/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 23:54:06,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 23:54:06,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 23:54:06,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 23:54:06,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 23:54:06,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 23:54:06,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 23:54:06,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 23:54:06,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 23:54:06,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 23:54:06,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 23:54:06,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 23:54:06,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 23:54:06,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 23:54:06,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 23:54:06,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 23:54:06,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 23:54:06,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 23:54:06,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 23:54:06,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 23:54:06,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 23:54:06,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 23:54:06,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 23:54:06,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 23:54:06,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 23:54:06,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 23:54:06,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 23:54:06,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 23:54:06,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 23:54:06,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 23:54:06,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 23:54:06,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 23:54:06,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 23:54:06,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 23:54:06,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 23:54:06,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 23:54:06,766 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-VariableLbe.epf [2023-01-27 23:54:06,792 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 23:54:06,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 23:54:06,793 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 23:54:06,793 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 23:54:06,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 23:54:06,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 23:54:06,794 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 23:54:06,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 23:54:06,795 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 23:54:06,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 23:54:06,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 23:54:06,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 23:54:06,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 23:54:06,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 23:54:06,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 23:54:06,796 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 23:54:06,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 23:54:06,796 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 23:54:06,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 23:54:06,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 23:54:06,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 23:54:06,797 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 23:54:06,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 23:54:06,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:54:06,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 23:54:06,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 23:54:06,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 23:54:06,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 23:54:06,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 23:54:06,797 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 23:54:06,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 23:54:06,798 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-27 23:54:06,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 23:54:06,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 23:54:06,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 23:54:06,986 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 23:54:06,987 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 23:54:06,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2023-01-27 23:54:08,107 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 23:54:08,301 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 23:54:08,302 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2023-01-27 23:54:08,310 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c1b68447/182ea78743274ee7b01a3adf1e7ef29c/FLAG8dd795577 [2023-01-27 23:54:08,322 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c1b68447/182ea78743274ee7b01a3adf1e7ef29c [2023-01-27 23:54:08,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 23:54:08,325 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 23:54:08,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 23:54:08,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 23:54:08,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 23:54:08,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:54:08" (1/1) ... [2023-01-27 23:54:08,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4da77a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:08, skipping insertion in model container [2023-01-27 23:54:08,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:54:08" (1/1) ... [2023-01-27 23:54:08,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 23:54:08,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 23:54:08,527 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-01-27 23:54:08,619 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2023-01-27 23:54:08,625 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2023-01-27 23:54:08,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:54:08,637 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 23:54:08,649 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-01-27 23:54:08,667 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2023-01-27 23:54:08,669 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2023-01-27 23:54:08,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:54:08,693 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 23:54:08,693 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 23:54:08,694 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 23:54:08,699 INFO L208 MainTranslator]: Completed translation [2023-01-27 23:54:08,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:08 WrapperNode [2023-01-27 23:54:08,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 23:54:08,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 23:54:08,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 23:54:08,701 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 23:54:08,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:08" (1/1) ... [2023-01-27 23:54:08,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:08" (1/1) ... [2023-01-27 23:54:08,731 INFO L138 Inliner]: procedures = 172, calls = 60, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2023-01-27 23:54:08,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 23:54:08,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 23:54:08,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 23:54:08,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 23:54:08,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:08" (1/1) ... [2023-01-27 23:54:08,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:08" (1/1) ... [2023-01-27 23:54:08,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:08" (1/1) ... [2023-01-27 23:54:08,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:08" (1/1) ... [2023-01-27 23:54:08,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:08" (1/1) ... [2023-01-27 23:54:08,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:08" (1/1) ... [2023-01-27 23:54:08,750 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:08" (1/1) ... [2023-01-27 23:54:08,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:08" (1/1) ... [2023-01-27 23:54:08,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 23:54:08,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 23:54:08,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 23:54:08,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 23:54:08,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:08" (1/1) ... [2023-01-27 23:54:08,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:54:08,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:54:08,782 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) [2023-01-27 23:54:08,789 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 [2023-01-27 