/usr/bin/java -Xmx8000000000 -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/example_interleaving.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 21:49:45,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 21:49:45,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 21:49:45,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-12 21:49:45,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-12 21:49:45,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-12 21:49:45,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-12 21:49:45,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-12 21:49:45,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-12 21:49:45,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-12 21:49:45,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-12 21:49:45,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-12 21:49:45,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-12 21:49:45,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-12 21:49:45,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-12 21:49:45,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-12 21:49:45,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-12 21:49:45,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-12 21:49:45,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-12 21:49:45,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-12 21:49:45,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-12 21:49:45,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-12 21:49:45,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-12 21:49:45,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-12 21:49:45,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-12 21:49:45,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-12 21:49:45,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-12 21:49:45,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-12 21:49:45,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-12 21:49:45,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-12 21:49:45,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-12 21:49:45,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-12 21:49:45,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-12 21:49:45,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-12 21:49:45,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-12 21:49:45,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-12 21:49:45,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-12 21:49:45,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-12 21:49:45,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-12 21:49:45,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-12 21:49:45,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-12 21:49:45,626 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 [2021-08-12 21:49:45,661 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 21:49:45,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 21:49:45,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 21:49:45,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 21:49:45,665 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 21:49:45,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 21:49:45,666 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 21:49:45,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 21:49:45,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 21:49:45,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 21:49:45,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 21:49:45,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 21:49:45,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 21:49:45,667 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 21:49:45,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 21:49:45,668 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 21:49:45,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 21:49:45,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 21:49:45,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 21:49:45,668 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 21:49:45,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 21:49:45,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 21:49:45,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 21:49:45,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 21:49:45,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-12 21:49:45,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 21:49:45,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 21:49:45,669 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 21:49:45,669 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-12 21:49:45,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 21:49:45,670 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 21:49:46,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 21:49:46,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 21:49:46,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 21:49:46,034 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-12 21:49:46,035 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-12 21:49:46,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example_interleaving.bpl [2021-08-12 21:49:46,036 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example_interleaving.bpl' [2021-08-12 21:49:46,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 21:49:46,068 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-12 21:49:46,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 21:49:46,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 21:49:46,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 21:49:46,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:49:46" (1/1) ... [2021-08-12 21:49:46,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:49:46" (1/1) ... [2021-08-12 21:49:46,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 21:49:46,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 21:49:46,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 21:49:46,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 21:49:46,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:49:46" (1/1) ... [2021-08-12 21:49:46,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:49:46" (1/1) ... [2021-08-12 