/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/popl20-more/min-le-max.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 02:05:07,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 02:05:07,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 02:05:07,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-25 02:05:07,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 02:05:07,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 02:05:07,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 02:05:07,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 02:05:07,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 02:05:07,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 02:05:07,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 02:05:07,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 02:05:07,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 02:05:07,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 02:05:07,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 02:05:07,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 02:05:07,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 02:05:07,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 02:05:07,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 02:05:07,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 02:05:07,576 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 02:05:07,609 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 02:05:07,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 02:05:07,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 02:05:07,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 02:05:07,613 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 02:05:07,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 02:05:07,613 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 02:05:07,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 02:05:07,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 02:05:07,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 02:05:07,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 02:05:07,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 02:05:07,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 02:05:07,615 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 02:05:07,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 02:05:07,615 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 02:05:07,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 02:05:07,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 02:05:07,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 02:05:07,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 02:05:07,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 02:05:07,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 02:05:07,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 02:05:07,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 02:05:07,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 02:05:07,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 02:05:07,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 02:05:07,617 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 02:05:07,618 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 02:05:07,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 02:05:07,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 02:05:07,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 02:05:07,988 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 02:05:07,989 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 02:05:07,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-le-max.wvr.bpl [2021-03-25 02:05:07,990 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-le-max.wvr.bpl' [2021-03-25 02:05:08,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 02:05:08,136 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 02:05:08,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 02:05:08,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 02:05:08,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 02:05:08,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 02:05:08" (1/1) ... [2021-03-25 02:05:08,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 02:05:08" (1/1) ... [2021-03-25 02:05:08,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 02:05:08,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 02:05:08,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 02:05:08,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 02:05:08,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 02:05:08" (1/1) ... [2021-03-25 02:05:08,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 02:05:08" (1/1) ... [2021-03-25 02:05:08,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 02:05:08" (1/1) ... [2021-03-25 02:05:08,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 02:05:08" (1/1) ... [2021-03-25 02:05:08,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 02:05:08" (1/1) ... [2021-03-25 02:05:08,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 02:05:08" (1/1) ... [2021-03-25 02:05:08,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 02:05:08" (1/1) ... [2021-03-25 02:05:08,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 02:05:08,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 02:05:08,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 02:05:08,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 02:05:08,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 02:05:08" (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 02:05:08,263 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 02:05:08,263 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 02:05:08,263 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 02:05:08,265 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 02:05:08,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 02:05:08,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 02:05:08,265 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 02:05:08,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 02:05:08,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 02:05:08,266 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-25 02:05:08,266 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-25 02:05:08,266 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-25 02:05:08,267 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 02:05:08,452 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 02:05:08,452 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 02:05:08,453 INFO L202 PluginConnector]: Adding new model min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 02:05:08 BoogieIcfgContainer [2021-03-25 02:05:08,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 02:05:08,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 02:05:08,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 02:05:08,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 02:05:08,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 02:05:08" (1/2) ... [2021-03-25 02:05:08,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530ddbe1 and model type min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 02:05:08, skipping insertion in model container [2021-03-25 02:05:08,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 02:05:08" (2/2) ... [2021-03-25 02:05:08,468 INFO L111 eAbstractionObserver]: Analyzing ICFG min-le-max.wvr.bpl [2021-03-25 02:05:08,472 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 02:05:08,476 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 02:05:08,476 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 02:05:08,545 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-25 02:05:08,575 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 02:05:08,608 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 02:05:08,608 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 02:05:08,608 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 02:05:08,608 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 02:05:08,608 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 02:05:08,608 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 02:05:08,609 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 02:05:08,609 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 02:05:08,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 26 transitions, 76 flow [2021-03-25 02:05:08,674 INFO L129 PetriNetUnfolder]: 2/23 cut-off events. [2021-03-25 02:05:08,675 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 02:05:08,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 23 events. 