/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/NonAtomicIncrement_2Threads_Loop.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-820ea7a [2022-02-18 15:51:41,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-18 15:51:41,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-18 15:51:41,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-18 15:51:41,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-18 15:51:41,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-18 15:51:41,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-18 15:51:41,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-18 15:51:41,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-18 15:51:41,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-18 15:51:41,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-18 15:51:41,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-18 15:51:41,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-18 15:51:41,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-18 15:51:41,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-18 15:51:41,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-18 15:51:41,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-18 15:51:41,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-18 15:51:41,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-18 15:51:41,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-18 15:51:41,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-18 15:51:41,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-18 15:51:41,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-18 15:51:41,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-18 15:51:41,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-18 15:51:41,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-18 15:51:41,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-18 15:51:41,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-18 15:51:41,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-18 15:51:41,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-18 15:51:41,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-18 15:51:41,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-18 15:51:41,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-18 15:51:41,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-18 15:51:41,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-18 15:51:41,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-18 15:51:41,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-18 15:51:41,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-18 15:51:41,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-18 15:51:41,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-18 15:51:41,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-18 15:51:41,461 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-FA-NoLbe.epf [2022-02-18 15:51:41,474 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-18 15:51:41,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-18 15:51:41,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-18 15:51:41,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-18 15:51:41,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-18 15:51:41,475 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-18 15:51:41,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-18 15:51:41,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-18 15:51:41,479 INFO L138 SettingsManager]: * Use SBE=true [2022-02-18 15:51:41,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-18 15:51:41,480 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-18 15:51:41,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-18 15:51:41,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-18 15:51:41,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-18 15:51:41,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-18 15:51:41,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-18 15:51:41,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-18 15:51:41,480 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-18 15:51:41,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-18 15:51:41,480 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-18 15:51:41,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-18 15:51:41,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-18 15:51:41,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-18 15:51:41,481 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-18 15:51:41,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-18 15:51:41,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-18 15:51:41,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-18 15:51:41,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-18 15:51:41,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-18 15:51:41,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-18 15:51:41,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-18 15:51:41,481 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-18 15:51:41,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-18 15:51:41,481 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-18 15:51:41,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-18 15:51:41,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-18 15:51:41,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-18 15:51:41,663 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-18 15:51:41,675 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-18 15:51:41,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/NonAtomicIncrement_2Threads_Loop.bpl [2022-02-18 15:51:41,677 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/NonAtomicIncrement_2Threads_Loop.bpl' [2022-02-18 15:51:41,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-18 15:51:41,692 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-18 15:51:41,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-18 15:51:41,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-18 15:51:41,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-18 15:51:41,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 03:51:41" (1/1) ... [2022-02-18 15:51:41,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 03:51:41" (1/1) ... [2022-02-18 15:51:41,708 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-18 15:51:41,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-18 15:51:41,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-18 15:51:41,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-18 15:51:41,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-18 15:51:41,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 03:51:41" (1/1) ... [2022-02-18 15:51:41,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 03:51:41" (1/1) ... [2022-02-18 15:51:41,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 03:51:41" (1/1) ... [2022-02-18 15:51:41,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 03:51:41" (1/1) ... [2022-02-18 15:51:41,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 03:51:41" (1/1) ... [2022-02-18 15:51:41,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 03:51:41" (1/1) ... [2022-02-18 15:51:41,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 03:51:41" (1/1) ... [2022-02-18 15:51:41,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-18 15:51:41,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-18 15:51:41,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-18 15:51:41,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-18 15:51:41,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 03:51:41" (1/1) ... [2022-02-18 15:51:41,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-18 15:51:41,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:51:41,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-18 15:51:41,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-18 15:51:41,770 INFO L130 BoogieDeclarations]: Found specification of procedure fistIncrementProcess [2022-02-18 15:51:41,770 INFO L138 BoogieDeclarations]: Found implementation of procedure fistIncrementProcess [2022-02-18 15:51:41,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-18 15:51:41,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-18 15:51:41,770 INFO L130 BoogieDeclarations]: Found specification of procedure secondIncrementProcess [2022-02-18 15:51:41,770 INFO L138 BoogieDeclarations]: Found implementation of procedure secondIncrementProcess [2022-02-18 15:51:41,771 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-18 15:51:41,800 INFO L234 CfgBuilder]: Building ICFG [2022-02-18 15:51:41,801 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-18 15:51:41,855 INFO L275 CfgBuilder]: Performing block encoding [2022-02-18 15:51:41,860 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-18 15:51:41,860 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-18 15:51:41,861 INFO