157 [2021-03-25 00:09:05,956 INFO L129 PetriNetUnfolder]: 2/9 cut-off events. [2021-03-25 00:09:05,956 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 00:09:05,956 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:09:05,957 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:09:05,957 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:09:05,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:09:05,960 INFO L82 PathProgramCache]: Analyzing trace with hash -519619437, now seen corresponding path program 1 times [2021-03-25 00:09:05,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:09:05,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794283635] [2021-03-25 00:09:05,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:09:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:09:06,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:09:06,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:09:06,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:09:06,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794283635] [2021-03-25 00:09:06,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:09:06,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 00:09:06,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456818368] [2021-03-25 00:09:06,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 00:09:06,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:09:06,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 00:09:06,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 00:09:06,052 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 24 [2021-03-25 00:09:06,053 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2021-03-25 00:09:06,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:09:06,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 24 [2021-03-25 00:09:06,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:09:06,063 INFO L129 PetriNetUnfolder]: 2/9 cut-off events. [2021-03-25 00:09:06,063 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 00:09:06,064 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. [2021-03-25 00:09:06,064 INFO L132 encePairwiseOnDemand]: 22/24 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2021-03-25 00:09:06,064 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 9 transitions, 36 flow [2021-03-25 00:09:06,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 00:09:06,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 00:09:06,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2021-03-25 00:09:06,071 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2021-03-25 00:09:06,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 52 transitions. [2021-03-25 00:09:06,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 52 transitions. [2021-03-25 00:09:06,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:09:06,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 52 transitions. [2021-03-25 00:09:06,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2021-03-25 00:09:06,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2021-03-25 00:09:06,077 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2021-03-25 00:09:06,078 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 32 flow. Second operand 3 states and 52 transitions. [2021-03-25 00:09:06,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 9 transitions, 36 flow [2021-03-25 00:09:06,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 9 transitions, 28 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 00:09:06,080 INFO L241 Difference]: Finished difference. Result has 12 places, 0 transitions, 0 flow [2021-03-25 00:09:06,081 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, 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} [2021-03-25 00:09:06,082 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, -3 predicate places. [2021-03-25 00:09:06,082 INFO L480 AbstractCegarLoop]: Abstraction has has 12 places, 0 transitions, 0 flow [2021-03-25 00:09:06,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2021-03-25 00:09:06,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 00:09:06,084 INFO L202 PluginConnector]: Adding new model misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 12:09:06 BasicIcfg [2021-03-25 00:09:06,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 00:09:06,085 INFO L168 Benchmark]: Toolchain (without parser) took 613.47 ms. Allocated memory is still 255.9 MB. Free memory was 236.6 MB in the beginning and 203.1 MB in the end (delta: 33.5 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.0 GB. [2021-03-25 00:09:06,086 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 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. [2021-03-25 00:09:06,086 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.10 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 00:09:06,086 INFO L168 Benchmark]: Boogie Preprocessor took 9.63 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.2 MB in the end (delta: 857.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 00:09:06,087 INFO L168 Benchmark]: RCFGBuilder took 217.05 ms. Allocated memory is still 255.9 MB. Free memory was 234.1 MB in the beginning and 237.6 MB in the end (delta: -3.5 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.0 GB. [2021-03-25 00:09:06,087 INFO L168 Benchmark]: TraceAbstraction took 365.67 ms. Allocated memory is still 255.9 MB. Free memory was 237.1 MB in the beginning and 203.1 MB in the end (delta: 34.0 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.0 GB. [2021-03-25 00:09:06,088 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 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 17.10 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.63 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.2 MB in the end (delta: 857.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 217.05 ms. Allocated memory is still 255.9 MB. Free memory was 234.1 MB in the beginning and 237.6 MB in the end (delta: -3.5 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 365.67 ms. Allocated memory is still 255.9 MB. Free memory was 237.1 MB in the beginning and 203.1 MB in the end (delta: 34.0 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 128.0ms, 20 PlacesBefore, 15 PlacesAfterwards, 15 TransitionsBefore, 10 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 20 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 20, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 20, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 20, positive: 20, positive conditional: 0, positive unconditional: 20, 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: 20, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 20, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 20, unknown conditional: 0, unknown unconditional: 20] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 49]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 314.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 32.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 182.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 2 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms 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: 2.2ms SsaConstructionTime, 9.0ms SatisfiabilityAnalysisTime, 26.0ms 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...