/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-OGIterative-CovSimpl.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/FischerWithBug.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 07:42:39,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 07:42:39,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 07:42:39,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 07:42:39,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 07:42:39,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 07:42:39,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 07:42:39,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 07:42:39,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 07:42:39,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 07:42:39,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 07:42:39,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 07:42:39,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 07:42:39,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 07:42:39,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 07:42:39,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 07:42:39,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 07:42:39,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 07:42:39,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 07:42:39,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 07:42:39,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 07:42:39,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 07:42:39,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 07:42:39,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 07:42:39,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-13 07:42:39,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-13 07:42:39,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-13 07:42:39,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-13 07:42:39,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-13 07:42:39,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-13 07:42:39,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-13 07:42:39,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-13 07:42:39,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-13 07:42:39,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-13 07:42:39,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-13 07:42:39,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-13 07:42:39,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-13 07:42:39,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-13 07:42:39,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 07:42:39,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 07:42:39,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 07:42:39,745 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-OGIterative-CovSimpl.epf [2021-08-13 07:42:39,774 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 07:42:39,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 07:42:39,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 07:42:39,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 07:42:39,778 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 07:42:39,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 07:42:39,778 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 07:42:39,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 07:42:39,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 07:42:39,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 07:42:39,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 07:42:39,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 07:42:39,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 07:42:39,779 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 07:42:39,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 07:42:39,780 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 07:42:39,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 07:42:39,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 07:42:39,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 07:42:39,780 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 07:42:39,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 07:42:39,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 07:42:39,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 07:42:39,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 07:42:39,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 07:42:39,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 07:42:39,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 07:42:39,781 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 07:42:39,781 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 07:42:39,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 07:42:39,781 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 07:42:39,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 07:42:39,781 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 07:42:40,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 07:42:40,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 07:42:40,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 07:42:40,059 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 07:42:40,060 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 07:42:40,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/FischerWithBug.bpl [2021-08-13 07:42:40,061 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/FischerWithBug.bpl' [2021-08-13 07:42:40,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 07:42:40,094 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 07:42:40,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 07:42:40,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 07:42:40,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 07:42:40,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:42:40" (1/1) ... [2021-08-13 07:42:40,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:42:40" (1/1) ... [2021-08-13 07:42:40,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 07:42:40,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 07:42:40,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 07:42:40,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 07:42:40,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:42:40" (1/1) ... [2021-08-13 07:42:40,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:42:40" (1/1) ... [2021-08-13 07:42:40,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:42:40" (1/1) ... [2021-08-13 07:42:40,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:42:40" (1/1) ... [2021-08-13 07:42:40,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:42:40" (1/1) ... [2021-08-13 07:42:40,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:42:40" (1/1) ... [2021-08-13 07:42:40,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:42:40" (1/1) ... [2021-08-13 