21:49:46,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:49:46" (1/1) ... [2021-08-12 21:49:46,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:49:46" (1/1) ... [2021-08-12 21:49:46,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:49:46" (1/1) ... [2021-08-12 21:49:46,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:49:46" (1/1) ... [2021-08-12 21:49:46,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:49:46" (1/1) ... [2021-08-12 21:49:46,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 21:49:46,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 21:49:46,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 21:49:46,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 21:49:46,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:49:46" (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 [2021-08-12 21:49:46,188 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_y given in one single declaration [2021-08-12 21:49:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure set_y [2021-08-12 21:49:46,188 INFO L138 BoogieDeclarations]: Found implementation of procedure set_y [2021-08-12 21:49:46,188 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_z given in one single declaration [2021-08-12 21:49:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure set_z [2021-08-12 21:49:46,188 INFO L138 BoogieDeclarations]: Found implementation of procedure set_z [2021-08-12 21:49:46,189 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-12 21:49:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 21:49:46,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 21:49:46,189 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_x given in one single declaration [2021-08-12 21:49:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure set_x [2021-08-12 21:49:46,189 INFO L138 BoogieDeclarations]: Found implementation of procedure set_x [2021-08-12 21:49:46,190 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-12 21:49:46,321 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 21:49:46,321 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-12 21:49:46,322 INFO L202 PluginConnector]: Adding new model example_interleaving.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 09:49:46 BoogieIcfgContainer [2021-08-12 21:49:46,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 21:49:46,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 21:49:46,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 21:49:46,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 21:49:46,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:49:46" (1/2) ... [2021-08-12 21:49:46,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31aafce8 and model type example_interleaving.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 09:49:46, skipping insertion in model container [2021-08-12 21:49:46,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_interleaving.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 09:49:46" (2/2) ... [2021-08-12 21:49:46,331 INFO L111 eAbstractionObserver]: Analyzing ICFG example_interleaving.bpl [2021-08-12 21:49:46,340 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 21:49:46,341 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-12 21:49:46,344 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 21:49:46,380 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2021-08-12 21:49:46,400 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-12 21:49:46,419 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 21:49:46,419 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-12 21:49:46,419 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 21:49:46,419 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 21:49:46,419 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 21:49:46,419 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 21:49:46,419 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 21:49:46,420 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 21:49:46,428 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 90 flow [2021-08-12 21:49:46,448 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2021-08-12 21:49:46,448 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-08-12 21:49:46,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 24 events. 5/24 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 31 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 20. Up to 6 conditions per place. [2021-08-12 21:49:46,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 90 flow [2021-08-12 21:49:46,455 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 19 transitions, 74 flow [2021-08-12 21:49:46,478 INFO L129 PetriNetUnfolder]: 5/21 cut-off events. [2021-08-12 21:49:46,479 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-08-12 21:49:46,479 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:49:46,479 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:49:46,480 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:49:46,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:49:46,484 INFO L82 PathProgramCache]: Analyzing trace with hash 621310348, now seen corresponding path program 1 times [2021-08-12 21:49:46,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:49:46,492 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440419793] [2021-08-12 21:49:46,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:49:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:49:46,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:49:46,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:49:46,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:49:46,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:49:46,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:49:46,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:49:46,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:49:46,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:49:46,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440419793] [2021-08-12 21:49:46,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440419793] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:49:46,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:49:46,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 21:49:46,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973717176] [2021-08-12 21:49:46,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 21:49:46,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:49:46,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 21:49:46,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 21:49:46,643 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 24 [2021-08-12 21:49:46,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:49:46,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:49:46,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 24 [2021-08-12 21:49:46,647 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:49:46,662 INFO L129 PetriNetUnfolder]: 1/15 cut-off events. [2021-08-12 21:49:46,663 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-08-12 21:49:46,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 15 events. 