23:54:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 23:54:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-01-27 23:54:08,817 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-01-27 23:54:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-01-27 23:54:08,818 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-01-27 23:54:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 23:54:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 23:54:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 23:54:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 23:54:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 23:54:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 23:54:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 23:54:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 23:54:08,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 23:54:08,820 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 23:54:08,917 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 23:54:08,919 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 23:54:09,069 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 23:54:09,074 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 23:54:09,074 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-27 23:54:09,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:54:09 BoogieIcfgContainer [2023-01-27 23:54:09,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 23:54:09,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 23:54:09,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 23:54:09,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 23:54:09,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:54:08" (1/3) ... [2023-01-27 23:54:09,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@434b5201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:54:09, skipping insertion in model container [2023-01-27 23:54:09,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:08" (2/3) ... [2023-01-27 23:54:09,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@434b5201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:54:09, skipping insertion in model container [2023-01-27 23:54:09,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:54:09" (3/3) ... [2023-01-27 23:54:09,094 INFO L112 eAbstractionObserver]: Analyzing ICFG dekker.i [2023-01-27 23:54:09,123 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 23:54:09,123 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-27 23:54:09,123 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 23:54:09,211 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 23:54:09,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 100 transitions, 216 flow [2023-01-27 23:54:09,285 INFO L130 PetriNetUnfolder]: 13/98 cut-off events. [2023-01-27 23:54:09,285 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:54:09,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 98 events. 13/98 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 155 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-01-27 23:54:09,290 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 100 transitions, 216 flow [2023-01-27 23:54:09,294 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 89 transitions, 187 flow [2023-01-27 23:54:09,297 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 23:54:09,303 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 89 transitions, 187 flow [2023-01-27 23:54:09,306 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 89 transitions, 187 flow [2023-01-27 23:54:09,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 89 transitions, 187 flow [2023-01-27 23:54:09,325 INFO L130 PetriNetUnfolder]: 13/89 cut-off events. [2023-01-27 23:54:09,325 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 23:54:09,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 89 events. 13/89 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 155 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-01-27 23:54:09,328 INFO L119 LiptonReduction]: Number of co-enabled transitions 2132 [2023-01-27 23:54:11,150 INFO L134 LiptonReduction]: Checked pairs total: 7839 [2023-01-27 23:54:11,150 INFO L136 LiptonReduction]: Total number of compositions: 62 [2023-01-27 23:54:11,163 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 23:54:11,168 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3b95666c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 23:54:11,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-27 23:54:11,171 INFO L130 PetriNetUnfolder]: 2/16 cut-off events. [2023-01-27 23:54:11,171 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 23:54:11,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:54:11,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-27 23:54:11,172 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 23:54:11,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:54:11,176 INFO L85 PathProgramCache]: Analyzing trace with hash -966251382, now seen corresponding path program 1 times [2023-01-27 23:54:11,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:54:11,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701323522] [2023-01-27 23:54:11,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:54:11,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:54:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:54:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:54:11,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:54:11,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701323522] [2023-01-27 23:54:11,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701323522] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:54:11,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:54:11,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:54:11,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842637350] [2023-01-27 23:54:11,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:54:11,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:54:11,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:54:11,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:54:11,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:54:11,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 162 [2023-01-27 23:54:11,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2023-01-27 23:54:11,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:54:11,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 162 [2023-01-27 23:54:11,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:54:11,548 INFO L130 PetriNetUnfolder]: 474/865 cut-off events. [2023-01-27 23:54:11,548 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-01-27 23:54:11,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 865 events. 474/865 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4520 event pairs, 160 based on Foata normal form. 44/638 useless extension candidates. Maximal degree in co-relation 1499. Up to 420 conditions per place. [2023-01-27 23:54:11,558 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 38 selfloop transitions, 3 changer transitions 2/54 dead transitions. [2023-01-27 23:54:11,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 54 transitions, 206 flow [2023-01-27 23:54:11,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:54:11,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:54:11,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2023-01-27 23:54:11,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6069958847736625 [2023-01-27 23:54:11,575 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2023-01-27 23:54:11,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2023-01-27 23:54:11,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:54:11,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2023-01-27 23:54:11,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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) [2023-01-27 23:54:11,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 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) [2023-01-27 23:54:11,591 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 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) [2023-01-27 23:54:11,592 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 91 flow. Second operand 3 states and 295 transitions. [2023-01-27 23:54:11,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 54 transitions, 206 flow [2023-01-27 23:54:11,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 199 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 23:54:11,599 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 104 flow [2023-01-27 23:54:11,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2023-01-27 23:54:11,604 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-01-27 23:54:11,604 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 104 flow [2023-01-27 23:54:11,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2023-01-27 23:54:11,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:54:11,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:54:11,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 23:54:11,606 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 23:54:11,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:54:11,608 