07:42:40,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 07:42:40,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 07:42:40,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 07:42:40,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 07:42:40,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:42:40" (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 [2021-08-13 07:42:40,223 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process2 given in one single declaration [2021-08-13 07:42:40,224 INFO L130 BoogieDeclarations]: Found specification of procedure Process2 [2021-08-13 07:42:40,224 INFO L138 BoogieDeclarations]: Found implementation of procedure Process2 [2021-08-13 07:42:40,224 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2021-08-13 07:42:40,224 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2021-08-13 07:42:40,224 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2021-08-13 07:42:40,224 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 07:42:40,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 07:42:40,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 07:42:40,225 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Clock given in one single declaration [2021-08-13 07:42:40,225 INFO L130 BoogieDeclarations]: Found specification of procedure Clock [2021-08-13 07:42:40,225 INFO L138 BoogieDeclarations]: Found implementation of procedure Clock [2021-08-13 07:42:40,225 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 07:42:40,362 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 07:42:40,362 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-08-13 07:42:40,363 INFO L202 PluginConnector]: Adding new model FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 07:42:40 BoogieIcfgContainer [2021-08-13 07:42:40,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 07:42:40,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 07:42:40,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 07:42:40,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 07:42:40,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:42:40" (1/2) ... [2021-08-13 07:42:40,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad0b74e and model type FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 07:42:40, skipping insertion in model container [2021-08-13 07:42:40,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 07:42:40" (2/2) ... [2021-08-13 07:42:40,368 INFO L111 eAbstractionObserver]: Analyzing ICFG FischerWithBug.bpl [2021-08-13 07:42:40,371 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 07:42:40,371 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-13 07:42:40,372 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 07:42:40,388 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:42:40,388 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:42:40,389 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:42:40,389 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:42:40,389 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:42:40,390 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:42:40,390 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:42:40,390 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:42:40,391 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:42:40,391 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:42:40,392 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:42:40,392 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:42:40,392 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:42:40,392 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:42:40,393 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:42:40,393 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:42:40,396 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:42:40,398 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:42:40,399 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 07:42:40,413 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-13 07:42:40,426 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 07:42:40,426 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 07:42:40,426 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 07:42:40,426 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 07:42:40,426 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 07:42:40,426 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 07:42:40,426 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 07:42:40,426 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 07:42:40,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 46 transitions, 107 flow [2021-08-13 07:42:40,452 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-08-13 07:42:40,452 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:42:40,455 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 5/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 109 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-08-13 07:42:40,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 46 transitions, 107 flow [2021-08-13 07:42:40,458 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 43 transitions, 95 flow [2021-08-13 07:42:40,464 INFO L129 PetriNetUnfolder]: 1/18 cut-off events. [2021-08-13 07:42:40,464 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:42:40,464 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:42:40,465 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:42:40,465 INFO L430 AbstractCegarLoop]: === Iteration 1 === [Process2Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:42:40,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:42:40,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1128325677, now seen corresponding path program 1 times [2021-08-13 07:42:40,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:42:40,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844027357] [2021-08-13 07:42:40,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:42:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:42:40,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:40,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 07:42:40,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:42:40,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:42:40,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844027357] [2021-08-13 07:42:40,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844027357] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:42:40,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:42:40,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-13 07:42:40,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731151623] [2021-08-13 07:42:40,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 07:42:40,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:42:40,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 07:42:40,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 07:42:40,579 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 46 [2021-08-13 07:42:40,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 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) [2021-08-13 07:42:40,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:42:40,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 46 [2021-08-13 07:42:40,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:42:40,626 INFO L129 PetriNetUnfolder]: 31/134 cut-off events. [2021-08-13 07:42:40,626 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:42:40,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 134 events. 