1/15 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 3/18 useless extension candidates. Maximal degree in co-relation 14. Up to 3 conditions per place. [2021-08-12 21:49:46,664 INFO L132 encePairwiseOnDemand]: 21/24 looper letters, 1 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2021-08-12 21:49:46,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 15 transitions, 58 flow [2021-08-12 21:49:46,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 21:49:46,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 21:49:46,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2021-08-12 21:49:46,680 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2021-08-12 21:49:46,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 64 transitions. [2021-08-12 21:49:46,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 64 transitions. [2021-08-12 21:49:46,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:49:46,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 64 transitions. [2021-08-12 21:49:46,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:49:46,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:49:46,707 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:49:46,708 INFO L348 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2021-08-12 21:49:46,708 INFO L482 AbstractCegarLoop]: Abstraction has has 25 places, 15 transitions, 58 flow [2021-08-12 21:49:46,708 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:49:46,708 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:49:46,708 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:49:46,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 21:49:46,708 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:49:46,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:49:46,709 INFO L82 PathProgramCache]: Analyzing trace with hash -708234032, now seen corresponding path program 1 times [2021-08-12 21:49:46,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:49:46,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112405856] [2021-08-12 21:49:46,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:49:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:49:46,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:49:46,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:49:46,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:49:46,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:49:46,792 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-12 21:49:46,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-12 21:49:46,833 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-08-12 21:49:46,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-12 21:49:46,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:49:46,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:49:46,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112405856] [2021-08-12 21:49:46,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112405856] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:49:46,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:49:46,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 21:49:46,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270384874] [2021-08-12 21:49:46,858 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 21:49:46,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:49:46,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 21:49:46,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-12 21:49:46,860 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 24 [2021-08-12 21:49:46,861 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 15 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-08-12 21:49:46,861 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:49:46,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 24 [2021-08-12 21:49:46,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:49:46,918 INFO L129 PetriNetUnfolder]: 6/43 cut-off events. [2021-08-12 21:49:46,919 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-08-12 21:49:46,919 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 43 events. 6/43 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 142 event pairs, 1 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 60. Up to 7 conditions per place. [2021-08-12 21:49:46,920 INFO L132 encePairwiseOnDemand]: 20/24 looper letters, 5 selfloop transitions, 2 changer transitions 1/19 dead transitions. [2021-08-12 21:49:46,920 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 82 flow [2021-08-12 21:49:46,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 21:49:46,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 21:49:46,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2021-08-12 21:49:46,924 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2021-08-12 21:49:46,924 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 104 transitions. [2021-08-12 21:49:46,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 104 transitions. [2021-08-12 21:49:46,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:49:46,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 104 transitions. [2021-08-12 21:49:46,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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) [2021-08-12 21:49:46,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:49:46,930 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:49:46,931 INFO L348 CegarLoopForPetriNet]: 23 programPoint places, 6 predicate places. [2021-08-12 21:49:46,931 INFO L482 