/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/NonAtomicIncrement_2Threads.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 08:22:52,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 08:22:52,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 08:22:52,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-13 08:22:52,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 08:22:52,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 08:22:52,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 08:22:52,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 08:22:52,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 08:22:52,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 08:22:52,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 08:22:52,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 08:22:52,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 08:22:52,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 08:22:52,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 08:22:52,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 08:22:52,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 08:22:52,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 08:22:52,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 08:22:52,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 08:22:52,440 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-13 08:22:52,469 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 08:22:52,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 08:22:52,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 08:22:52,471 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 08:22:52,471 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 08:22:52,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 08:22:52,471 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 08:22:52,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 08:22:52,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 08:22:52,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 08:22:52,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 08:22:52,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 08:22:52,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 08:22:52,473 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 08:22:52,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 08:22:52,473 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 08:22:52,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 08:22:52,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 08:22:52,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 08:22:52,473 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 08:22:52,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 08:22:52,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 08:22:52,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 08:22:52,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 08:22:52,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 08:22:52,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 08:22:52,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 08:22:52,474 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 08:22:52,474 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 08:22:52,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 08:22:52,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 08:22:52,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 08:22:52,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 08:22:52,726 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-13 08:22:52,729 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-13 08:22:52,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/NonAtomicIncrement_2Threads.bpl [2021-06-13 08:22:52,730 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/NonAtomicIncrement_2Threads.bpl' [2021-06-13 08:22:52,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 08:22:52,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-13 08:22:52,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 08:22:52,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 08:22:52,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 08:22:52,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:22:52" (1/1) ... [2021-06-13 08:22:52,767 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:22:52" (1/1) ... [2021-06-13 08:22:52,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 08:22:52,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 08:22:52,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 08:22:52,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 08:22:52,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:22:52" (1/1) ... [2021-06-13 08:22:52,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:22:52" (1/1) ... [2021-06-13 08:22:52,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:22:52" (1/1) ... [2021-06-13 08:22:52,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:22:52" (1/1) ... [2021-06-13 08:22:52,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:22:52" (1/1) ... [2021-06-13 08:22:52,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:22:52" (1/1) ... [2021-06-13 08:22:52,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:22:52" (1/1) ... [2021-06-13 08:22:52,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 08:22:52,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 08:22:52,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 08:22:52,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 08:22:52,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:22:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 08:22:52,836 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-13 08:22:52,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 08:22:52,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 08:22:52,836 INFO L124 BoogieDeclarations]: Specification and implementation of procedure IncrementProcess1 given in one single declaration [2021-06-13 08:22:52,836 INFO L130 BoogieDeclarations]: Found specification of procedure IncrementProcess1 [2021-06-13 08:22:52,836 INFO L138 BoogieDeclarations]: Found implementation of procedure IncrementProcess1 [2021-06-13 08:22:52,836 INFO L124 BoogieDeclarations]: Specification and implementation of procedure IncrementProcess2 given in one single declaration [2021-06-13 08:22:52,837 INFO L130 BoogieDeclarations]: Found specification of procedure IncrementProcess2 [2021-06-13 08:22:52,837 INFO L138 BoogieDeclarations]: Found implementation of procedure IncrementProcess2 [2021-06-13 08:22:52,837 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 08:22:52,962 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 08:22:52,962 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-13 08:22:52,964 INFO L202 PluginConnector]: Adding new model NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 08:22:52 BoogieIcfgContainer [2021-06-13 08:22:52,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 08:22:52,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 08:22:52,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 08:22:52,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 08:22:52,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:22:52" (1/2) ... [2021-06-13 08:22:52,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433b8f85 and model type NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 08:22:52, skipping insertion in model container [2021-06-13 08:22:52,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 08:22:52" (2/2) ... [2021-06-13 08:22:52,972 INFO L111 eAbstractionObserver]: Analyzing ICFG NonAtomicIncrement_2Threads.bpl [2021-06-13 08:22:52,978 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 08:22:52,979 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 08:22:52,979 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 08:22:53,014 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,014 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,014 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,015 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,015 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,015 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,015 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,015 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,015 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,015 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,016 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,016 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,016 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,016 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,016 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,016 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,017 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,017 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,017 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,017 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,017 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,017 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,017 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,018 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,019 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,024 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:22:53,030 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-13 08:22:53,043 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-13 08:22:53,056 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 08:22:53,057 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 08:22:53,057 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 08:22:53,057 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 08:22:53,057 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 08:22:53,057 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 08:22:53,057 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 08:22:53,057 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 08:22:53,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 74 flow [2021-06-13 08:22:53,078 INFO L129 PetriNetUnfolder]: 1/24 cut-off events. [2021-06-13 08:22:53,078 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-13 08:22:53,080 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 24 events. 