/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/weaver-benchmarks/generated/chl/file-item-subst.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 22:13:14,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 22:13:14,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 22:13:14,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-12 22:13:14,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-12 22:13:14,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-12 22:13:14,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-12 22:13:14,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-12 22:13:14,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-12 22:13:14,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-12 22:13:14,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-12 22:13:14,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-12 22:13:14,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-12 22:13:14,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-12 22:13:14,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-12 22:13:14,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-12 22:13:14,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-12 22:13:14,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-12 22:13:14,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-12 22:13:14,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-12 22:13:14,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-12 22:13:14,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-12 22:13:14,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-12 22:13:14,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-12 22:13:14,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-12 22:13:14,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-12 22:13:14,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-12 22:13:14,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-12 22:13:14,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-12 22:13:14,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-12 22:13:14,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-12 22:13:14,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-12 22:13:14,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-12 22:13:14,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-12 22:13:14,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-12 22:13:14,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-12 22:13:14,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-12 22:13:14,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-12 22:13:14,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-12 22:13:14,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-12 22:13:14,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-12 22:13:14,221 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 22:13:14,235 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 22:13:14,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 22:13:14,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 22:13:14,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 22:13:14,236 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 22:13:14,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 22:13:14,237 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 22:13:14,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 22:13:14,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 22:13:14,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 22:13:14,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 22:13:14,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 22:13:14,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 22:13:14,237 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 22:13:14,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 22:13:14,238 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 22:13:14,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 22:13:14,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 22:13:14,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 22:13:14,238 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 22:13:14,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 22:13:14,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 22:13:14,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 22:13:14,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 22:13:14,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-12 22:13:14,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 22:13:14,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 22:13:14,239 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 22:13:14,239 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-12 22:13:14,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 22:13:14,239 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 22:13:14,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 22:13:14,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 22:13:14,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 22:13:14,448 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-12 22:13:14,448 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-12 22:13:14,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/file-item-subst.wvr.bpl [2021-08-12 22:13:14,449 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/file-item-subst.wvr.bpl' [2021-08-12 22:13:14,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 22:13:14,477 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-12 22:13:14,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 22:13:14,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 22:13:14,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 22:13:14,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:13:14" (1/1) ... [2021-08-12 22:13:14,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:13:14" (1/1) ... [2021-08-12 22:13:14,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 22:13:14,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 