/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/SpecificationInliningProblem.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 14:37:22,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 14:37:22,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 14:37:22,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 14:37:22,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 14:37:22,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 14:37:22,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 14:37:22,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 14:37:22,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 14:37:22,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 14:37:22,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 14:37:22,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 14:37:22,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 14:37:22,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 14:37:22,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 14:37:22,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 14:37:22,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 14:37:22,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 14:37:22,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 14:37:22,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 14:37:22,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 14:37:22,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 14:37:22,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 14:37:22,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 14:37:22,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 14:37:22,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 14:37:22,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 14:37:22,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 14:37:22,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 14:37:22,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 14:37:22,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 14:37:22,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 14:37:22,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 14:37:22,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 14:37:22,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 14:37:22,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 14:37:22,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 14:37:22,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 14:37:22,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 14:37:22,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 14:37:22,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 14:37:22,135 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-NoLbe.epf [2021-06-10 14:37:22,150 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 14:37:22,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 14:37:22,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 14:37:22,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 14:37:22,151 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 14:37:22,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 14:37:22,151 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 14:37:22,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 14:37:22,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 14:37:22,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 14:37:22,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 14:37:22,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 14:37:22,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 14:37:22,152 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 14:37:22,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 14:37:22,152 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 14:37:22,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 14:37:22,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 14:37:22,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 14:37:22,152 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 14:37:22,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 14:37:22,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 14:37:22,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 14:37:22,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 14:37:22,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 14:37:22,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 14:37:22,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 14:37:22,153 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 14:37:22,153 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 14:37:22,153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 14:37:22,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 14:37:22,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 14:37:22,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 14:37:22,423 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-10 14:37:22,423 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-10 14:37:22,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/SpecificationInliningProblem.bpl [2021-06-10 14:37:22,424 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/SpecificationInliningProblem.bpl' [2021-06-10 14:37:22,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 14:37:22,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-10 14:37:22,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 14:37:22,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 14:37:22,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 14:37:22,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:37:22" (1/1) ... [2021-06-10 14:37:22,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:37:22" (1/1) ... [2021-06-10 14:37:22,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 14:37:22,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 14:37:22,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 14:37:22,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 14:37:22,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:37:22" (1/1) ... [2021-06-10 14:37:22,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:37:22" (1/1) ... [2021-06-10 14:37:22,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:37:22" (1/1) ... [2021-06-10 14:37:22,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:37:22" (1/1) ... [2021-06-10 14:37:22,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:37:22" (1/1) ... [2021-06-10 14:37:22,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:37:22" (1/1) ... [2021-06-10 14:37:22,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:37:22" (1/1) ... [2021-06-10 14:37:22,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 14:37:22,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 14:37:22,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 14:37:22,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 14:37:22,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:37:22" (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 [2021-06-10 14:37:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2021-06-10 14:37:22,537 INFO L124 BoogieDeclarations]: Specification and implementation of procedure pineappleThread given in one single declaration [2021-06-10 14:37:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure pineappleThread [2021-06-10 14:37:22,537 INFO L138 