31/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 493 event pairs, 4 based on Foata normal form. 41/164 useless extension candidates. Maximal degree in co-relation 177. Up to 30 conditions per place. [2021-08-13 07:42:40,629 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 8 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2021-08-13 07:42:40,629 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 125 flow [2021-08-13 07:42:40,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 07:42:40,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 07:42:40,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2021-08-13 07:42:40,636 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9057971014492754 [2021-08-13 07:42:40,637 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2021-08-13 07:42:40,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2021-08-13 07:42:40,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:42:40,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2021-08-13 07:42:40,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2021-08-13 07:42:40,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2021-08-13 07:42:40,643 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2021-08-13 07:42:40,644 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, -4 predicate places. [2021-08-13 07:42:40,644 INFO L482 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 125 flow [2021-08-13 07:42:40,644 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 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) [2021-08-13 07:42:40,644 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:42:40,644 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:42:40,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 07:42:40,644 INFO L430 AbstractCegarLoop]: === Iteration 2 === [Process2Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:42:40,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:42:40,645 INFO L82 PathProgramCache]: Analyzing trace with hash 238928219, now seen corresponding path program 1 times [2021-08-13 07:42:40,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:42:40,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907955747] [2021-08-13 07:42:40,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:42:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:42:40,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:40,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:42:40,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:40,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 07:42:40,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:40,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:42:40,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:42:40,664 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:42:40,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907955747] [2021-08-13 07:42:40,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907955747] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:42:40,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:42:40,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 07:42:40,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907721445] [2021-08-13 07:42:40,665 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 07:42:40,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:42:40,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 07:42:40,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 07:42:40,667 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 46 [2021-08-13 07:42:40,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-08-13 07:42:40,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:42:40,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 46 [2021-08-13 07:42:40,668 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:42:40,724 INFO L129 PetriNetUnfolder]: 97/297 cut-off events. [2021-08-13 07:42:40,725 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:42:40,727 INFO L84 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 297 events. 97/297 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1514 event pairs, 20 based on Foata normal form. 4/270 useless extension candidates. Maximal degree in co-relation 525. Up to 100 conditions per place. [2021-08-13 07:42:40,728 INFO L132 encePairwiseOnDemand]: 37/46 looper letters, 11 selfloop transitions, 6 changer transitions 0/48 dead transitions. [2021-08-13 07:42:40,728 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 169 flow [2021-08-13 07:42:40,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 07:42:40,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 07:42:40,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2021-08-13 07:42:40,730 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8188405797101449 [2021-08-13 07:42:40,730 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 113 transitions. [2021-08-13 07:42:40,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 113 transitions. [2021-08-13 07:42:40,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:42:40,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 113 transitions. [2021-08-13 07:42:40,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2021-08-13 07:42:40,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2021-08-13 07:42:40,732 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2021-08-13 07:42:40,732 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2021-08-13 07:42:40,732 INFO L482 AbstractCegarLoop]: Abstraction has has 46 places, 48 transitions, 169 flow [2021-08-13 07:42:40,732 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-08-13 07:42:40,732 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:42:40,732 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:42:40,733 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 07:42:40,733 INFO L430 AbstractCegarLoop]: === Iteration 3 === [Process2Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:42:40,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:42:40,733 INFO L82 PathProgramCache]: Analyzing trace with hash -372247321, now seen corresponding path program 2 times [2021-08-13 07:42:40,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:42:40,734 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928123773] [2021-08-13 