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 82 flow [2021-08-12 21:49:46,931 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-08-12 21:49:46,932 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:49:46,932 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:49:46,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-12 21:49:46,934 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:49:46,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:49:46,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1242888202, now seen corresponding path program 2 times [2021-08-12 21:49:46,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:49:46,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724544854] [2021-08-12 21:49:46,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:49:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:49:46,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:49:46,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:49:46,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:49:46,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:49:46,990 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-12 21:49:46,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-12 21:49:47,003 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-08-12 21:49:47,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-12 21:49:47,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:49:47,016 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:49:47,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724544854] [2021-08-12 21:49:47,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724544854] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:49:47,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:49:47,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 21:49:47,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211068035] [2021-08-12 21:49:47,017 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 21:49:47,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:49:47,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 21:49:47,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-12 21:49:47,019 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 24 [2021-08-12 21:49:47,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-08-12 21:49:47,020 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:49:47,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 24 [2021-08-12 21:49:47,020 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:49:47,057 INFO L129 PetriNetUnfolder]: 6/56 cut-off events. [2021-08-12 21:49:47,058 INFO L130 PetriNetUnfolder]: For 43/47 co-relation queries the response was YES. [2021-08-12 21:49:47,058 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 56 events. 6/56 cut-off events. For 43/47 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 246 event pairs, 0 based on Foata normal form. 1/55 useless extension candidates. Maximal degree in co-relation 91. Up to 10 conditions per place. [2021-08-12 21:49:47,059 INFO L132 encePairwiseOnDemand]: 20/24 looper letters, 7 selfloop transitions, 3 changer transitions 3/24 dead transitions. [2021-08-12 21:49:47,059 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 128 flow [2021-08-12 21:49:47,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 21:49:47,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 21:49:47,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2021-08-12 21:49:47,060 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2021-08-12 21:49:47,060 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 104 transitions. [2021-08-12 21:49:47,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 104 transitions. [2021-08-12 21:49:47,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:49:47,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 104 transitions. [2021-08-12 21:49:47,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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) [2021-08-12 21:49:47,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:49:47,063 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:49:47,063 INFO L348 CegarLoopForPetriNet]: 23 programPoint places, 10 predicate places. [2021-08-12 21:49:47,063 INFO L482 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 128 flow [2021-08-12 21:49:47,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-08-12 21:49:47,063 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:49:47,064 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:49:47,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-12 21:49:47,064 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:49:47,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:49:47,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1262874350, now seen corresponding path program 3 times [2021-08-12 21:49:47,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:49:47,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140395427] [2021-08-12 21:49:47,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:49:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:49:47,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:49:47,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:49:47,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:49:47,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:49:47,116 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-12 21:49:47,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-12 21:49:47,132 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-08-12 21:49:47,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-12 21:49:47,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:49:47,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:49:47,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140395427] [2021-08-12 21:49:47,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140395427] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:49:47,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:49:47,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 21:49:47,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214907727] [2021-08-12 21:49:47,147 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 21:49:47,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:49:47,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 21:49:47,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-12 21:49:47,153 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 24 [2021-08-12 21:49:47,154 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-08-12 21:49:47,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:49:47,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 24 [2021-08-12 21:49:47,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:49:47,218 INFO L129 PetriNetUnfolder]: 6/55 cut-off events. [2021-08-12 21:49:47,218 INFO L130 PetriNetUnfolder]: For 61/77 co-relation queries the response was YES. [2021-08-12 21:49:47,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 55 events. 