22:13:14,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 22:13:14,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 22:13:14,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:13:14" (1/1) ... [2021-08-12 22:13:14,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:13:14" (1/1) ... [2021-08-12 22:13:14,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:13:14" (1/1) ... [2021-08-12 22:13:14,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:13:14" (1/1) ... [2021-08-12 22:13:14,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:13:14" (1/1) ... [2021-08-12 22:13:14,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:13:14" (1/1) ... [2021-08-12 22:13:14,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:13:14" (1/1) ... [2021-08-12 22:13:14,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 22:13:14,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 22:13:14,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 22:13:14,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 22:13:14,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:13:14" (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 22:13:14,578 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-12 22:13:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-12 22:13:14,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-12 22:13:14,580 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-12 22:13:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-12 22:13:14,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-12 22:13:14,581 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-12 22:13:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 22:13:14,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 22:13:14,581 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-12 22:13:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-12 22:13:14,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-12 22:13:14,582 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 22:13:14,704 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 22:13:14,705 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-12 22:13:14,706 INFO L202 PluginConnector]: Adding new model file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 10:13:14 BoogieIcfgContainer [2021-08-12 22:13:14,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 22:13:14,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 22:13:14,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 22:13:14,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 22:13:14,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 10:13:14" (1/2) ... [2021-08-12 22:13:14,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7093b8a2 and model type file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 10:13:14, skipping insertion in model container [2021-08-12 22:13:14,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 10:13:14" (2/2) ... [2021-08-12 22:13:14,710 INFO L111 eAbstractionObserver]: Analyzing ICFG file-item-subst.wvr.bpl [2021-08-12 22:13:14,714 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 22:13:14,714 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-12 22:13:14,715 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 22:13:14,738 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-08-12 22:13:14,753 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-12 22:13:14,783 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 22:13:14,783 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-12 22:13:14,783 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 22:13:14,783 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 22:13:14,783 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 22:13:14,783 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 22:13:14,783 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 22:13:14,783 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 22:13:14,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 62 flow [2021-08-12 22:13:14,803 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-08-12 22:13:14,803 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-08-12 22:13:14,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 16 events. 0/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-08-12 22:13:14,805 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 19 transitions, 62 flow [2021-08-12 22:13:14,807 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 14 transitions, 46 flow [2021-08-12 22:13:14,813 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-08-12 22:13:14,813 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-08-12 22:13:14,814 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:13:14,814 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:13:14,814 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:13:14,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:13:14,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1083414778, now seen corresponding path program 1 times [2021-08-12 22:13:14,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:13:14,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538650718] [2021-08-12 22:13:14,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:13:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:13:15,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:13:15,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:13:15,098 INFO L142 QuantifierPusher]: treesize reduction 142, result has 34.9 percent of original size [2021-08-12 22:13:15,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-08-12 22:13:15,241 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-08-12 22:13:15,260 INFO L142 QuantifierPusher]: treesize reduction 112, result has 45.6 percent of original size [2021-08-12 22:13:15,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-08-12 22:13:15,399 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-08-12 22:13:15,429 INFO L142 QuantifierPusher]: treesize