07:42:40,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:42:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:42:40,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:40,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:42:40,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:40,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 07:42:40,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:40,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:42:40,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:42:40,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:42:40,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928123773] [2021-08-13 07:42:40,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928123773] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:42:40,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:42:40,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 07:42:40,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313499182] [2021-08-13 07:42:40,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 07:42:40,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:42:40,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 07:42:40,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 07:42:40,755 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 46 [2021-08-13 07:42:40,755 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-08-13 07:42:40,755 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:42:40,755 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 46 [2021-08-13 07:42:40,755 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:42:40,817 INFO L129 PetriNetUnfolder]: 86/288 cut-off events. [2021-08-13 07:42:40,817 INFO L130 PetriNetUnfolder]: For 60/75 co-relation queries the response was YES. [2021-08-13 07:42:40,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 288 events. 86/288 cut-off events. For 60/75 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1212 event pairs, 12 based on Foata normal form. 12/278 useless extension candidates. Maximal degree in co-relation 633. Up to 110 conditions per place. [2021-08-13 07:42:40,820 INFO L132 encePairwiseOnDemand]: 37/46 looper letters, 14 selfloop transitions, 7 changer transitions 0/52 dead transitions. [2021-08-13 07:42:40,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 227 flow [2021-08-13 07:42:40,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 07:42:40,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 07:42:40,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2021-08-13 07:42:40,822 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-08-13 07:42:40,822 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2021-08-13 07:42:40,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2021-08-13 07:42:40,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:42:40,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2021-08-13 07:42:40,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2021-08-13 07:42:40,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2021-08-13 07:42:40,823 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2021-08-13 07:42:40,824 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2021-08-13 07:42:40,824 INFO L482 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 227 flow [2021-08-13 07:42:40,824 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-08-13 07:42:40,824 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:42:40,824 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:42:40,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 07:42:40,824 INFO L430 AbstractCegarLoop]: === Iteration 4 === [Process2Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:42:40,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:42:40,825 INFO L82 PathProgramCache]: Analyzing trace with hash -2143248662, now seen corresponding path program 1 times [2021-08-13 07:42:40,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:42:40,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253265696] [2021-08-13 07:42:40,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:42:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:42:40,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:40,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:42:40,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:40,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 07:42:40,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:40,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:42:40,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:42:40,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:42:40,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253265696] [2021-08-13 07:42:40,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253265696] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:42:40,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:42:40,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 07:42:40,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513679789] [2021-08-13 07:42:40,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 07:42:40,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:42:40,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 07:42:40,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 07:42:40,845 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 46 [2021-08-13 07:42:40,845 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 52 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2021-08-13 07:42:40,845 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:42:40,845 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 46 [2021-08-13 07:42:40,845 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:42:40,917 INFO L129 PetriNetUnfolder]: 94/325 cut-off events. [2021-08-13 07:42:40,917 INFO L130 PetriNetUnfolder]: For 198/218 co-relation queries the response was YES. [2021-08-13 07:42:40,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 325 events. 