6/55 cut-off events. For 61/77 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 231 event pairs, 0 based on Foata normal form. 2/57 useless extension candidates. Maximal degree in co-relation 105. Up to 10 conditions per place. [2021-08-12 21:49:47,220 INFO L132 encePairwiseOnDemand]: 20/24 looper letters, 6 selfloop transitions, 4 changer transitions 6/27 dead transitions. [2021-08-12 21:49:47,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 178 flow [2021-08-12 21:49:47,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 21:49:47,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 21:49:47,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2021-08-12 21:49:47,224 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2021-08-12 21:49:47,224 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 104 transitions. [2021-08-12 21:49:47,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 104 transitions. [2021-08-12 21:49:47,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:49:47,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 104 transitions. [2021-08-12 21:49:47,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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) [2021-08-12 21:49:47,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:49:47,230 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:49:47,231 INFO L348 CegarLoopForPetriNet]: 23 programPoint places, 14 predicate places. [2021-08-12 21:49:47,231 INFO L482 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 178 flow [2021-08-12 21:49:47,231 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-08-12 21:49:47,232 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:49:47,232 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:49:47,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-12 21:49:47,233 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:49:47,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:49:47,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1324503762, now seen corresponding path program 4 times [2021-08-12 21:49:47,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:49:47,236 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389420215] [2021-08-12 21:49:47,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:49:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:49:47,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:49:47,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:49:47,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:49:47,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:49:47,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:49:47,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 21:49:47,313 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-08-12 21:49:47,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-12 21:49:47,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:49:47,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:49:47,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389420215] [2021-08-12 21:49:47,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389420215] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:49:47,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:49:47,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 21:49:47,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302373467] [2021-08-12 21:49:47,332 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 21:49:47,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:49:47,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 21:49:47,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-12 21:49:47,336 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 24 [2021-08-12 21:49:47,336 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-08-12 21:49:47,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:49:47,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 24 [2021-08-12 21:49:47,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:49:47,403 INFO L129 PetriNetUnfolder]: 6/63 cut-off events. [2021-08-12 21:49:47,403 INFO L130 PetriNetUnfolder]: For 89/101 co-relation queries the response was YES. [2021-08-12 21:49:47,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 63 events. 6/63 cut-off events. For 89/101 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 297 event pairs, 0 based on Foata normal form. 5/68 useless extension candidates. Maximal degree in co-relation 134. Up to 12 conditions per place. [2021-08-12 21:49:47,405 INFO L132 encePairwiseOnDemand]: 20/24 looper letters, 6 selfloop transitions, 2 changer transitions 9/28 dead transitions. [2021-08-12 21:49:47,405 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 28 transitions, 220 flow [2021-08-12 21:49:47,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 21:49:47,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 21:49:47,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2021-08-12 21:49:47,408 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8583333333333333 [2021-08-12 21:49:47,408 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 103 transitions. [2021-08-12 21:49:47,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 103 transitions. [2021-08-12 21:49:47,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:49:47,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 103 transitions. [2021-08-12 21:49:47,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2021-08-12 21:49:47,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:49:47,410 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:49:47,411 INFO L348 CegarLoopForPetriNet]: 23 programPoint places, 18 predicate places. [2021-08-12 21:49:47,411 INFO L482 