L202 PluginConnector]: Adding new model NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 03:51:41 BoogieIcfgContainer [2022-02-18 15:51:41,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-18 15:51:41,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-18 15:51:41,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-18 15:51:41,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-18 15:51:41,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 03:51:41" (1/2) ... [2022-02-18 15:51:41,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f72854 and model type NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 03:51:41, skipping insertion in model container [2022-02-18 15:51:41,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 03:51:41" (2/2) ... [2022-02-18 15:51:41,870 INFO L111 eAbstractionObserver]: Analyzing ICFG NonAtomicIncrement_2Threads_Loop.bpl [2022-02-18 15:51:41,873 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-18 15:51:41,873 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-18 15:51:41,873 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-18 15:51:41,873 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-18 15:51:41,887 WARN L322 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,888 WARN L322 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,888 WARN L322 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,888 WARN L322 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,888 WARN L322 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,888 WARN L322 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,889 WARN L322 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,889 WARN L322 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,889 WARN L322 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,889 WARN L322 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,890 WARN L322 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,890 WARN L322 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,890 WARN L322 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,890 WARN L322 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,890 WARN L322 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,890 WARN L322 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,891 WARN L322 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,891 WARN L322 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,891 WARN L322 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,891 WARN L322 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,892 WARN L322 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,892 WARN L322 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,892 WARN L322 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,892 WARN L322 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,892 WARN L322 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,893 WARN L322 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,893 WARN L322 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,893 WARN L322 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,895 WARN L322 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,895 WARN L322 ript$VariableManager]: TermVariabe fistIncrementProcessThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,897 WARN L322 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,897 WARN L322 ript$VariableManager]: TermVariabe secondIncrementProcessThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 15:51:41,898 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-02-18 15:51:41,925 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-18 15:51:41,930 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-02-18 15:51:41,930 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-18 15:51:41,936 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 26 transitions, 74 flow [2022-02-18 15:51:41,952 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 74 states, 73 states have (on average 1.9863013698630136) internal successors, (145), 73 states have internal predecessors, (145), 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) [2022-02-18 15:51:41,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 73 states have (on average 1.9863013698630136) internal successors, (145), 73 states have internal predecessors, (145), 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) [2022-02-18 15:51:41,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-18 15:51:41,959 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:51:41,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 15:51:41,960 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:51:41,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:51:41,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1654544176, now seen corresponding path program 1 times [2022-02-18 15:51:41,969 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:51:41,969 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762927289] [2022-02-18 15:51:41,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:51:41,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:51:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:51:42,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:51:42,054 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:51:42,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762927289] [2022-02-18 15:51:42,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762927289] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 15:51:42,055 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-18 15:51:42,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-18 15:51:42,056 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630816339] [2022-02-18 15:51:42,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 15:51:42,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-18 15:51:42,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:51:42,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-18 15:51:42,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-18 15:51:42,104 INFO L87 Difference]: Start difference. First operand has 74 states, 73 states have (on average 1.9863013698630136) internal successors, (145), 73 states have internal predecessors, (145), 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) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-02-18 15:51:42,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:51:42,135 INFO L93 Difference]: Finished difference Result 110 states and 217 transitions. [2022-02-18 15:51:42,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-18 15:51:42,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) Word has length 12 [2022-02-18 15:51:42,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:51:42,145 INFO L225 Difference]: With dead ends: 110 [2022-02-18 15:51:42,145 INFO L226 Difference]: Without dead ends: 110 [2022-02-18 15:51:42,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-18 15:51:42,150 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-18 15:51:42,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 33 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-18 15:51:42,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-02-18 15:51:42,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 83. [2022-02-18 15:51:42,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.9878048780487805) internal successors, (163), 82 states have internal predecessors, (163), 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) [2022-02-18 15:51:42,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 163 transitions. [2022-02-18 15:51:42,195 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 163 transitions. Word has length 12 [2022-02-18 15:51:42,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:51:42,195 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 163 transitions. [2022-02-18 15:51:42,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-02-18 15:51:42,195 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 163 transitions. [2022-02-18 15:51:42,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-18 15:51:42,196 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:51:42,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 15:51:42,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-18 15:51:42,197 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:51:42,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:51:42,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1814938707, now seen corresponding path program 1 times [2022-02-18 15:51:42,197 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:51:42,197 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352602778] [2022-02-18 15:51:42,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:51:42,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:51:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:51:42,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:51:42,229 