94/325 cut-off events. For 198/218 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1446 event pairs, 11 based on Foata normal form. 6/309 useless extension candidates. Maximal degree in co-relation 864. Up to 124 conditions per place. [2021-08-13 07:42:40,921 INFO L132 encePairwiseOnDemand]: 38/46 looper letters, 16 selfloop transitions, 10 changer transitions 0/57 dead transitions. [2021-08-13 07:42:40,921 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 309 flow [2021-08-13 07:42:40,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 07:42:40,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 07:42:40,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2021-08-13 07:42:40,926 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8188405797101449 [2021-08-13 07:42:40,926 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 113 transitions. [2021-08-13 07:42:40,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 113 transitions. [2021-08-13 07:42:40,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:42:40,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 113 transitions. [2021-08-13 07:42:40,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2021-08-13 07:42:40,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2021-08-13 07:42:40,930 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2021-08-13 07:42:40,930 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2021-08-13 07:42:40,930 INFO L482 AbstractCegarLoop]: Abstraction has has 50 places, 57 transitions, 309 flow [2021-08-13 07:42:40,931 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2021-08-13 07:42:40,931 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:42:40,931 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:42:40,931 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 07:42:40,931 INFO L430 AbstractCegarLoop]: === Iteration 5 === [Process2Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:42:40,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:42:40,933 INFO L82 PathProgramCache]: Analyzing trace with hash -2035447416, now seen corresponding path program 2 times [2021-08-13 07:42:40,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:42:40,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930066790] [2021-08-13 07:42:40,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:42:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:42:40,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:40,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:42:40,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:40,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 07:42:40,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:40,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:42:40,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:42:40,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:42:40,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930066790] [2021-08-13 07:42:40,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930066790] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:42:40,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:42:40,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 07:42:40,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287053991] [2021-08-13 07:42:40,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 07:42:40,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:42:40,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 07:42:40,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 07:42:40,975 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 46 [2021-08-13 07:42:40,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 57 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2021-08-13 07:42:40,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:42:40,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 46 [2021-08-13 07:42:40,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:42:41,051 INFO L129 PetriNetUnfolder]: 87/318 cut-off events. [2021-08-13 07:42:41,052 INFO L130 PetriNetUnfolder]: For 399/437 co-relation queries the response was YES. [2021-08-13 07:42:41,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 981 conditions, 318 events. 87/318 cut-off events. For 399/437 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1269 event pairs, 9 based on Foata normal form. 8/310 useless extension candidates. Maximal degree in co-relation 964. Up to 113 conditions per place. [2021-08-13 07:42:41,056 INFO L132 encePairwiseOnDemand]: 38/46 looper letters, 16 selfloop transitions, 8 changer transitions 0/55 dead transitions. [2021-08-13 07:42:41,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 341 flow [2021-08-13 07:42:41,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 07:42:41,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 07:42:41,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2021-08-13 07:42:41,058 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-08-13 07:42:41,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2021-08-13 07:42:41,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2021-08-13 07:42:41,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:42:41,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2021-08-13 07:42:41,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2021-08-13 07:42:41,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2021-08-13 07:42:41,060 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2021-08-13 07:42:41,060 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2021-08-13 07:42:41,060 INFO L482 AbstractCegarLoop]: Abstraction has has 52 places, 55 transitions, 341 flow [2021-08-13 07:42:41,060 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2021-08-13 07:42:41,060 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:42:41,061 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:42:41,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 07:42:41,061 INFO L430 AbstractCegarLoop]: === Iteration 6 === [Process2Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:42:41,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:42:41,063 INFO L82 PathProgramCache]: Analyzing trace with hash 206271081, now seen corresponding path program 1 times [2021-08-13 07:42:41,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:42:41,064 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035815224] [2021-08-13 07:42:41,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:42:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:42:41,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:41,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:42:41,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:41,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 07:42:41,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:41,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 07:42:41,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:41,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:42:41,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:42:41,125 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:42:41,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035815224] [2021-08-13 07:42:41,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035815224] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:42:41,125 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:42:41,125 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 07:42:41,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675439226] [2021-08-13 07:42:41,126 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 07:42:41,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:42:41,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 07:42:41,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 07:42:41,132 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 46 [2021-08-13 07:42:41,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 55 transitions, 341 flow. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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) [2021-08-13 07:42:41,132 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:42:41,132 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 46 [2021-08-13 07:42:41,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:42:41,229 INFO L129 PetriNetUnfolder]: 244/573 cut-off events. [2021-08-13 07:42:41,230 INFO L130 PetriNetUnfolder]: For 506/535 co-relation queries the response was YES. [2021-08-13 07:42:41,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1666 conditions, 573 events. 244/573 cut-off events. For 506/535 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2358 event pairs, 41 based on Foata normal form. 18/566 useless extension candidates. Maximal degree in co-relation 1645. Up to 249 conditions per place. [2021-08-13 07:42:41,237 INFO L132 encePairwiseOnDemand]: 42/46 looper letters, 15 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2021-08-13 07:42:41,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 60 transitions, 387 flow [2021-08-13 07:42:41,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-13 07:42:41,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-08-13 07:42:41,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2021-08-13 07:42:41,238 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7554347826086957 [2021-08-13 07:42:41,238 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 139 transitions. [2021-08-13 07:42:41,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 139 transitions. [2021-08-13 07:42:41,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:42:41,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 139 transitions. [2021-08-13 07:42:41,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2021-08-13 07:42:41,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 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) [2021-08-13 07:42:41,240 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 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) [2021-08-13 07:42:41,241 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2021-08-13 07:42:41,241 INFO L482 AbstractCegarLoop]: Abstraction has has 55 places, 60 transitions, 387 flow [2021-08-13 07:42:41,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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) [2021-08-13 07:42:41,241 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:42:41,241 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:42:41,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 07:42:41,241 INFO L430 AbstractCegarLoop]: === Iteration 7 === [Process2Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:42:41,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:42:41,242 INFO L82 PathProgramCache]: Analyzing trace with hash 792690294, now seen corresponding path program 1 times [2021-08-13 07:42:41,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:42:41,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809077931] [2021-08-13 07:42:41,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:42:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:42:41,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:41,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:42:41,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:41,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 07:42:41,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:41,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 07:42:41,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:41,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:42:41,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:42:41,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:42:41,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809077931] [2021-08-13 07:42:41,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809077931] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:42:41,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:42:41,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 07:42:41,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625121226] [2021-08-13 07:42:41,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 07:42:41,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:42:41,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 07:42:41,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 07:42:41,305 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 46 [2021-08-13 07:42:41,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 60 transitions, 387 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2021-08-13 07:42:41,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:42:41,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 46 [2021-08-13 07:42:41,310 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:42:41,412 INFO L129 PetriNetUnfolder]: 264/617 cut-off events. [2021-08-13 07:42:41,412 INFO L130 PetriNetUnfolder]: For 604/669 co-relation queries the response was YES. [2021-08-13 07:42:41,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2083 conditions, 617 events. 264/617 cut-off events. For 604/669 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2551 event pairs, 39 based on Foata normal form. 20/609 useless extension candidates. Maximal degree in co-relation 2058. Up to 286 conditions per place. [2021-08-13 07:42:41,419 INFO L132 encePairwiseOnDemand]: 42/46 looper letters, 16 selfloop transitions, 3 changer transitions 5/66 dead transitions. [2021-08-13 07:42:41,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 459 flow [2021-08-13 07:42:41,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-13 07:42:41,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-08-13 07:42:41,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2021-08-13 07:42:41,422 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7554347826086957 [2021-08-13 07:42:41,422 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 139 transitions. [2021-08-13 07:42:41,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 139 transitions. [2021-08-13 07:42:41,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:42:41,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 139 transitions. [2021-08-13 07:42:41,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2021-08-13 07:42:41,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 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) [2021-08-13 07:42:41,423 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 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) [2021-08-13 07:42:41,423 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 10 predicate places. [2021-08-13 07:42:41,423 INFO L482 AbstractCegarLoop]: Abstraction has has 58 places, 66 transitions, 459 flow [2021-08-13 07:42:41,423 