2/23 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 41 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2021-03-25 02:05:08,679 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 26 transitions, 76 flow [2021-03-25 02:05:08,683 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 21 transitions, 60 flow [2021-03-25 02:05:08,685 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 02:05:08,698 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 21 transitions, 60 flow [2021-03-25 02:05:08,706 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 21 transitions, 60 flow [2021-03-25 02:05:08,708 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 21 transitions, 60 flow [2021-03-25 02:05:08,723 INFO L129 PetriNetUnfolder]: 2/21 cut-off events. [2021-03-25 02:05:08,723 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 02:05:08,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 21 events. 2/21 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 36 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2021-03-25 02:05:08,727 INFO L142 LiptonReduction]: Number of co-enabled transitions 138 [2021-03-25 02:05:08,970 INFO L154 LiptonReduction]: Checked pairs total: 90 [2021-03-25 02:05:08,970 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 02:05:08,977 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 293 [2021-03-25 02:05:08,991 INFO L129 PetriNetUnfolder]: 2/12 cut-off events. [2021-03-25 02:05:08,991 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 02:05:08,992 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:05:08,992 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:05:08,992 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:05:08,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:05:08,998 INFO L82 PathProgramCache]: Analyzing trace with hash -93480264, now seen corresponding path program 1 times [2021-03-25 02:05:09,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:05:09,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125969625] [2021-03-25 02:05:09,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:05:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:05:09,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:05:09,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 02:05:09,144 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 02:05:09,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125969625] [2021-03-25 02:05:09,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:05:09,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 02:05:09,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544816499] [2021-03-25 02:05:09,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 02:05:09,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:05:09,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 02:05:09,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 02:05:09,173 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 34 [2021-03-25 02:05:09,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 13 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 02:05:09,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:05:09,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 34 [2021-03-25 02:05:09,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:05:09,225 INFO L129 PetriNetUnfolder]: 11/35 cut-off events. [2021-03-25 02:05:09,225 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-03-25 02:05:09,226 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 35 events. 11/35 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 0 based on Foata normal form. 2/35 useless extension candidates. Maximal degree in co-relation 49. Up to 12 conditions per place. [2021-03-25 02:05:09,228 INFO L132 encePairwiseOnDemand]: 29/34 looper letters, 4 selfloop transitions, 3 changer transitions 5/20 dead transitions. [2021-03-25 02:05:09,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 20 transitions, 82 flow [2021-03-25 02:05:09,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 02:05:09,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 02:05:09,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2021-03-25 02:05:09,239 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7294117647058823 [2021-03-25 02:05:09,240 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 124 transitions. [2021-03-25 02:05:09,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 124 transitions. [2021-03-25 02:05:09,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:05:09,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 124 transitions. [2021-03-25 02:05:09,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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 02:05:09,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 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 02:05:09,253 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 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 02:05:09,255 INFO L185 Difference]: Start difference. First operand has 21 places, 13 transitions, 44 flow. Second operand 5 states and 124 transitions. [2021-03-25 02:05:09,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 20 transitions, 82 flow [2021-03-25 02:05:09,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 20 transitions, 70 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-25 02:05:09,263 INFO L241 Difference]: Finished difference. Result has 22 places, 15 transitions, 59 flow [2021-03-25 02:05:09,264 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=59, PETRI_PLACES=22, PETRI_TRANSITIONS=15} [2021-03-25 02:05:09,265 INFO L343 CegarLoopForPetriNet]: 21 programPoint places, 1 predicate places. [2021-03-25 02:05:09,265 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 59 flow [2021-03-25 02:05:09,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 02:05:09,265 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:05:09,265 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:05:09,266 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 02:05:09,266 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 02:05:09,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:05:09,267 INFO L82 PathProgramCache]: Analyzing trace with hash 810777838, now seen corresponding path program 1 times [2021-03-25 02:05:09,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:05:09,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573685069] [2021-03-25 02:05:09,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:05:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:05:09,354 INFO L142 QuantifierPusher]: treesize reduction 14, result has 77.0 percent of original size [2021-03-25 02:05:09,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-25 02:05:09,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 02:05:09,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:05:09,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573685069] [2021-03-25 02:05:09,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963735146] [2021-03-25 02:05:09,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 02:05:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:05:09,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-03-25 02:05:09,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 02:05:09,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:05:09,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:05:09,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-25 02:05:09,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:05:09,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:05:09,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-25 02:05:09,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:05:09,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 02:05:09,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 02:05:09,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 02:05:09,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 02:05:09,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 02:05:09,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 02:05:09,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 02:05:09,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 