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:51:42,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352602778] [2022-02-18 15:51:42,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352602778] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:51:42,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584267194] [2022-02-18 15:51:42,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:51:42,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:51:42,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:51:42,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:51:42,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-18 15:51:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:51:42,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2022-02-18 15:51:42,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:51:42,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 15:51:42,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-18 15:51:42,338 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584267194] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 15:51:42,338 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-18 15:51:42,338 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-02-18 15:51:42,340 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140332656] [2022-02-18 15:51:42,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 15:51:42,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-18 15:51:42,341 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:51:42,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-18 15:51:42,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-18 15:51:42,343 INFO L87 Difference]: Start difference. First operand 83 states and 163 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2022-02-18 15:51:42,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:51:42,363 INFO L93 Difference]: Finished difference Result 119 states and 235 transitions. [2022-02-18 15:51:42,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-18 15:51:42,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) Word has length 16 [2022-02-18 15:51:42,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:51:42,365 INFO L225 Difference]: With dead ends: 119 [2022-02-18 15:51:42,365 INFO L226 Difference]: Without dead ends: 119 [2022-02-18 15:51:42,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-18 15:51:42,366 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-18 15:51:42,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 33 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-18 15:51:42,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-02-18 15:51:42,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 92. [2022-02-18 15:51:42,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.989010989010989) internal successors, (181), 91 states have internal predecessors, (181), 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) [2022-02-18 15:51:42,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 181 transitions. [2022-02-18 15:51:42,375 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 181 transitions. Word has length 16 [2022-02-18 15:51:42,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:51:42,375 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 181 transitions. [2022-02-18 15:51:42,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2022-02-18 15:51:42,376 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 181 transitions. [2022-02-18 15:51:42,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-18 15:51:42,376 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:51:42,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 15:51:42,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-18 15:51:42,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:51:42,592 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:51:42,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:51:42,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1288699306, now seen corresponding path program 1 times [2022-02-18 15:51:42,593 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:51:42,593 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463747347] [2022-02-18 15:51:42,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:51:42,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:51:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:51:42,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 15:51:42,629 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:51:42,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463747347] [2022-02-18 15:51:42,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463747347] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:51:42,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123110322] [2022-02-18 15:51:42,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:51:42,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:51:42,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:51:42,633 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:51:42,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-18 15:51:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:51:42,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2022-02-18 15:51:42,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:51:42,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 15:51:42,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:51:42,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 15:51:42,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123110322] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:51:42,788 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:51:42,788 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2022-02-18 15:51:42,789 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174660969] [2022-02-18 15:51:42,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:51:42,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-18 15:51:42,790 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:51:42,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-18 15:51:42,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-18 15:51:42,790 INFO L87 Difference]: Start difference. First operand 92 states and 181 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-02-18 15:51:42,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:51:42,833 INFO L93 Difference]: Finished difference Result 172 states and 341 transitions. [2022-02-18 15:51:42,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-18 15:51:42,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) Word has length 20 [2022-02-18 15:51:42,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:51:42,837 INFO L225 Difference]: With dead ends: 172 [2022-02-18 15:51:42,837 INFO L226 Difference]: Without dead ends: 172 [2022-02-18 15:51:42,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-18 15:51:42,838 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 60 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-18 15:51:42,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 49 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-18 15:51:42,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-02-18 15:51:42,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2022-02-18 15:51:42,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.9941520467836258) internal successors, (341), 171 states have internal predecessors, (341), 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) [2022-02-18 15:51:42,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 341 transitions. [2022-02-18 15:51:42,850 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 341 transitions. Word has length 20 [2022-02-18 15:51:42,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:51:42,850 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 341 transitions. [2022-02-18 15:51:42,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-02-18 15:51:42,850 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 341 transitions. [2022-02-18 15:51:42,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-18 15:51:42,851 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:51:42,852 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 15:51:42,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-18 15:51:43,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-02-18 15:51:43,059 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:51:43,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:51:43,061 INFO L85 PathProgramCache]: Analyzing trace with hash -133340836, now seen corresponding path program 2 times [2022-02-18 15:51:43,061 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:51:43,061 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306333070] [2022-02-18 