AbstractCegarLoop]: Abstraction has has 41 places, 28 transitions, 220 flow [2021-08-12 21:49:47,411 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-08-12 21:49:47,411 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:49:47,411 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:49:47,411 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-12 21:49:47,411 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:49:47,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:49:47,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1683327648, now seen corresponding path program 5 times [2021-08-12 21:49:47,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:49:47,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889121334] [2021-08-12 21:49:47,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:49:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:49:47,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:49:47,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:49:47,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:49:47,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:49:47,471 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-12 21:49:47,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-12 21:49:47,487 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-08-12 21:49:47,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-12 21:49:47,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:49:47,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:49:47,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889121334] [2021-08-12 21:49:47,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889121334] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:49:47,500 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:49:47,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 21:49:47,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094811551] [2021-08-12 21:49:47,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 21:49:47,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:49:47,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 21:49:47,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-12 21:49:47,503 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 24 [2021-08-12 21:49:47,504 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 28 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-08-12 21:49:47,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:49:47,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 24 [2021-08-12 21:49:47,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:49:47,547 INFO L129 PetriNetUnfolder]: 6/62 cut-off events. [2021-08-12 21:49:47,547 INFO L130 PetriNetUnfolder]: For 127/158 co-relation queries the response was YES. [2021-08-12 21:49:47,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 62 events. 6/62 cut-off events. For 127/158 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 289 event pairs, 0 based on Foata normal form. 4/66 useless extension candidates. Maximal degree in co-relation 149. Up to 12 conditions per place. [2021-08-12 21:49:47,548 INFO L132 encePairwiseOnDemand]: 20/24 looper letters, 3 selfloop transitions, 1 changer transitions 12/27 dead transitions. [2021-08-12 21:49:47,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 27 transitions, 242 flow [2021-08-12 21:49:47,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 21:49:47,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 21:49:47,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2021-08-12 21:49:47,550 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8583333333333333 [2021-08-12 21:49:47,550 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 103 transitions. [2021-08-12 21:49:47,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 103 transitions. [2021-08-12 21:49:47,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:49:47,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 103 transitions. [2021-08-12 21:49:47,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2021-08-12 21:49:47,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:49:47,552 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:49:47,552 INFO L348 CegarLoopForPetriNet]: 23 programPoint places, 22 predicate places. [2021-08-12 21:49:47,552 INFO L482 AbstractCegarLoop]: Abstraction has has 45 places, 27 transitions, 242 flow [2021-08-12 21:49:47,553 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-08-12 21:49:47,553 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:49:47,553 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:49:47,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-12 21:49:47,553 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:49:47,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:49:47,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1447175342, now seen corresponding path program 6 times [2021-08-12 21:49:47,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:49:47,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360103212] [2021-08-12 21:49:47,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:49:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:49:47,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:49:47,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:49:47,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:49:47,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:49:47,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:49:47,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 21:49:47,617 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-08-12 21:49:47,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-12 21:49:47,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:49:47,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:49:47,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360103212] [2021-08-12 21:49:47,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360103212] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:49:47,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:49:47,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 21:49:47,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534919315] [2021-08-12 21:49:47,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 21:49:47,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:49:47,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 21:49:47,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-12 21:49:47,636 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 24 [2021-08-12 21:49:47,636 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 27 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-08-12 21:49:47,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:49:47,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 24 [2021-08-12 21:49:47,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:49:47,676 INFO L129 PetriNetUnfolder]: 6/61 cut-off events. [2021-08-12 21:49:47,676 INFO L130 PetriNetUnfolder]: For 135/155 co-relation queries the response was YES. [2021-08-12 21:49:47,678 INFO L84 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 61 events. 