reduction 207, result has 26.9 percent of original size [2021-08-12 22:13:15,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-08-12 22:13:15,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:13:15,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:13:15,476 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 22:13:15,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:13:15,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538650718] [2021-08-12 22:13:15,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538650718] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:13:15,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:13:15,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:13:15,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951090607] [2021-08-12 22:13:15,483 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:13:15,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:13:15,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:13:15,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:13:15,498 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 19 [2021-08-12 22:13:15,500 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 22:13:15,500 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:13:15,500 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 19 [2021-08-12 22:13:15,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:13:15,730 INFO L129 PetriNetUnfolder]: 3/40 cut-off events. [2021-08-12 22:13:15,731 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-08-12 22:13:15,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 40 events. 3/40 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 119 event pairs, 1 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 50. Up to 7 conditions per place. [2021-08-12 22:13:15,733 INFO L132 encePairwiseOnDemand]: 15/19 looper letters, 5 selfloop transitions, 2 changer transitions 1/18 dead transitions. [2021-08-12 22:13:15,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 18 transitions, 70 flow [2021-08-12 22:13:15,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:13:15,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:13:15,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-08-12 22:13:15,742 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8315789473684211 [2021-08-12 22:13:15,742 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-08-12 22:13:15,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-08-12 22:13:15,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:13:15,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-08-12 22:13:15,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 22:13:15,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 22:13:15,751 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 22:13:15,751 INFO L348 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2021-08-12 22:13:15,751 INFO L482 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 70 flow [2021-08-12 22:13:15,751 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 22:13:15,751 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:13:15,752 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:13:15,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 22:13:15,752 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:13:15,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:13:15,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1676293040, now seen corresponding path program 2 times [2021-08-12 22:13:15,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:13:15,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844459420] [2021-08-12 22:13:15,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:13:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:13:15,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:13:15,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:13:15,913 INFO L142 QuantifierPusher]: treesize reduction 278, result has 23.2 percent of original size [2021-08-12 22:13:15,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-08-12 22:13:16,012 INFO L142 QuantifierPusher]: treesize reduction 421, result has 24.3 percent of original size [2021-08-12 22:13:16,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-08-12 22:13:16,124 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2021-08-12 22:13:16,130 INFO L142 QuantifierPusher]: treesize reduction 280, result has 19.3 percent of original size [2021-08-12 22:13:16,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-08-12 22:13:16,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:13:16,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:13:16,190 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 22:13:16,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:13:16,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844459420] [2021-08-12 22:13:16,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844459420] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:13:16,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:13:16,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:13:16,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967370902] [2021-08-12 22:13:16,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:13:16,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:13:16,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:13:16,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:13:16,193 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 19 [2021-08-12 22:13:16,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 22:13:16,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:13:16,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 19 [2021-08-12 22:13:16,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:13:16,322 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-08-12 22:13:16,438 INFO L129 PetriNetUnfolder]: 2/45 cut-off events. [2021-08-12 22:13:16,439 INFO L130 PetriNetUnfolder]: For 21/29 co-relation queries the response was YES. [2021-08-12 22:13:16,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 45 events. 