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2021-08-13 07:42:41,423 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:42:41,423 INFO L266 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:42:41,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 07:42:41,424 INFO L430 AbstractCegarLoop]: === Iteration 8 === [Process2Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:42:41,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:42:41,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1195868967, now seen corresponding path program 2 times [2021-08-13 07:42:41,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:42:41,424 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673967006] [2021-08-13 07:42:41,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:42:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 07:42:41,440 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 07:42:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 07:42:41,448 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 07:42:41,464 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-13 07:42:41,464 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-13 07:42:41,465 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 07:42:41,467 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-13 07:42:41,490 INFO L202 PluginConnector]: Adding new model FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.08 07:42:41 BasicIcfg [2021-08-13 07:42:41,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-13 07:42:41,491 INFO L168 Benchmark]: Toolchain (without parser) took 1396.98 ms. Allocated memory is still 199.2 MB. Free memory was 179.7 MB in the beginning and 151.2 MB in the end (delta: 28.6 MB). Peak memory consumption was 29.1 MB. Max. memory is 8.0 GB. [2021-08-13 07:42:41,492 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 199.2 MB. Free memory was 180.8 MB in the beginning and 180.8 MB in the end (delta: 83.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-13 07:42:41,494 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.74 ms. Allocated memory is still 199.2 MB. Free memory was 179.6 MB in the beginning and 178.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 07:42:41,497 INFO L168 Benchmark]: Boogie Preprocessor took 14.32 ms. Allocated memory is still 199.2 MB. Free memory was 178.2 MB in the beginning and 177.2 MB in the end (delta: 965.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 07:42:41,497 INFO L168 Benchmark]: RCFGBuilder took 203.38 ms. Allocated memory is still 199.2 MB. Free memory was 177.1 MB in the beginning and 164.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-08-13 07:42:41,498 INFO L168 Benchmark]: TraceAbstraction took 1125.85 ms. Allocated memory is still 199.2 MB. Free memory was 164.1 MB in the beginning and 151.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 8.0 GB. [2021-08-13 07:42:41,501 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 199.2 MB. Free memory was 180.8 MB in the beginning and 180.8 MB in the end (delta: 83.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.74 ms. Allocated memory is still 199.2 MB. Free memory was 179.6 MB in the beginning and 178.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.32 ms. Allocated memory is still 199.2 MB. Free memory was 178.2 MB in the beginning and 177.2 MB in the end (delta: 965.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 203.38 ms. Allocated memory is still 199.2 MB. Free memory was 177.1 MB in the beginning and 164.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1125.85 ms. Allocated memory is still 199.2 MB. Free memory was 164.1 MB in the beginning and 151.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 87]: assertion can be violated assertion can be violated We found a FailurePath: [L28] 0 critical := 0; VAL [critical=0] [L29] 0 clk := 0; VAL [clk=0, critical=0] [L30] 0 assume wait >= 1; VAL [clk=0, critical=0, wait=1] [L33] 0 assume wait >= delay; VAL [clk=0, critical=0, delay=1, wait=1] [L34] FORK 0 fork 0 Clock(); VAL [clk=0, critical=0, delay=1, wait=1] [L35] FORK 0 fork 1 Process1(); VAL [clk=0, critical=0, delay=1, wait=1] [L36] FORK 0 fork 2 Process2(); VAL [clk=0, critical=0, delay=1, wait=1] [L78] COND TRUE 3 lock != 2 VAL [clk=0, critical=0, delay=1, lock=0, wait=1] [L57] COND TRUE 2 lock != 1 VAL [clk=0, critical=0, delay=1, lock=0, wait=1] [L58] 2 deadline := clk + delay; VAL [clk=0, critical=0, deadline=1, delay=1, lock=0, wait=1] [L59] 2 assume lock == 0; VAL [clk=0, critical=0, deadline=1, delay=1, lock=0, wait=1] [L79] 3 deadline := clk + delay; VAL [clk=0, critical=0, deadline=1, deadline=1, delay=1, lock=0, wait=1] [L80] 3 assume lock == 0; VAL [clk=0, critical=0, deadline=1, deadline=1, delay=1, lock=0, wait=1] [L60] 2 lock := 1; VAL [clk=0, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L61] 2 assume clk <= deadline; VAL [clk=0, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L62] 2 deadline := clk + wait; VAL [clk=0, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L44] 1 clk := clk + 1; VAL [clk=1, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L63] 2 assume clk >= deadline; VAL [clk=1, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L64] 2 assume lock == 1; VAL [clk=1, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L66] 2 assert critical == 0; VAL [clk=1, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L67] 2 critical := 1; VAL [clk=1, critical=1, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L81] 3 lock := 2; VAL [clk=1, critical=1, deadline=1, deadline=1, delay=1, lock=2, wait=1] [L82] 3 assume clk <= deadline; VAL [clk=1, critical=1, deadline=1, deadline=1, delay=1, lock=2, wait=1] [L83] 3 deadline := clk + wait; VAL [clk=1, critical=1, deadline=2, deadline=1, delay=1, lock=2, wait=1] [L44] 1 clk := clk + 1; VAL [clk=2, critical=1, deadline=2, deadline=1, delay=1, lock=2, wait=1] [L84] 3 assume clk >= deadline; VAL [clk=2, critical=1, deadline=2, deadline=1, delay=1, lock=2, wait=1] [L85] 3 assume lock == 2; VAL [clk=2, critical=1, deadline=2, deadline=1, delay=1, lock=2, wait=1] [L87] 3 assert critical == 0; VAL [clk=2, critical=1, deadline=2, deadline=1, delay=1, lock=2, wait=1] - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 78 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 1042.0ms, OverallIterations: 8, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 605.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 32.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 79 SDtfs, 30 SDslu, 4 SDs, 0 SdLazy, 92 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 145.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=459occurred in iteration=7, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.5ms SsaConstructionTime, 73.0ms SatisfiabilityAnalysisTime, 160.2ms InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 222 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...