1/24 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 9. Up to 3 conditions per place. [2021-06-13 08:22:53,080 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 26 transitions, 74 flow [2021-06-13 08:22:53,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 22 transitions, 62 flow [2021-06-13 08:22:53,089 INFO L129 PetriNetUnfolder]: 1/21 cut-off events. [2021-06-13 08:22:53,089 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-13 08:22:53,089 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:22:53,090 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:22:53,090 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:22:53,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:22:53,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1561531614, now seen corresponding path program 1 times [2021-06-13 08:22:53,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:22:53,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882172003] [2021-06-13 08:22:53,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:22:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:22:53,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:53,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:22:53,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:53,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:22:53,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:53,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:22:53,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:22:53,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:22:53,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882172003] [2021-06-13 08:22:53,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882172003] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:22:53,186 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:22:53,186 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:22:53,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564764957] [2021-06-13 08:22:53,191 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:22:53,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:22:53,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:22:53,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:22:53,201 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 26 [2021-06-13 08:22:53,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:22:53,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:22:53,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 26 [2021-06-13 08:22:53,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:22:53,233 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-06-13 08:22:53,234 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-06-13 08:22:53,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 20 events. 0/20 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 15 event pairs, 0 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-13 08:22:53,234 INFO L132 encePairwiseOnDemand]: 24/26 looper letters, 1 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2021-06-13 08:22:53,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 20 transitions, 56 flow [2021-06-13 08:22:53,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:22:53,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:22:53,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2021-06-13 08:22:53,241 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9230769230769231 [2021-06-13 08:22:53,242 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 72 transitions. [2021-06-13 08:22:53,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 72 transitions. [2021-06-13 08:22:53,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:22:53,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 72 transitions. [2021-06-13 08:22:53,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:22:53,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 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) [2021-06-13 08:22:53,247 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 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) [2021-06-13 08:22:53,248 INFO L185 Difference]: Start difference. First operand has 27 places, 22 transitions, 62 flow. Second operand 3 states and 72 transitions. [2021-06-13 08:22:53,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 20 transitions, 56 flow [2021-06-13 08:22:53,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 20 transitions, 48 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-13 08:22:53,252 INFO L241 Difference]: Finished difference. Result has 25 places, 20 transitions, 46 flow [2021-06-13 08:22:53,253 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2021-06-13 08:22:53,253 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2021-06-13 08:22:53,253 INFO L482 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 46 flow [2021-06-13 08:22:53,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:22:53,253 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:22:53,254 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:22:53,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 08:22:53,254 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:22:53,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:22:53,254 INFO L82 PathProgramCache]: Analyzing trace with hash -477173230, now seen corresponding path program 1 times [2021-06-13 08:22:53,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:22:53,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112381690] [2021-06-13 08:22:53,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:22:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:22:53,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:53,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:22:53,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:53,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:22:53,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:53,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:22:53,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:53,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:22:53,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:53,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:22:53,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:53,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:22:53,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:53,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:22:53,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:53,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:22:53,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:53,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:22:53,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:53,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:22:53,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:53,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:22:53,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:53,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:22:53,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:53,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:22:53,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:22:53,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:22:53,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112381690] [2021-06-13 08:22:53,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112381690] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:22:53,399 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:22:53,399 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-06-13 08:22:53,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721201921] [2021-06-13 08:22:53,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-13 08:22:53,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:22:53,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-13 08:22:53,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-06-13 08:22:53,403 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 26 [2021-06-13 08:22:53,403 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 46 flow. Second operand has 15 states, 15 states have (on average 10.066666666666666) internal successors, (151), 15 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:22:53,403 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:22:53,403 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 26 [2021-06-13 08:22:53,403 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:22:53,656 INFO L129 PetriNetUnfolder]: 73/245 cut-off events. [2021-06-13 08:22:53,656 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-06-13 08:22:53,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 245 events. 