2/45 cut-off events. For 21/29 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 157 event pairs, 0 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 70. Up to 8 conditions per place. [2021-08-12 22:13:16,439 INFO L132 encePairwiseOnDemand]: 15/19 looper letters, 5 selfloop transitions, 3 changer transitions 4/22 dead transitions. [2021-08-12 22:13:16,439 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 110 flow [2021-08-12 22:13:16,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:13:16,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:13:16,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-08-12 22:13:16,441 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8315789473684211 [2021-08-12 22:13:16,441 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-08-12 22:13:16,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-08-12 22:13:16,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:13:16,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-08-12 22:13:16,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 22:13:16,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 22:13:16,442 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 22:13:16,443 INFO L348 CegarLoopForPetriNet]: 24 programPoint places, 8 predicate places. [2021-08-12 22:13:16,443 INFO L482 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 110 flow [2021-08-12 22:13:16,443 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 22:13:16,443 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:13:16,443 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:13:16,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-12 22:13:16,444 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:13:16,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:13:16,444 INFO L82 PathProgramCache]: Analyzing trace with hash 746710662, now seen corresponding path program 3 times [2021-08-12 22:13:16,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:13:16,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696725929] [2021-08-12 22:13:16,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:13:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:13:16,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:13:16,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:13:16,509 INFO L142 QuantifierPusher]: treesize reduction 90, result has 29.1 percent of original size [2021-08-12 22:13:16,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-12 22:13:16,541 INFO L142 QuantifierPusher]: treesize reduction 47, result has 66.7 percent of original size [2021-08-12 22:13:16,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-08-12 22:13:16,636 INFO L142 QuantifierPusher]: treesize reduction 105, result has 34.0 percent of original size [2021-08-12 22:13:16,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-08-12 22:13:16,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:13:16,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:13:16,665 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 22:13:16,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:13:16,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696725929] [2021-08-12 22:13:16,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696725929] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:13:16,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:13:16,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:13:16,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859237443] [2021-08-12 22:13:16,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:13:16,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:13:16,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:13:16,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:13:16,668 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 19 [2021-08-12 22:13:16,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 22:13:16,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:13:16,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 19 [2021-08-12 22:13:16,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:13:16,883 INFO L129 PetriNetUnfolder]: 1/48 cut-off events. [2021-08-12 22:13:16,883 INFO L130 PetriNetUnfolder]: For 38/46 co-relation queries the response was YES. [2021-08-12 22:13:16,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 48 events. 1/48 cut-off events. For 38/46 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 192 event pairs, 0 based on Foata normal form. 1/49 useless extension candidates. Maximal degree in co-relation 87. Up to 8 conditions per place. [2021-08-12 22:13:16,884 INFO L132 encePairwiseOnDemand]: 15/19 looper letters, 7 selfloop transitions, 3 changer transitions 6/26 dead transitions. [2021-08-12 22:13:16,884 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 166 flow [2021-08-12 22:13:16,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:13:16,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:13:16,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-08-12 22:13:16,885 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8315789473684211 [2021-08-12 22:13:16,885 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-08-12 22:13:16,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-08-12 22:13:16,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:13:16,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-08-12 22:13:16,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 22:13:16,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 22:13:16,886 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 22:13:16,887 INFO L348 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2021-08-12 22:13:16,887 INFO L482 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 166 flow [2021-08-12 22:13:16,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 22:13:16,887 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:13:16,888 