02:05:09,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 02:05:09,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:05:09,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 02:05:09,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:05:09,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 02:05:09,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-03-25 02:05:09,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085016163] [2021-03-25 02:05:09,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 02:05:09,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:05:09,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 02:05:09,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-25 02:05:09,526 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2021-03-25 02:05:09,526 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 59 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 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 02:05:09,527 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:05:09,527 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2021-03-25 02:05:09,527 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:05:09,616 INFO L129 PetriNetUnfolder]: 25/57 cut-off events. [2021-03-25 02:05:09,616 INFO L130 PetriNetUnfolder]: For 32/40 co-relation queries the response was YES. [2021-03-25 02:05:09,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 57 events. 25/57 cut-off events. For 32/40 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 152 event pairs, 1 based on Foata normal form. 7/62 useless extension candidates. Maximal degree in co-relation 154. Up to 29 conditions per place. [2021-03-25 02:05:09,617 INFO L132 encePairwiseOnDemand]: 28/34 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2021-03-25 02:05:09,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 27 transitions, 147 flow [2021-03-25 02:05:09,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 02:05:09,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 02:05:09,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2021-03-25 02:05:09,619 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5168067226890757 [2021-03-25 02:05:09,619 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 123 transitions. [2021-03-25 02:05:09,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 123 transitions. [2021-03-25 02:05:09,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:05:09,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 123 transitions. [2021-03-25 02:05:09,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 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 02:05:09,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 34.0) internal successors, (272), 8 states have internal predecessors, (272), 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 02:05:09,621 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 34.0) internal successors, (272), 8 states have internal predecessors, (272), 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 02:05:09,621 INFO L185 Difference]: Start difference. First operand has 22 places, 15 transitions, 59 flow. Second operand 7 states and 123 transitions. [2021-03-25 02:05:09,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 27 transitions, 147 flow [2021-03-25 02:05:09,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 27 transitions, 128 flow, removed 8 selfloop flow, removed 2 redundant places. [2021-03-25 02:05:09,623 INFO L241 Difference]: Finished difference. Result has 23 places, 0 transitions, 0 flow [2021-03-25 02:05:09,623 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=23, PETRI_TRANSITIONS=0} [2021-03-25 02:05:09,624 INFO L343 CegarLoopForPetriNet]: 21 programPoint places, 2 predicate places. [2021-03-25 02:05:09,624 INFO L480 AbstractCegarLoop]: Abstraction has has 23 places, 0 transitions, 0 flow [2021-03-25 02:05:09,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 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 02:05:09,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-03-25 02:05:09,847 INFO L202 PluginConnector]: Adding new model min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 02:05:09 BasicIcfg [2021-03-25 02:05:09,847 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 02:05:09,848 INFO L168 Benchmark]: Toolchain (without parser) took 1712.58 ms. Allocated memory is still 350.2 MB. Free memory was 330.1 MB in the beginning and 239.5 MB in the end (delta: 90.6 MB). Peak memory consumption was 92.6 MB. Max. memory is 16.0 GB. [2021-03-25 02:05:09,848 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 350.2 MB. Free memory was 331.2 MB in the beginning and 331.2 MB in the end (delta: 70.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 02:05:09,849 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.63 ms. Allocated memory is still 350.2 MB. Free memory was 330.0 MB in the beginning and 328.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 02:05:09,849 INFO L168 Benchmark]: Boogie Preprocessor took 16.00 ms. Allocated memory is still 350.2 MB. Free memory was 328.6 MB in the beginning and 327.6 MB in the end (delta: 945.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 02:05:09,850 INFO L168 Benchmark]: RCFGBuilder took 275.53 ms. Allocated memory is still 350.2 MB. Free memory was 327.6 MB in the beginning and 316.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-25 02:05:09,850 INFO L168 Benchmark]: TraceAbstraction took 1392.26 ms. Allocated memory is still 350.2 MB. Free memory was 316.3 MB in the beginning and 239.5 MB in the end (delta: 76.8 MB). Peak memory consumption was 77.9 MB. Max. memory is 16.0 GB. [2021-03-25 02:05:09,852 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 0.12 ms. Allocated memory is still 350.2 MB. Free memory was 331.2 MB in the beginning and 331.2 MB in the end (delta: 70.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.63 ms. Allocated memory is still 350.2 MB. Free memory was 330.0 MB in the beginning and 328.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 16.00 ms. Allocated memory is still 350.2 MB. Free memory was 328.6 MB in the beginning and 327.6 MB in the end (delta: 945.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 275.53 ms. Allocated memory is still 350.2 MB. Free memory was 327.6 MB in the beginning and 316.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1392.26 ms. Allocated memory is still 350.2 MB. Free memory was 316.3 MB in the beginning and 239.5 MB in the end (delta: 76.8 MB). Peak memory consumption was 77.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 264.3ms, 29 PlacesBefore, 21 PlacesAfterwards, 21 TransitionsBefore, 13 TransitionsAfterwards, 138 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 8 TotalNumberOfCompositions, 90 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 77, positive: 74, positive conditional: 0, positive unconditional: 74, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 70, positive: 67, positive conditional: 0, positive unconditional: 67, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 70, positive: 67, positive conditional: 0, positive unconditional: 67, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 70, positive: 67, positive conditional: 0, positive unconditional: 67, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 24, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 77, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 70, unknown conditional: 0, unknown unconditional: 70] , 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: 52]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 6.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1256.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 195.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 376.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 13 SDslu, 3 SDs, 0 SdLazy, 66 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 44.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 89.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=1, InterpolantAutomatonStates: 12, 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: 13.1ms SsaConstructionTime, 47.6ms SatisfiabilityAnalysisTime, 244.7ms InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 118 SizeOfPredicates, 0 NumberOfNonLiveVariables, 44 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 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...