15:51:43,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:51:43,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:51:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:51:43,120 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-02-18 15:51:43,121 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:51:43,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306333070] [2022-02-18 15:51:43,121 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306333070] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:51:43,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704576750] [2022-02-18 15:51:43,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 15:51:43,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:51:43,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:51:43,122 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:51:43,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-18 15:51:43,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 15:51:43,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:51:43,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-18 15:51:43,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:51:43,291 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:51:43,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-18 15:51:43,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704576750] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 15:51:43,292 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-18 15:51:43,292 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 13 [2022-02-18 15:51:43,293 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871783478] [2022-02-18 15:51:43,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 15:51:43,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-18 15:51:43,293 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:51:43,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-18 15:51:43,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-02-18 15:51:43,294 INFO L87 Difference]: Start difference. First operand 172 states and 341 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 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) [2022-02-18 15:51:43,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:51:43,481 INFO L93 Difference]: Finished difference Result 495 states and 986 transitions. [2022-02-18 15:51:43,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-18 15:51:43,481 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 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) Word has length 28 [2022-02-18 15:51:43,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:51:43,483 INFO L225 Difference]: With dead ends: 495 [2022-02-18 15:51:43,483 INFO L226 Difference]: Without dead ends: 302 [2022-02-18 15:51:43,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2022-02-18 15:51:43,486 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 154 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-18 15:51:43,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 274 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-18 15:51:43,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-02-18 15:51:43,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 193. [2022-02-18 15:51:43,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.9739583333333333) internal successors, (379), 192 states have internal predecessors, (379), 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) [2022-02-18 15:51:43,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 379 transitions. [2022-02-18 15:51:43,507 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 379 transitions. Word has length 28 [2022-02-18 15:51:43,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:51:43,508 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 379 transitions. [2022-02-18 15:51:43,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 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) [2022-02-18 15:51:43,508 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 379 transitions. [2022-02-18 15:51:43,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-18 15:51:43,509 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:51:43,509 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 15:51:43,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-18 15:51:43,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:51:43,710 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:51:43,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:51:43,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1298991670, now seen corresponding path program 3 times [2022-02-18 15:51:43,710 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:51:43,711 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289334762] [2022-02-18 15:51:43,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:51:43,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:51:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:51:43,738 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-02-18 15:51:43,738 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:51:43,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289334762] [2022-02-18 15:51:43,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289334762] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:51:43,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302433609] [2022-02-18 15:51:43,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 15:51:43,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:51:43,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:51:43,740 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:51:43,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-18 15:51:43,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-18 15:51:43,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:51:43,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2022-02-18 15:51:43,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:51:43,824 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-02-18 15:51:43,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:51:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-02-18 15:51:43,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302433609] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:51:43,864 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:51:43,864 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2022-02-18 15:51:43,864 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317879580] [2022-02-18 15:51:43,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:51:43,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-18 15:51:43,864 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:51:43,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-18 15:51:43,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-18 15:51:43,865 INFO L87 Difference]: Start difference. First operand 193 states and 379 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2022-02-18 15:51:43,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:51:43,884 INFO L93 Difference]: Finished difference Result 383 states and 753 transitions. [2022-02-18 15:51:43,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-18 15:51:43,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) Word has length 28 [2022-02-18 15:51:43,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:51:43,885 INFO L225 Difference]: With dead ends: 383 [2022-02-18 15:51:43,885 INFO L226 Difference]: Without dead ends: 383 [2022-02-18 15:51:43,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-18 15:51:43,886 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 28 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-18 15:51:43,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 55 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-18 15:51:43,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-02-18 15:51:43,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 365. [2022-02-18 15:51:43,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.9752747252747254) internal successors, (719), 364 states have internal predecessors, (719), 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) [2022-02-18 15:51:43,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 719 transitions. [2022-02-18 15:51:43,896 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 719 transitions. Word has length 28 [2022-02-18 15:51:43,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:51:43,896 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 719 transitions. [2022-02-18 15:51:43,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2022-02-18 15:51:43,897 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 719 transitions. [2022-02-18 15:51:43,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-18 15:51:43,898 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:51:43,898 