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:13:16,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-12 22:13:16,888 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:13:16,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:13:16,888 INFO L82 PathProgramCache]: Analyzing trace with hash 180987596, now seen corresponding path program 4 times [2021-08-12 22:13:16,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:13:16,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794947600] [2021-08-12 22:13:16,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:13:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:13:16,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:13:16,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:13:16,938 INFO L142 QuantifierPusher]: treesize reduction 228, result has 21.6 percent of original size [2021-08-12 22:13:16,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-08-12 22:13:16,999 INFO L142 QuantifierPusher]: treesize reduction 86, result has 59.6 percent of original size [2021-08-12 22:13:17,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-08-12 22:13:17,157 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2021-08-12 22:13:17,164 INFO L142 QuantifierPusher]: treesize reduction 165, result has 31.3 percent of original size [2021-08-12 22:13:17,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-08-12 22:13:17,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:13:17,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:13:17,198 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 22:13:17,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:13:17,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794947600] [2021-08-12 22:13:17,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794947600] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:13:17,199 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:13:17,199 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:13:17,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103436598] [2021-08-12 22:13:17,199 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:13:17,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:13:17,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:13:17,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:13:17,204 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 19 [2021-08-12 22:13:17,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 22:13:17,205 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:13:17,205 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 19 [2021-08-12 22:13:17,205 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:13:17,407 INFO L129 PetriNetUnfolder]: 1/46 cut-off events. [2021-08-12 22:13:17,407 INFO L130 PetriNetUnfolder]: For 64/91 co-relation queries the response was YES. [2021-08-12 22:13:17,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 46 events. 1/46 cut-off events. For 64/91 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 178 event pairs, 0 based on Foata normal form. 6/52 useless extension candidates. Maximal degree in co-relation 101. Up to 7 conditions per place. [2021-08-12 22:13:17,408 INFO L132 encePairwiseOnDemand]: 15/19 looper letters, 5 selfloop transitions, 1 changer transitions 9/25 dead transitions. [2021-08-12 22:13:17,408 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 25 transitions, 188 flow [2021-08-12 22:13:17,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:13:17,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:13:17,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2021-08-12 22:13:17,412 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8210526315789474 [2021-08-12 22:13:17,412 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 78 transitions. [2021-08-12 22:13:17,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 78 transitions. [2021-08-12 22:13:17,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:13:17,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 78 transitions. [2021-08-12 22:13:17,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 22:13:17,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 22:13:17,415 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 22:13:17,415 INFO L348 CegarLoopForPetriNet]: 24 programPoint places, 16 predicate places. [2021-08-12 22:13:17,415 INFO L482 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 188 flow [2021-08-12 22:13:17,415 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 22:13:17,415 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:13:17,415 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:13:17,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-12 22:13:17,416 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:13:17,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:13:17,416 INFO L82 PathProgramCache]: Analyzing trace with hash 865899794, now seen corresponding path program 5 times [2021-08-12 22:13:17,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:13:17,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177841492] [2021-08-12 22:13:17,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:13:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:13:17,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:13:17,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:13:17,462 INFO L142 QuantifierPusher]: treesize reduction 150, result has 29.2 percent of original size [2021-08-12 22:13:17,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-08-12 22:13:17,517 INFO L142 QuantifierPusher]: treesize reduction 236, result has 35.0 percent of original size [2021-08-12 22:13:17,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-08-12 22:13:17,615 INFO L142 QuantifierPusher]: treesize reduction 152, result has 38.0 percent of original size [2021-08-12 22:13:17,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-08-12 22:13:17,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:13:17,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:13:17,644 