73/245 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1210 event pairs, 16 based on Foata normal form. 4/249 useless extension candidates. Maximal degree in co-relation 413. Up to 71 conditions per place. [2021-06-13 08:22:53,659 INFO L132 encePairwiseOnDemand]: 12/26 looper letters, 45 selfloop transitions, 27 changer transitions 15/91 dead transitions. [2021-06-13 08:22:53,659 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 91 transitions, 380 flow [2021-06-13 08:22:53,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-13 08:22:53,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-06-13 08:22:53,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 253 transitions. [2021-06-13 08:22:53,661 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5405982905982906 [2021-06-13 08:22:53,661 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 253 transitions. [2021-06-13 08:22:53,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 253 transitions. [2021-06-13 08:22:53,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:22:53,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 253 transitions. [2021-06-13 08:22:53,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 14.055555555555555) internal successors, (253), 18 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:22:53,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 26.0) internal successors, (494), 19 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:22:53,665 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 26.0) internal successors, (494), 19 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:22:53,665 INFO L185 Difference]: Start difference. First operand has 25 places, 20 transitions, 46 flow. Second operand 18 states and 253 transitions. [2021-06-13 08:22:53,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 91 transitions, 380 flow [2021-06-13 08:22:53,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 91 transitions, 373 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:22:53,668 INFO L241 Difference]: Finished difference. Result has 53 places, 48 transitions, 239 flow [2021-06-13 08:22:53,668 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=239, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2021-06-13 08:22:53,668 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 26 predicate places. [2021-06-13 08:22:53,668 INFO L482 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 239 flow [2021-06-13 08:22:53,668 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 10.066666666666666) internal successors, (151), 15 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:22:53,669 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:22:53,669 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:22:53,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 08:22:53,669 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:22:53,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:22:53,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1021165758, now seen corresponding path program 2 times [2021-06-13 08:22:53,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:22:53,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764975466] [2021-06-13 08:22:53,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:22:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-13 08:22:53,678 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-13 08:22:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-13 08:22:53,684 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-13 08:22:53,693 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-13 08:22:53,693 INFO L573 BasicCegarLoop]: Counterexample might be feasible [2021-06-13 08:22:53,693 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 08:22:53,695 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 08:22:53,704 INFO L202 PluginConnector]: Adding new model NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 08:22:53 BasicIcfg [2021-06-13 08:22:53,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 08:22:53,705 INFO L168 Benchmark]: Toolchain (without parser) took 949.94 ms. Allocated memory is still 207.6 MB. Free memory was 187.7 MB in the beginning and 107.8 MB in the end (delta: 80.0 MB). Peak memory consumption was 80.9 MB. Max. memory is 8.0 GB. [2021-06-13 08:22:53,705 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 207.6 MB. Free memory is still 188.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 08:22:53,705 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.33 ms. Allocated memory is still 207.6 MB. Free memory was 187.7 MB in the beginning and 186.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 08:22:53,706 INFO L168 Benchmark]: Boogie Preprocessor took 8.08 ms. Allocated memory is still 207.6 MB. Free memory was 186.3 MB in the beginning and 185.3 MB in the end (delta: 928.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 08:22:53,706 INFO L168 Benchmark]: RCFGBuilder took 183.09 ms. Allocated memory is still 207.6 MB. Free memory was 185.3 MB in the beginning and 175.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-06-13 08:22:53,711 INFO L168 Benchmark]: TraceAbstraction took 736.85 ms. Allocated memory is still 207.6 MB. Free memory was 174.6 MB in the beginning and 107.8 MB in the end (delta: 66.8 MB). Peak memory consumption was 67.3 MB. Max. memory is 8.0 GB. [2021-06-13 08:22:53,714 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 207.6 MB. Free memory is still 188.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 16.33 ms. Allocated memory is still 207.6 MB. Free memory was 187.7 MB in the beginning and 186.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 8.08 ms. Allocated memory is still 207.6 MB. Free memory was 186.3 MB in the beginning and 185.3 MB in the end (delta: 928.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 183.09 ms. Allocated memory is still 207.6 MB. Free memory was 185.3 MB in the beginning and 175.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 736.85 ms. Allocated memory is still 207.6 MB. Free memory was 174.6 MB in the beginning and 107.8 MB in the end (delta: 66.8 MB). Peak memory consumption was 67.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: assertion can be violated assertion can be violated We found a FailurePath: [L22] 0 x := 0; VAL [x=0] [L24] FORK 0 fork 1 IncrementProcess1(); VAL [x=0] [L25] FORK 0 fork 2 IncrementProcess2(); VAL [x=0] [L54] 2 localx := x; VAL [localx=0, x=0] [L38] 1 localx := x; VAL [localx=0, localx=0, x=0] [L39] 1 x := localx + 1; VAL [localx=0, localx=0, x=1] [L41] 1 localx := x; VAL [localx=1, localx=0, x=1] [L42] 1 x := localx + 1; VAL [localx=1, localx=0, x=2] [L55] 2 x := localx + 1; VAL [localx=1, localx=0, x=1] [L44] 1 localx := x; VAL [localx=1, localx=0, x=1] [L57] 2 localx := x; VAL [localx=1, localx=1, x=1] [L58] 2 x := localx + 1; VAL [localx=1, localx=1, x=2] [L60] 2 localx := x; VAL [localx=1, localx=2, x=2] [L61] 2 x := localx + 1; VAL [localx=1, localx=2, x=3] [L45] 1 x := localx + 1; VAL [localx=1, localx=2, x=2] [L26] JOIN 1 join 1; VAL [localx=1, localx=2, x=2] [L27] JOIN 2 join 2; VAL [localx=1, localx=2, x=2] [L28] 0 assert x >= 3; VAL [localx=1, localx=2, x=2] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 43 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 6.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 639.9ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 322.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 25.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 45 SDtfs, 47 SDslu, 42 SDs, 0 SdLazy, 198 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 100.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 179.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred in iteration=2, InterpolantAutomatonStates: 21, 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: 5.1ms SsaConstructionTime, 27.7ms SatisfiabilityAnalysisTime, 157.8ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 92 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...