6/61 cut-off events. For 135/155 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 294 event pairs, 0 based on Foata normal form. 1/62 useless extension candidates. Maximal degree in co-relation 164. Up to 12 conditions per place. [2021-08-12 21:49:47,679 INFO L132 encePairwiseOnDemand]: 20/24 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2021-08-12 21:49:47,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 26 transitions, 260 flow [2021-08-12 21:49:47,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 21:49:47,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 21:49:47,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2021-08-12 21:49:47,680 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.85 [2021-08-12 21:49:47,680 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 102 transitions. [2021-08-12 21:49:47,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 102 transitions. [2021-08-12 21:49:47,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:49:47,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 102 transitions. [2021-08-12 21:49:47,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-08-12 21:49:47,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:49:47,681 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:49:47,683 INFO L348 CegarLoopForPetriNet]: 23 programPoint places, 25 predicate places. [2021-08-12 21:49:47,683 INFO L482 AbstractCegarLoop]: Abstraction has has 48 places, 26 transitions, 260 flow [2021-08-12 21:49:47,683 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-08-12 21:49:47,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-12 21:49:47,756 INFO L742 CegarLoopForPetriNet]: Computed Owicki-Gries annotation of size 7292 in 67132408ns [2021-08-12 21:49:47,759 INFO L113 kiGriesValidityCheck]: 8#(or (and v_np18_1 (not v_np16_1) (not v_np15_1) (not v_np17_1) (or (and (<= y 0) (<= z 0) (<= 3 set_zThread1of1ForFork2_thidvar0) (<= 0 z) (<= y z) (<= 0 y) (< z (+ y 1))) (and (<= y 0) (<= z 0) (<= 3 set_zThread1of1ForFork2_thidvar0) (<= z y) (< y (+ z 1)) (<= 0 z) (<= 0 y))) (not v_np21_1) (not v_np5_1) (not v_np19_1) v_np2_1 (not v_np3_1) v_np4_1 (not v_np9_1) (not v_np8_1) v_np7_1 v_np22_1 (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np12_1) (not v_np13_1) v_np0_1 v_np20_1 (not v_np10_1)) (and (not v_np16_1) (not v_np15_1) (not v_np21_1) v_np17_1 (not v_np18_1) (not v_np5_1) (not v_np19_1) v_np2_1 v_np3_1 (not v_np9_1) (or (and (<= x 0) (<= y 0) (<= y x) (<= z 0) (<= 3 set_zThread1of1ForFork2_thidvar0) (< x (+ y 1)) (<= z y) (< y (+ z 1)) (<= 0 z) (<= 0 y) (<= 0 x)) (and (<= x 0) (<= y 0) (<= y x) (<= z 0) (<= 3 set_zThread1of1ForFork2_thidvar0) (< x (+ y 1)) (<= 0 z) (<= y z) (<= 0 x) (<= 0 y) (< z (+ y 1)))) (not v_np8_1) v_np7_1 (not v_np0_1) v_np22_1 (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) v_np20_1 (not v_np10_1)) (and v_np18_1 (not v_np16_1) (not v_np15_1) v_np14_1 (not v_np17_1) (not v_np21_1) (not v_np5_1) (not v_np19_1) v_np2_1 (not v_np3_1) (not v_np9_1) (or (and (<= x 0) (<= y 0) (<= y x) (<= z 0) (<= 3 set_zThread1of1ForFork2_thidvar0) (< x (+ y 1)) (<= z y) (< y (+ z 1)) (<= 0 z) (<= 0 y) (<= 0 x)) (and (<= x 0) (<= y 0) (<= y x) (<= z 0) (<= 3 set_zThread1of1ForFork2_thidvar0) (< x (+ y 1)) (<= 0 z) (<= y z) (<= 0 x) (<= 0 y) (< z (+ y 1)))) (not v_np8_1) v_np7_1 v_np22_1 (not v_np1_1) (not v_np11_1) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) v_np0_1 v_np20_1 (not v_np10_1)) (and (<= 3 set_zThread1of1ForFork2_thidvar0) (<= z y) (< y (+ z 1)) (<= 0 z) (not v_np5_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) v_np10_1 (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np12_1) (not v_np13_1) v_np18_1 (not v_np16_1) (not v_np15_1) (<= y 0) (not v_np2_1) (<= z 0) (not v_np17_1) (not v_np21_1) (not v_np19_1) v_np4_1 v_np7_1 (<= 0 y) v_np22_1 v_np0_1 v_np20_1) (and (<= 3 set_zThread1of1ForFork2_thidvar0) (<= 0 z) (not v_np5_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) (not v_np14_1) v_np13_1 (not v_np6_1) (not v_np12_1) (not v_np10_1) v_np18_1 (not v_np16_1) (not v_np15_1) (not v_np2_1) (<= z 0) (not v_np17_1) (not v_np21_1) (not v_np19_1) v_np4_1 v_np7_1 v_np22_1 v_np0_1 v_np20_1) (and (not v_np16_1) v_np19_1 (not v_np15_1) (not v_np2_1) (not v_np20_1) (not v_np21_1) v_np17_1 (not v_np18_1) (not v_np3_1) (not v_np9_1) v_np5_1 (not v_np8_1) v_np7_1 (not v_np0_1) v_np22_1 (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (or (and (<= y 0) (<= z 0) (<= 3 set_zThread1of1ForFork2_thidvar0) (<= z y) (< y (+ z 1)) (<= 0 z) (<= 0 x) (<= 0 y) (<= x y) (< y (+ x 1))) (and (<= x 0) (<= y 0) (<= y x) (<= z 0) (<= 3 set_zThread1of1ForFork2_thidvar0) (< x (+ y 1)) (<= z y) (< y (+ z 1)) (<= 0 z) (<= 0 x) (<= 0 y)) (and (<= x 0) (<= y 0) (<= z 0) (<= 3 set_zThread1of1ForFork2_thidvar0) (<= z y) (< y (+ z 1)) (<= 0 x) (<= 0 y) (<= x y) (< y (+ x 1))) (and (<= x 0) (<= y 0) (<= y x) (<= z 0) (<= 3 set_zThread1of1ForFork2_thidvar0) (< x (+ y 1)) (<= 0 z) (<= y z) (<= 0 x) (<= 0 y) (< z (+ y 1))))) (and (<= 3 set_zThread1of1ForFork2_thidvar0) (<= 0 z) (not v_np5_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) v_np13_1 (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np10_1) v_np18_1 (not v_np16_1) (<= x 0) (not v_np15_1) (not v_np2_1) (<= z 0) v_np14_1 (not v_np17_1) (not v_np21_1) (<= 0 x) (not v_np19_1) v_np7_1 v_np22_1 v_np0_1 v_np20_1) (and v_np18_1 (not v_np16_1) (not v_np15_1) (not v_np17_1) (not v_np21_1) (or (and (<= y 0) (<= z 0) (<= 3 set_zThread1of1ForFork2_thidvar0) (<= z y) (< y (+ z 1)) (<= 0 z) (<= 0 x) (<= 0 y) (<= x