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 22:13:17,644 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:13:17,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177841492] [2021-08-12 22:13:17,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177841492] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:13:17,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:13:17,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:13:17,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542812080] [2021-08-12 22:13:17,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:13:17,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:13:17,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:13:17,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:13:17,646 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 19 [2021-08-12 22:13:17,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 25 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 22:13:17,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:13:17,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 19 [2021-08-12 22:13:17,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:13:17,958 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2021-08-12 22:13:18,332 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2021-08-12 22:13:18,341 INFO L129 PetriNetUnfolder]: 0/52 cut-off events. [2021-08-12 22:13:18,341 INFO L130 PetriNetUnfolder]: For 87/99 co-relation queries the response was YES. [2021-08-12 22:13:18,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 52 events. 0/52 cut-off events. For 87/99 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 237 event pairs, 0 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-08-12 22:13:18,341 INFO L132 encePairwiseOnDemand]: 15/19 looper letters, 3 selfloop transitions, 1 changer transitions 12/26 dead transitions. [2021-08-12 22:13:18,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 26 transitions, 230 flow [2021-08-12 22:13:18,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:13:18,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:13:18,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2021-08-12 22:13:18,343 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8210526315789474 [2021-08-12 22:13:18,343 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 78 transitions. [2021-08-12 22:13:18,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 78 transitions. [2021-08-12 22:13:18,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:13:18,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 78 transitions. [2021-08-12 22:13:18,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 22:13:18,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 22:13:18,344 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 22:13:18,344 INFO L348 CegarLoopForPetriNet]: 24 programPoint places, 20 predicate places. [2021-08-12 22:13:18,344 INFO L482 AbstractCegarLoop]: Abstraction has has 44 places, 26 transitions, 230 flow [2021-08-12 22:13:18,344 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 22:13:18,344 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 22:13:18,344 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 22:13:18,344 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-12 22:13:18,345 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 22:13:18,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 22:13:18,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1296085392, now seen corresponding path program 6 times [2021-08-12 22:13:18,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 22:13:18,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823930291] [2021-08-12 22:13:18,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 22:13:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 22:13:18,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:13:18,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:13:18,376 INFO L142 QuantifierPusher]: treesize reduction 79, result has 53.3 percent of original size [2021-08-12 22:13:18,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-08-12 22:13:18,470 INFO L142 QuantifierPusher]: treesize reduction 133, result has 53.2 percent of original size [2021-08-12 22:13:18,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-08-12 22:13:18,677 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-08-12 22:13:18,682 INFO L142 QuantifierPusher]: treesize reduction 72, result has 59.6 percent of original size [2021-08-12 22:13:18,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-08-12 22:13:18,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 22:13:18,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 22:13:18,731 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 22:13:18,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 22:13:18,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823930291] [2021-08-12 22:13:18,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823930291] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 22:13:18,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 22:13:18,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 22:13:18,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742851720] [2021-08-12 22:13:18,732 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 22:13:18,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 22:13:18,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 22:13:18,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-12 22:13:18,732 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 19 [2021-08-12 22:13:18,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 26 transitions, 230 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 22:13:18,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 22:13:18,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 19 [2021-08-12 22:13:18,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 22:13:18,861 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-08-12 22:13:19,012 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-08-12 22:13:19,015 INFO L129 PetriNetUnfolder]: 0/50 cut-off events. [2021-08-12 22:13:19,016 INFO L130 PetriNetUnfolder]: For 111/131 co-relation queries the response was YES. [2021-08-12 22:13:19,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 50 events. 