INFO L85 PathProgramCache]: Analyzing trace with hash 486242857, now seen corresponding path program 1 times [2023-01-27 23:54:11,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:54:11,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561523479] [2023-01-27 23:54:11,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:54:11,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:54:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:54:11,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:54:11,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:54:11,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561523479] [2023-01-27 23:54:11,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561523479] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:54:11,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:54:11,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:54:11,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087053760] [2023-01-27 23:54:11,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:54:11,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:54:11,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:54:11,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:54:11,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:54:11,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 162 [2023-01-27 23:54:11,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 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) [2023-01-27 23:54:11,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:54:11,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 162 [2023-01-27 23:54:11,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:54:11,835 INFO L130 PetriNetUnfolder]: 380/711 cut-off events. [2023-01-27 23:54:11,835 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-01-27 23:54:11,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1458 conditions, 711 events. 380/711 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3616 event pairs, 160 based on Foata normal form. 32/600 useless extension candidates. Maximal degree in co-relation 762. Up to 413 conditions per place. [2023-01-27 23:54:11,839 INFO L137 encePairwiseOnDemand]: 157/162 looper letters, 32 selfloop transitions, 2 changer transitions 6/51 dead transitions. [2023-01-27 23:54:11,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 51 transitions, 207 flow [2023-01-27 23:54:11,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:54:11,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:54:11,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2023-01-27 23:54:11,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5946502057613169 [2023-01-27 23:54:11,843 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2023-01-27 23:54:11,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2023-01-27 23:54:11,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:54:11,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2023-01-27 23:54:11,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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) [2023-01-27 23:54:11,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 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) [2023-01-27 23:54:11,848 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 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) [2023-01-27 23:54:11,849 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 104 flow. Second operand 3 states and 289 transitions. [2023-01-27 23:54:11,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 51 transitions, 207 flow [2023-01-27 23:54:11,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 51 transitions, 201 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 23:54:11,852 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 102 flow [2023-01-27 23:54:11,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2023-01-27 23:54:11,853 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2023-01-27 23:54:11,853 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 102 flow [2023-01-27 23:54:11,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 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) [2023-01-27 23:54:11,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:54:11,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:54:11,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 23:54:11,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 23:54:11,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:54:11,859 INFO L85 PathProgramCache]: Analyzing trace with hash 991506848, now seen corresponding path program 1 times [2023-01-27 23:54:11,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:54:11,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298303548] [2023-01-27 23:54:11,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:54:11,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:54:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:54:11,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:54:11,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:54:11,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298303548] [2023-01-27 23:54:11,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298303548] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:54:11,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:54:11,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 23:54:11,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465477036] [2023-01-27 23:54:11,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:54:11,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 23:54:11,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:54:11,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 23:54:11,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 23:54:11,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-01-27 23:54:11,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 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) [2023-01-27 23:54:11,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:54:11,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-01-27 23:54:11,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:54:12,150 INFO L130 PetriNetUnfolder]: 542/945 cut-off events. [2023-01-27 23:54:12,151 INFO L131 PetriNetUnfolder]: For 251/251 co-relation queries the response was YES. [2023-01-27 23:54:12,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1922 conditions, 945 events. 542/945 cut-off events. For 251/251 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4655 event pairs, 128 based on Foata normal form. 18/781 useless extension candidates. Maximal degree in co-relation 1401. Up to 319 conditions per place. [2023-01-27 23:54:12,155 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 49 selfloop transitions, 9 changer transitions 5/73 dead transitions. [2023-01-27 23:54:12,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 73 transitions, 310 flow [2023-01-27 23:54:12,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:54:12,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:54:12,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 464 transitions. [2023-01-27 23:54:12,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5728395061728395 [2023-01-27 23:54:12,157 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 464 transitions. [2023-01-27 23:54:12,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 464 transitions. [2023-01-27 23:54:12,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:54:12,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 464 transitions. [2023-01-27 23:54:12,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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) [2023-01-27 23:54:12,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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) [2023-01-27 23:54:12,161 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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) [2023-01-27 23:54:12,161 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 102 flow. Second operand 5 states and 464 transitions. [2023-01-27 23:54:12,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 73 transitions, 310 flow [2023-01-27 23:54:12,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 73 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:54:12,165 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 151 flow [2023-01-27 23:54:12,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-01-27 23:54:12,166 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2023-01-27 23:54:12,166 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 151 flow [2023-01-27 23:54:12,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 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) [2023-01-27 23:54:12,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:54:12,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:54:12,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 23:54:12,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 23:54:12,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:54:12,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1296093578, now seen corresponding path program 2 times [2023-01-27 