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 15:51:43,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-18 15:51:44,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:51:44,103 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:51:44,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:51:44,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1460951044, now seen corresponding path program 4 times [2022-02-18 15:51:44,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:51:44,104 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672398669] [2022-02-18 15:51:44,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:51:44,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:51:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:51:44,201 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:51:44,201 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:51:44,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672398669] [2022-02-18 15:51:44,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672398669] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:51:44,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036970676] [2022-02-18 15:51:44,202 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 15:51:44,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:51:44,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:51:44,208 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:51:44,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-18 15:51:44,231 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 15:51:44,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:51:44,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-18 15:51:44,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:51:44,310 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:51:44,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:51:44,420 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:51:44,420 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036970676] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:51:44,420 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:51:44,420 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2022-02-18 15:51:44,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169776893] [2022-02-18 15:51:44,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:51:44,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-18 15:51:44,421 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:51:44,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-18 15:51:44,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-02-18 15:51:44,422 INFO L87 Difference]: Start difference. First operand 365 states and 719 transitions. Second operand has 21 states, 20 states have (on average 3.55) internal successors, (71), 20 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) [2022-02-18 15:51:45,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:51:45,002 INFO L93 Difference]: Finished difference Result 1490 states and 2947 transitions. [2022-02-18 15:51:45,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-18 15:51:45,003 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.55) internal successors, (71), 20 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) Word has length 36 [2022-02-18 15:51:45,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:51:45,003 INFO L225 Difference]: With dead ends: 1490 [2022-02-18 15:51:45,003 INFO L226 Difference]: Without dead ends: 0 [2022-02-18 15:51:45,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1237, Invalid=2669, Unknown=0, NotChecked=0, Total=3906 [2022-02-18 15:51:45,006 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 388 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-18 15:51:45,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 563 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-18 15:51:45,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-18 15:51:45,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-18 15:51:45,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-02-18 15:51:45,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-18 15:51:45,007 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2022-02-18 15:51:45,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:51:45,008 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-18 15:51:45,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.55) internal successors, (71), 20 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) [2022-02-18 15:51:45,008 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-18 15:51:45,008 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-18 15:51:45,013 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-02-18 15:51:45,014 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-18 15:51:45,014 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-18 15:51:45,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-18 15:51:45,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:51:45,234 INFO L732 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2022-02-18 15:51:45,235 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-18 15:51:45,235 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-18 15:51:45,237 INFO L202 PluginConnector]: Adding new model NonAtomicIncrement_2Threads_Loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 03:51:45 BasicIcfg [2022-02-18 15:51:45,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-18 15:51:45,238 INFO L158 Benchmark]: Toolchain (without parser) took 3545.58ms. Allocated memory was 204.5MB in the beginning and 245.4MB in the end (delta: 40.9MB). Free memory was 169.5MB in the beginning and 206.6MB in the end (delta: -37.1MB). Peak memory consumption was 5.9MB. Max. memory is 8.0GB. [2022-02-18 15:51:45,238 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 204.5MB. Free memory was 170.6MB in the beginning and 170.5MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-18 15:51:45,238 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.90ms. Allocated memory is still 204.5MB. Free memory was 169.5MB in the beginning and 168.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-18 15:51:45,238 INFO L158 Benchmark]: Boogie Preprocessor took 9.84ms. Allocated memory is still 204.5MB. Free memory was 168.0MB in the beginning and 167.0MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-18 15:51:45,238 INFO L158 Benchmark]: RCFGBuilder took 140.71ms. Allocated memory is still 204.5MB. Free memory was 167.0MB in the beginning and 158.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-18 15:51:45,238 INFO L158 Benchmark]: TraceAbstraction took 3374.95ms. Allocated memory was 204.5MB in the beginning and 245.4MB in the end (delta: 40.9MB). Free memory was 157.9MB in the beginning and 206.6MB in the end (delta: -48.7MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-18 15:51:45,239 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 0.10ms. Allocated memory is still 204.5MB. Free memory was 170.6MB in the beginning and 170.5MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 16.90ms. Allocated memory is still 204.5MB. Free memory was 169.5MB in the beginning and 168.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 9.84ms. Allocated memory is still 204.5MB. Free memory was 168.0MB in the beginning and 167.0MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 140.71ms. Allocated memory is still 204.5MB. Free memory was 167.0MB in the beginning and 158.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 3374.95ms. Allocated memory was 204.5MB in the beginning and 245.4MB in the end (delta: 40.9MB). Free memory was 157.9MB in the beginning and 206.6MB in the end (delta: -48.7MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 22]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 39 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 3.3s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 652 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 652 mSDsluCounter, 1007 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 941 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 727 IncrementalHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 241 mSDtfsCounter, 727 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 284 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=365occurred in iteration=5, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 181 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 268 NumberOfCodeBlocks, 260 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 338 ConstructedInterpolants, 0 QuantifiedInterpolants, 760 SizeOfPredicates, 18 NumberOfNonLiveVariables, 210 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 14 InterpolantComputations, 3 PerfectInterpolantSequences, 164/178 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-02-18 15:51:45,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...