0/50 cut-off events. For 111/131 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 235 event pairs, 0 based on Foata normal form. 1/51 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-08-12 22:13:19,016 INFO L132 encePairwiseOnDemand]: 15/19 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2021-08-12 22:13:19,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 24 transitions, 246 flow [2021-08-12 22:13:19,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 22:13:19,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 22:13:19,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2021-08-12 22:13:19,016 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8105263157894737 [2021-08-12 22:13:19,017 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 77 transitions. [2021-08-12 22:13:19,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 77 transitions. [2021-08-12 22:13:19,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 22:13:19,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 77 transitions. [2021-08-12 22:13:19,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 22:13:19,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 22:13:19,017 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 22:13:19,018 INFO L348 CegarLoopForPetriNet]: 24 programPoint places, 22 predicate places. [2021-08-12 22:13:19,018 INFO L482 AbstractCegarLoop]: Abstraction has has 46 places, 24 transitions, 246 flow [2021-08-12 22:13:19,018 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 22:13:19,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-12 22:13:19,095 INFO L742 CegarLoopForPetriNet]: Computed Owicki-Gries annotation of size 13520 in 74590611ns [2021-08-12 22:13:19,098 INFO L113 kiGriesValidityCheck]: 7#(or (and (or (and (= result_10 0) (or is_null_3 (and filename_is_null_8 (not is_null_6) filename_is_null_5)) (or is_null_6 (not is_null_3))) (not (= result_9 0)) (and (or (and (= result_10 1) (not is_null_6)) (not is_null_3)) (or is_null_3 (and (or is_null_6 (and (or (and (or (= (+ result_10 1) 0) (not filename_is_null_8)) (or filename_is_null_8 (and (<= (+ result_10 filename_7) filename_4) (<= filename_4 (+ result_10 filename_7))))) filename_is_null_5) (or (not filename_is_null_5) (and (= result_10 1) (not filename_is_null_8))))) (or (= (+ result_10 1) 0) (not is_null_6)))))) (or (= (+ result_9 1) 0) (= result_9 1) (and (or is_null_0 (not is_null_3)) (or is_null_3 (and (or (not filename_is_null_5) filename_is_null_2) (or filename_is_null_5 (and (or (= filename_1 (+ result_9 filename_4)) (= filename_4 filename_1)) (not filename_is_null_2))) (not is_null_0))))) (not v_np5_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (or is_null_0 (and (or (and (or (and filename_is_null_8 (= (+ result_10 1) 0)) (and (= filename_1 (+ result_10 filename_7)) (not filename_is_null_8)) filename_is_null_2) (or (not filename_is_null_2) (and (= result_10 1) (not filename_is_null_8)))) is_null_6 (and filename_is_null_8 (= result_10 0) filename_is_null_2)) (or (= (+ result_10 1) 0) (not is_null_6)))) (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np2_1) (not v_np17_1) v_np15_1 (not v_np21_1) (not v_np18_1) (or is_null_0 (and (or (= (+ result_10 1) 0) (not is_null_6)) (or (and (or filename_is_null_2 (and (or (= (+ result_10 1) 0) (not filename_is_null_8)) (or filename_is_null_8 (= filename_1 (+ result_10 filename_7))))) (or (and filename_is_null_8 (= result_10 0)) (not filename_is_null_2) (and (= result_10 1) (not filename_is_null_8)))) is_null_6))) (not v_np19_1) (or (and (or is_null_3 (not is_null_0)) (or (and (or filename_is_null_2 (and (not filename_is_null_5) (or (= filename_1 (+ result_9 filename_4)) (= filename_4 filename_1)) (not is_null_3))) (or (not filename_is_null_2) (and filename_is_null_5 (not is_null_3)))) is_null_0)) (= (+ result_9 1) 0) (= result_9 1)) v_np6_1 v_np7_1 (not 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filename_is_null_2 (and (not filename_is_null_5) (or (= filename_1 (+ result_9 filename_4)) (= filename_4 filename_1)) (not is_null_3))) (or (not filename_is_null_2) (and filename_is_null_5 (not is_null_3)))) is_null_0)) (= (+ result_9 1) 0) (= result_9 1)) v_np6_1 (not v_np0_1) v_np21_1 v_np23_1 v_np20_1) (and (not v_np23_1) (not v_np5_1) (not v_np7_1) (not v_np3_1) (or (and (or is_null_3 (and (or (not is_null_6) (= (+ result_11 1) 0)) (or is_null_6 (and (or (not filename_is_null_5) (and (or filename_is_null_8 (= result_11 1)) (or (= result_11 0) (not filename_is_null_8)))) (or filename_is_null_5 (and (or filename_is_null_8 (= filename_4 (+ filename_7 result_11))) (or (= (+ result_11 1) 0) (not filename_is_null_8)))))))) (or (and (or is_null_3 (not is_null_0)) (or (and (or filename_is_null_2 (and (not filename_is_null_5) (or (= filename_1 (+ result_9 filename_4)) (= filename_4 filename_1)) (not is_null_3))) (or (not filename_is_null_2) (and filename_is_null_5 (not is_null_3)))) is_null_0)) (= (+ result_9 1) 0) (= result_9 1)) (or (and (or is_null_6 (not is_null_0)) (or is_null_0 (and filename_is_null_8 (not is_null_6))) (or is_null_6 filename_is_null_2) (= result_11 0)) (not (= result_9 0)) (and (or (and (not is_null_6) (= result_11 1)) (not is_null_0)) (or is_null_0 (and (or (and (or filename_is_null_2 (and (or filename_is_null_8 (and (<= filename_1 (+ filename_7 result_11)) (<= (+ filename_7 result_11) filename_1))) (or (= (+ result_11 1) 0) (not filename_is_null_8)))) (or (and (= result_11 1) (not filename_is_null_8)) (not filename_is_null_2))) is_null_6) (or (not is_null_6) (= (+ result_11 1) 0)))))) (or (= (+ result_9 1) 0) (= result_9 1) (and (or is_null_0 (not is_null_3)) (or