23:54:12,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:54:12,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569660146] [2023-01-27 23:54:12,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:54:12,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:54:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:54:12,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:54:12,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:54:12,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569660146] [2023-01-27 23:54:12,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569660146] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:54:12,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:54:12,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 23:54:12,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112858633] [2023-01-27 23:54:12,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:54:12,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 23:54:12,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:54:12,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 23:54:12,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 23:54:12,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-01-27 23:54:12,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 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) [2023-01-27 23:54:12,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:54:12,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-01-27 23:54:12,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:54:12,405 INFO L130 PetriNetUnfolder]: 696/1151 cut-off events. [2023-01-27 23:54:12,406 INFO L131 PetriNetUnfolder]: For 655/659 co-relation queries the response was YES. [2023-01-27 23:54:12,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2643 conditions, 1151 events. 696/1151 cut-off events. For 655/659 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5401 event pairs, 117 based on Foata normal form. 28/1023 useless extension candidates. Maximal degree in co-relation 1906. Up to 327 conditions per place. [2023-01-27 23:54:12,409 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 0 selfloop transitions, 0 changer transitions 81/81 dead transitions. [2023-01-27 23:54:12,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 81 transitions, 415 flow [2023-01-27 23:54:12,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:54:12,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:54:12,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 461 transitions. [2023-01-27 23:54:12,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5691358024691358 [2023-01-27 23:54:12,418 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 461 transitions. [2023-01-27 23:54:12,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 461 transitions. [2023-01-27 23:54:12,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:54:12,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 461 transitions. [2023-01-27 23:54:12,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 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) [2023-01-27 23:54:12,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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) [2023-01-27 23:54:12,422 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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) [2023-01-27 23:54:12,422 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 151 flow. Second operand 5 states and 461 transitions. [2023-01-27 23:54:12,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 81 transitions, 415 flow [2023-01-27 23:54:12,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 81 transitions, 411 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-01-27 23:54:12,429 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2023-01-27 23:54:12,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2023-01-27 23:54:12,431 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2023-01-27 23:54:12,432 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2023-01-27 23:54:12,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 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) [2023-01-27 23:54:12,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-01-27 23:54:12,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-01-27 23:54:12,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-01-27 23:54:12,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-01-27 23:54:12,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-01-27 23:54:12,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-01-27 23:54:12,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 23:54:12,439 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-01-27 23:54:12,444 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 23:54:12,444 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 23:54:12,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 11:54:12 BasicIcfg [2023-01-27 23:54:12,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 23:54:12,452 INFO L158 Benchmark]: Toolchain (without parser) took 4126.89ms. Allocated memory was 343.9MB in the beginning and 413.1MB in the end (delta: 69.2MB). Free memory was 301.7MB in the beginning and 274.1MB in the end (delta: 27.7MB). Peak memory consumption was 98.1MB. Max. memory is 16.0GB. [2023-01-27 23:54:12,453 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 23:54:12,453 INFO L158 Benchmark]: CACSL2BoogieTranslator took 374.08ms. Allocated memory is still 343.9MB. Free memory was 301.7MB in the beginning and 281.4MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-27 23:54:12,454 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.02ms. Allocated memory is still 343.9MB. Free memory was 281.4MB in the beginning and 279.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:54:12,456 INFO L158 Benchmark]: Boogie Preprocessor took 20.87ms. Allocated memory is still 343.9MB. Free memory was 279.5MB in the beginning and 278.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 23:54:12,457 INFO L158 Benchmark]: RCFGBuilder took 333.55ms. Allocated memory is still 343.9MB. Free memory was 277.7MB in the beginning and 263.8MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-27 23:54:12,461 INFO L158 Benchmark]: TraceAbstraction took 3362.32ms. Allocated memory was 343.9MB in the beginning and 413.1MB in the end (delta: 69.2MB). Free memory was 263.1MB in the beginning and 274.1MB in the end (delta: -11.0MB). Peak memory consumption was 60.3MB. Max. memory is 16.0GB. [2023-01-27 23:54:12,463 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 374.08ms. Allocated memory is still 343.9MB. Free memory was 301.7MB in the beginning and 281.4MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 31.02ms. Allocated memory is still 343.9MB. Free memory was 281.4MB in the beginning and 279.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.87ms. Allocated memory is still 343.9MB. Free memory was 279.5MB in the beginning and 278.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 333.55ms. Allocated memory is still 343.9MB. Free memory was 277.7MB in the beginning and 263.8MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3362.32ms. Allocated memory was 343.9MB in the beginning and 413.1MB in the end (delta: 69.2MB). Free memory was 263.1MB in the beginning and 274.1MB in the end (delta: -11.0MB). Peak memory consumption was 60.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 83 PlacesBefore, 40 PlacesAfterwards, 89 TransitionsBefore, 41 TransitionsAfterwards, 2132 CoEnabledTransitionPairs, 6 FixpointIterations, 22 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 11 ConcurrentYvCompositions, 5 ChoiceCompositions, 62 TotalNumberOfCompositions, 7839 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3488, independent: 3189, independent conditional: 0, independent unconditional: 3189, dependent: 299, dependent conditional: 0, dependent unconditional: 299, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1087, independent: 1050, independent conditional: 0, independent unconditional: 1050, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3488, independent: 2139, independent conditional: 0, independent unconditional: 2139, dependent: 262, dependent conditional: 0, dependent unconditional: 262, unknown: 1087, unknown conditional: 0, unknown unconditional: 1087] , Statistics on independence cache: Total cache size (in pairs): 238, Positive cache size: 211, Positive conditional cache size: 0, Positive unconditional cache size: 211, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 780]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 739]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 132 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 101 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 101 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 337 IncrementalHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 13 mSDtfsCounter, 337 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=151occurred in iteration=3, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 58 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 23:54:12,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...