y) (< y (+ x 1))) (and (<= x 0) (<= y 0) (<= y x) (<= z 0) (<= 3 set_zThread1of1ForFork2_thidvar0) (< x (+ y 1)) (<= 0 z) (<= y z) (<= 0 y) (<= 0 x) (< z (+ y 1))) (and (<= x 0) (<= y 0) (<= y x) (<= z 0) (<= 3 set_zThread1of1ForFork2_thidvar0) (< x (+ y 1)) (<= z y) (< y (+ z 1)) (<= 0 z) (<= 0 y) (<= 0 x)) (and (<= x 0) (<= y 0) (<= z 0) (<= 3 set_zThread1of1ForFork2_thidvar0) (<= 0 z) (<= y z) (<= 0 y) (<= 0 x) (<= x y) (< z (+ y 1)) (< y (+ x 1))) (and (<= x 0) (<= y 0) (<= z 0) (<= 3 set_zThread1of1ForFork2_thidvar0) (<= z y) (< y (+ z 1)) (<= 0 x) (<= 0 y) (<= x y) (< y (+ x 1))) (and (<= x 0) (<= y 0) (<= y x) (<= z 0) (<= 3 set_zThread1of1ForFork2_thidvar0) (< x (+ y 1)) (<= 0 z) (<= y z) (<= 0 x) (<= 0 y) (< z (+ y 1)))) (not v_np5_1) (not v_np19_1) v_np2_1 (not v_np3_1) (not v_np9_1) (not v_np8_1) v_np7_1 v_np11_1 v_np22_1 (not v_np1_1) (not v_np14_1) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) v_np0_1 v_np20_1 (not v_np10_1)) (and (<= 3 set_zThread1of1ForFork2_thidvar0) (<= 0 z) (not v_np5_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) v_np11_1 (not v_np1_1) (not v_np14_1) v_np13_1 (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np10_1) v_np18_1 (not v_np16_1) (<= x 0) (not v_np15_1) (not v_np2_1) (<= z 0) (not v_np17_1) (not v_np21_1) (<= 0 x) (not v_np19_1) v_np7_1 v_np22_1 v_np0_1 v_np20_1) (and (<= 3 set_zThread1of1ForFork2_thidvar0) (<= 0 z) (not v_np5_1) (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) (not v_np14_1) v_np13_1 (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np10_1) (not v_np16_1) (<= x 0) (not v_np15_1) (not v_np2_1) (<= z 0) (not v_np21_1) v_np17_1 (not v_np18_1) (<= 0 x) (not v_np19_1) v_np3_1 v_np7_1 (not v_np0_1) v_np22_1 v_np20_1) (and v_np18_1 (not v_np16_1) v_np19_1 (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np20_1) (not v_np21_1) (not v_np5_1) v_np3_1 (or (and (<= y 0) (<= z 0) (<= 3 set_zThread1of1ForFork2_thidvar0) (<= z y) (< y (+ z 1)) (<= 0 z) (<= 0 x) (<= 0 y) (<= x y) (< y (+ x 1))) (and (<= x 0) (<= y 0) (<= z 0) (<= 3 set_zThread1of1ForFork2_thidvar0) (<= z y) (< y (+ z 1)) (<= 0 x) (<= 0 y) (<= x y) (< y (+ x 1)))) (not v_np9_1) (not v_np8_1) v_np7_1 (not v_np0_1) v_np11_1 v_np22_1 (not v_np1_1) (not v_np14_1) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1)) (and (not v_np20_1) (<= 3 set_zThread1of1ForFork2_thidvar0) (<= z y) (< y (+ z 1)) (<= 0 z) (not v_np5_1) (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) v_np18_1 (not v_np16_1) v_np19_1 (not v_np15_1) (<= y 0) (not v_np2_1) (<= z 0) (not v_np17_1) (not v_np21_1) v_np3_1 v_np4_1 v_np7_1 (not v_np0_1) (<= 0 y) v_np22_1) (and v_np18_1 (not v_np16_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) (not v_np5_1) (not v_np19_1) (not v_np3_1) (or (and (<= y 0) (<= z 0) (<= 3 set_zThread1of1ForFork2_thidvar0) (<= z y) (< y (+ z 1)) (<= 0 z) (<= 0 x) (<= 0 y) (<= x y) (< y (+ x 1))) (and (<= x 0) (<= y 0) (<= z 0) (<= 3 set_zThread1of1ForFork2_thidvar0) (<= z y) (< y (+ z 1)) (<= 0 x) (<= 0 y) (<= x y) (< y (+ x 1)))) (not v_np9_1) (not v_np8_1) v_np7_1 v_np10_1 v_np11_1 v_np22_1 (not v_np1_1) (not v_np14_1) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) v_np0_1 v_np20_1)) [2021-08-12 21:49:47,782 INFO L748 CegarLoopForPetriNet]: Checked inductivity and non-interference of Owicki-Gries annotation in 31303668ns [2021-08-12 21:49:47,783 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Invalid Owicki-Gries annotation at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.computeOwickiGries(CegarLoopForPetriNet.java:752) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:111) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:230) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:161) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:146) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-08-12 21:49:47,788 INFO L168 Benchmark]: Toolchain (without parser) took 1719.90 ms. Allocated memory is still 202.4 MB. Free memory was 183.5 MB in the beginning and 78.9 MB in the end (delta: 104.6 MB). Peak memory consumption was 104.0 MB. Max. memory is 8.0 GB. [2021-08-12 21:49:47,789 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 202.4 MB. Free memory is still 184.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 21:49:47,792 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.41 ms. Allocated memory is still 202.4 MB. Free memory was 183.4 MB in the beginning and 181.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-12 21:49:47,792 INFO L168 Benchmark]: Boogie Preprocessor took 11.62 ms. Allocated memory is still 202.4 MB. Free memory was 181.9 MB in the beginning and 181.1 MB in the end (delta: 789.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-12 21:49:47,792 INFO L168 Benchmark]: RCFGBuilder took 215.73 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 172.3 MB in the end (delta: 8.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-08-12 21:49:47,795 INFO L168 Benchmark]: TraceAbstraction took 1462.33 ms. Allocated memory is still 202.4 MB. Free memory was 171.7 MB in the beginning and 78.9 MB in the end (delta: 92.8 MB). Peak memory consumption was 92.5 MB. Max. memory is 8.0 GB. [2021-08-12 21:49:47,799 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 0.19 ms. Allocated memory is still 202.4 MB. Free memory is still 184.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 24.41 ms. Allocated memory is still 202.4 MB. Free memory was 183.4 MB in the beginning and 181.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 11.62 ms. Allocated memory is still 202.4 MB. Free memory was 181.9 MB in the beginning and 181.1 MB in the end (delta: 789.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 215.73 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 172.3 MB in the end (delta: 8.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1462.33 ms. Allocated memory is still 202.4 MB. Free memory was 171.7 MB in the beginning and 78.9 MB in the end (delta: 92.8 MB). Peak memory consumption was 92.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Invalid Owicki-Gries annotation de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Invalid Owicki-Gries annotation: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.computeOwickiGries(CegarLoopForPetriNet.java:752) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...