BoogieDeclarations]: Found implementation of procedure pineappleThread [2021-06-10 14:37:22,538 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-10 14:37:22,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 14:37:22,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 14:37:22,545 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 14:37:22,620 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 14:37:22,620 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-10 14:37:22,621 INFO L202 PluginConnector]: Adding new model SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 02:37:22 BoogieIcfgContainer [2021-06-10 14:37:22,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 14:37:22,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 14:37:22,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 14:37:22,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 14:37:22,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:37:22" (1/2) ... [2021-06-10 14:37:22,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fba632 and model type SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 02:37:22, skipping insertion in model container [2021-06-10 14:37:22,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 02:37:22" (2/2) ... [2021-06-10 14:37:22,626 INFO L111 eAbstractionObserver]: Analyzing ICFG SpecificationInliningProblem.bpl [2021-06-10 14:37:22,630 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 14:37:22,632 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 14:37:22,632 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 14:37:22,645 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 14:37:22,658 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-10 14:37:22,672 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 14:37:22,672 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 14:37:22,672 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 14:37:22,672 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 14:37:22,672 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 14:37:22,672 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 14:37:22,672 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 14:37:22,672 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 14:37:22,678 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 12 places, 8 transitions, 21 flow [2021-06-10 14:37:22,688 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-06-10 14:37:22,688 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 14:37:22,689 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11 conditions, 7 events. 0/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 6 event pairs, 0 based on Foata normal form. 0/6 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-10 14:37:22,689 INFO L82 GeneralOperation]: Start removeDead. Operand has 12 places, 8 transitions, 21 flow [2021-06-10 14:37:22,691 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 9 places, 5 transitions, 13 flow [2021-06-10 14:37:22,693 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-10 14:37:22,693 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 14:37:22,693 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:37:22,693 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2021-06-10 14:37:22,694 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 14:37:22,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:37:22,697 INFO L82 PathProgramCache]: Analyzing trace with hash 38015, now seen corresponding path program 1 times [2021-06-10 14:37:22,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:37:22,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291194249] [2021-06-10 14:37:22,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:37:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:37:22,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:37:22,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 14:37:22,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:37:22,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291194249] [2021-06-10 14:37:22,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:37:22,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 14:37:22,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125415730] [2021-06-10 14:37:22,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:37:22,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:37:22,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:37:22,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:37:22,807 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 8 [2021-06-10 14:37:22,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 9 places, 5 transitions, 13 flow. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-06-10 14:37:22,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:37:22,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 8 [2021-06-10 14:37:22,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:37:22,827 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-06-10 14:37:22,828 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 14:37:22,828 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13 conditions, 5 events. 0/5 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 1/6 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-06-10 14:37:22,828 INFO L132 encePairwiseOnDemand]: 5/8 looper letters, 1 selfloop transitions, 2 changer transitions 0/5 dead transitions. [2021-06-10 14:37:22,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 5 transitions, 19 flow [2021-06-10 14:37:22,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:37:22,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:37:22,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2021-06-10 14:37:22,836 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2021-06-10 14:37:22,836 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 16 transitions. [2021-06-10 14:37:22,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 16 transitions. [2021-06-10 14:37:22,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:37:22,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 16 transitions. [2021-06-10 14:37:22,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-06-10 14:37:22,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2021-06-10 14:37:22,842 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2021-06-10 14:37:22,843 INFO L185 Difference]: Start difference. First operand has 9 places, 5 transitions, 13 flow. Second operand 3 states and 16 transitions. [2021-06-10 14:37:22,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 5 transitions, 19 flow [2021-06-10 14:37:22,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 5 transitions, 18 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:37:22,848 INFO L241 Difference]: Finished difference. Result has 11 places, 5 transitions, 20 flow [2021-06-10 14:37:22,849 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=8, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=20, PETRI_PLACES=11, PETRI_TRANSITIONS=5} [2021-06-10 14:37:22,850 INFO L343 CegarLoopForPetriNet]: 9 programPoint places, 2 predicate places. [2021-06-10 14:37:22,850 INFO L480 AbstractCegarLoop]: Abstraction has has 11 places, 5 transitions, 20 flow [2021-06-10 14:37:22,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-06-10 14:37:22,850 