is_null_3 (and (or (not filename_is_null_5) filename_is_null_2) (or filename_is_null_5 (and (or (= filename_1 (+ result_9 filename_4)) (= filename_4 filename_1)) (not filename_is_null_2))) (not is_null_0))))) (or (and (or (not is_null_6) (and (or is_null_3 (not (= result_11 0))) (or (= result_11 0) (not is_null_3)))) (or is_null_6 (and (or (not filename_is_null_5) (and filename_is_null_8 (= result_11 0))) (or filename_is_null_5 (and (or filename_is_null_8 (= filename_4 (+ filename_7 result_11))) (or (not (= result_11 0)) (and (= filename_4 (+ filename_7 result_11)) (not filename_is_null_8))))) (not is_null_3)))) (= result_11 1)) (or (and (not is_null_6) (or is_null_3 filename_is_null_5 (and (= filename_4 (+ filename_7 result_11)) (not filename_is_null_8))) (or is_null_3 (not filename_is_null_8))) (= (+ result_11 1) 0) (= result_11 0)) (or (and (or (= result_11 1) is_null_6) (or (not is_null_6) (= result_11 0))) (not is_null_3))) (and (or (and (or is_null_3 (not is_null_0)) (or (and (or filename_is_null_2 (and (not filename_is_null_5) (or (= filename_1 (+ result_9 filename_4)) (= filename_4 filename_1)) (not is_null_3))) (or (not filename_is_null_2) (and filename_is_null_5 (not is_null_3)))) is_null_0)) (= (+ result_9 1) 0) (= result_9 1)) (or is_null_3 (and (or (not is_null_6) (= (+ result_11 1) 0)) (or is_null_6 (and (or (not filename_is_null_5) (and (or filename_is_null_8 (= result_11 1)) (or (= result_11 0) (not filename_is_null_8)))) (or filename_is_null_5 (and (or filename_is_null_8 (= filename_4 (+ filename_7 result_11))) (or (= (+ result_11 1) 0) (not filename_is_null_8)))))))) (or (= (+ result_9 1) 0) (= result_9 1) (and (or is_null_0 (not is_null_3)) (or is_null_3 (and (or (not filename_is_null_5) filename_is_null_2) (or filename_is_null_5 (and (or (= filename_1 (+ result_9 filename_4)) (= filename_4 filename_1)) (not filename_is_null_2))) (not is_null_0))))) (or (and (or (not is_null_6) (and (or is_null_3 (not (= result_11 0))) (or (= result_11 0) (not is_null_3)))) (or is_null_6 (and (or (not filename_is_null_5) (and filename_is_null_8 (= result_11 0))) (or filename_is_null_5 (and (or filename_is_null_8 (= filename_4 (+ filename_7 result_11))) (or (not (= result_11 0)) (and (= filename_4 (+ filename_7 result_11)) (not filename_is_null_8))))) (not is_null_3)))) (= result_11 1)) (or (and (not is_null_6) (or is_null_3 filename_is_null_5 (and (= filename_4 (+ filename_7 result_11)) (not filename_is_null_8))) (or is_null_3 (not filename_is_null_8))) (= (+ result_11 1) 0) (= result_11 0)) (or (and (or (= result_11 1) is_null_6) (or (not is_null_6) (= result_11 0))) (not is_null_3)) (or (and (or (not is_null_0) (and (or (= result_11 1) is_null_6) (or (not is_null_6) (= result_11 0)))) (or is_null_0 (and (or (and (not filename_is_null_2) (or (not (= result_9 0)) (and (or filename_is_null_8 (and (<= filename_1 (+ filename_7 result_11)) (<= (+ filename_7 result_11) filename_1))) (or (= (+ result_11 1) 0) (not filename_is_null_8))))) is_null_6 (and (or filename_is_null_8 (= result_11 1)) filename_is_null_2 (or (= result_11 0) (not filename_is_null_8)))) (or (not is_null_6) (= (+ result_11 1) 0))))) (= (+ result_9 1) 0) (= result_9 1)))) (not v_np9_1) (not v_np8_1) v_np11_1 (not v_np1_1) (not v_np14_1) v_np12_1 (not v_np4_1) (not v_np13_1) (not v_np10_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) v_np16_1 (not v_np18_1) (not v_np19_1) v_np6_1 v_np22_1 v_np0_1 v_np20_1)) [2021-08-12 22:13:19,127 INFO L748 CegarLoopForPetriNet]: Checked inductivity and non-interference of Owicki-Gries annotation in 34946812ns [2021-08-12 22:13:19,128 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 22:13:19,131 INFO L168 Benchmark]: Toolchain (without parser) took 4653.53 ms. Allocated memory was 190.8 MB in the beginning and 275.8 MB in the end (delta: 84.9 MB). Free memory was 171.5 MB in the beginning and 250.4 MB in the end (delta: -78.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 8.0 GB. [2021-08-12 22:13:19,131 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 190.8 MB. Free memory is still 172.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 22:13:19,131 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.62 ms. Allocated memory is still 190.8 MB. Free memory was 171.5 MB in the beginning and 170.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-12 22:13:19,132 INFO L168 Benchmark]: Boogie Preprocessor took 16.81 ms. Allocated memory is still 190.8 MB. Free memory was 170.0 MB in the beginning and 169.1 MB in the end (delta: 921.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-12 22:13:19,132 INFO L168 Benchmark]: RCFGBuilder took 190.76 ms. Allocated memory is still 190.8 MB. Free memory was 169.0 MB in the beginning and 158.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-08-12 22:13:19,132 INFO L168 Benchmark]: TraceAbstraction took 4423.19 ms. Allocated memory was 190.8 MB in the beginning and 275.8 MB in the end (delta: 84.9 MB). Free memory was 157.9 MB in the beginning and 250.4 MB in the end (delta: -92.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 22:13:19,133 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 190.8 MB. Free memory is still 172.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 18.62 ms. Allocated memory is still 190.8 MB. Free memory was 171.5 MB in the beginning and 170.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 16.81 ms. Allocated memory is still 190.8 MB. Free memory was 170.0 MB in the beginning and 169.1 MB in the end (delta: 921.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 190.76 ms. Allocated memory is still 190.8 MB. Free memory was 169.0 MB in the beginning and 158.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4423.19 ms. Allocated memory was 190.8 MB in the beginning and 275.8 MB in the end (delta: 84.9 MB). Free memory was 157.9 MB in the beginning and 250.4 MB in the end (delta: -92.5 MB). There was no memory consumed. 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...