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:37:22,850 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-06-10 14:37:22,851 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 14:37:22,851 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 14:37:22,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:37:22,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1178629, now seen corresponding path program 1 times [2021-06-10 14:37:22,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:37:22,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340802624] [2021-06-10 14:37:22,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:37:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:37:22,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:37:22,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:37:22,915 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-10 14:37:22,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:37:22,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:37:22,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340802624] [2021-06-10 14:37:22,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:37:22,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 14:37:22,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112155594] [2021-06-10 14:37:22,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 14:37:22,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:37:22,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 14:37:22,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 14:37:22,943 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 8 [2021-06-10 14:37:22,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 5 transitions, 20 flow. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-06-10 14:37:22,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:37:22,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 8 [2021-06-10 14:37:22,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:37:22,948 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2021-06-10 14:37:22,948 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-10 14:37:22,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15 conditions, 4 events. 0/4 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/5 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-10 14:37:22,948 INFO L132 encePairwiseOnDemand]: 5/8 looper letters, 0 selfloop transitions, 0 changer transitions 4/4 dead transitions. [2021-06-10 14:37:22,948 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 4 transitions, 20 flow [2021-06-10 14:37:22,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 14:37:22,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 14:37:22,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-06-10 14:37:22,949 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.59375 [2021-06-10 14:37:22,949 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 19 transitions. [2021-06-10 14:37:22,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 19 transitions. [2021-06-10 14:37:22,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:37:22,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 19 transitions. [2021-06-10 14:37:22,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-06-10 14:37:22,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2021-06-10 14:37:22,950 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2021-06-10 14:37:22,951 INFO L185 Difference]: Start difference. First operand has 11 places, 5 transitions, 20 flow. Second operand 4 states and 19 transitions. [2021-06-10 14:37:22,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 4 transitions, 20 flow [2021-06-10 14:37:22,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 4 transitions, 14 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 14:37:22,951 INFO L241 Difference]: Finished difference. Result has 10 places, 0 transitions, 0 flow [2021-06-10 14:37:22,951 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=8, PETRI_DIFFERENCE_MINUEND_FLOW=10, PETRI_DIFFERENCE_MINUEND_PLACES=7, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=10, PETRI_TRANSITIONS=0} [2021-06-10 14:37:22,952 INFO L343 CegarLoopForPetriNet]: 9 programPoint places, 1 predicate places. [2021-06-10 14:37:22,952 INFO L480 AbstractCegarLoop]: Abstraction has has 10 places, 0 transitions, 0 flow [2021-06-10 14:37:22,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-06-10 14:37:22,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 14:37:22,955 INFO L202 PluginConnector]: Adding new model SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 02:37:22 BasicIcfg [2021-06-10 14:37:22,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 14:37:22,956 INFO L168 Benchmark]: Toolchain (without parser) took 503.79 ms. Allocated memory is still 398.5 MB. Free memory was 378.1 MB in the beginning and 367.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.0 GB. [2021-06-10 14:37:22,957 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 398.5 MB. Free memory is still 379.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 14:37:22,957 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.27 ms. Allocated memory is still 398.5 MB. Free memory was 378.0 MB in the beginning and 376.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 14:37:22,958 INFO L168 Benchmark]: Boogie Preprocessor took 10.31 ms. Allocated memory is still 398.5 MB. Free memory was 376.6 MB in the beginning and 375.7 MB in the end (delta: 846.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 14:37:22,958 INFO L168 Benchmark]: RCFGBuilder took 134.53 ms. Allocated memory is still 398.5 MB. Free memory was 375.7 MB in the beginning and 367.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. [2021-06-10 14:37:22,959 INFO L168 Benchmark]: TraceAbstraction took 333.07 ms. Allocated memory is still 398.5 MB. Free memory was 367.2 MB in the beginning and 367.2 MB in the end (delta: 18.2 kB). Peak memory consumption was 328.2 kB. Max. memory is 16.0 GB. [2021-06-10 14:37:22,960 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 0.10 ms. Allocated memory is still 398.5 MB. Free memory is still 379.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.27 ms. Allocated memory is still 398.5 MB. Free memory was 378.0 MB in the beginning and 376.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.31 ms. Allocated memory is still 398.5 MB. Free memory was 376.6 MB in the beginning and 375.7 MB in the end (delta: 846.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 134.53 ms. Allocated memory is still 398.5 MB. Free memory was 375.7 MB in the beginning and 367.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 333.07 ms. Allocated memory is still 398.5 MB. Free memory was 367.2 MB in the beginning and 367.2 MB in the end (delta: 18.2 kB). Peak memory consumption was 328.2 kB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 30]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 283.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 54.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=1, InterpolantAutomatonStates: 7, 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: 2.8ms SsaConstructionTime, 14.4ms SatisfiabilityAnalysisTime, 103.2ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 27 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...